ST V9212
Video Processor for CRT Monitors with PictureBooSTTM
Main Features
s General
q q q q
I²C-Bus Controlled Supports AC- and DC-coupled applications 5V to 8V Power Supply Matches to virtually any video amplifier DIP24S:(Plastic Package) ORDER CODE: STV9212 PictureBooSTTM insertion input Full-screen PictureBooSTTM via I²C-bus Context-sensitive Picture Enhancement Input and Output Video Clamp Sync Pulse Polarity Auto-rectification Clamp Pulse Generation timed either by sync or video blanking pulse Contrast Adjustment with excellent channel matching Gain stages for control of white Two DC-mode cut-off ranges Output DC offset control Automatic Beam Limiter (ABL) Video Insertion Pulse (VIP), 2 levels Amplifier Control (Blanking and Stand-by)
s PictureBooSTTM
q q q
s Video Clamping
q q q
General Description
The STV9212 is an I²C-bus controlled color video processor designed for standard CRT monitor applications. It can drive systems where cathodes are either AC- or DC-coupled to the amplifier outputs. The three video channels provide contrast and white balance separate gain adjustments as well as one-per-channel DC cut-off control and common DC offset control functions. On top of these usual controls, it features context-sensitive picture enhancement circuitry to support the PictureBooSTTM function that enhances the appearance of still pictures and moving video. In AC coupling applications, the device can pilot three cathode DC restore channels dedicated to set CRT cut-off bias voltages and to control brightness through cathodes. The RGB video outputs have a class A architecture and directly drive the amplifier channels without unnecessarily consuming current. Bandwidth limitation I²C-bus adjustments can contribute to keeping the application EMI under control. OSD (On-Screen Display) graphics are inserted by means of a Fast Blanking signal. Independent OSD contrast control facilitates adaptation to various OSD generators and provides system flexibility. The STV9212 is perfectly compatible with other ST components for CRT video boards, such as video amplifiers and OSD generators.
s Video Processing
q
q q q q q q
s OSD Insertion with Contrast Control s Control Output
q q
Amplifier Standby and Blanking Control 3 DAC for control of DC Restore Amplifier or Brightness in DC-coupled system
October 2003
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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STV9212
Table of Contents
Chapter 1
1.1 1.2
STV9212 Pin Allocation and Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Pinout . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 4 Pin Descriptions . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ..... 4
Chapter 2
2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Video RGB Input Clamp . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .... 6 Video Blanking . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ... 8 Contrast Control Stage and Automatic Beam Limiter . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .... 9 PictureBooST . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ... 10 OSD Insertion . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ... 11 Drive Stage . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 11 Video Insertion Pulse . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 12 Output Stage . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .... 12 Output Infra-black Level, Cut-off and Brightness . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .... 15 Signal Waveforms . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 18 Miscellaneous . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 18
Chapter 3
3.1
I²C-Bus Interface Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
I²C-bus Register Descriptions . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ... 21
Chapter 4
4.1 4.2 4.3 4.4 4.5 4.6
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Absolute Maximum Ratings . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 24 Thermal Data . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ... 24 Static Electrical Characteristics . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 24 Dynamic Electrical Characteristics . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 25 I²C-Bus Electrical Characteristics . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . ... 27 I²C-Bus Interface Timing Requirements . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 27
Chapter 5 Chapter 6 Chapter 7
Soldering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Package Mechanical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Input/Output Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
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STV9212 Chapter 8 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
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STV9212 Pin Allocation and Description
STV9212
1
1.1
STV9212 Pin Allocation and Description
Pinout
Figure 1: STV9212 Pinout
IN1 HS IN2 ABL IN3 GNDA VCCA PB OSD1 OSD2 OSD3 FBLK
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
BLK AMPCTL OUT1 VCCP OUT2 GNDP OUT3 CO1 CO2 CO3 SDA SCL
1.2
Pin
1 2 3 4 5 6 7 8 9 10 11 12
Pin Descriptions
Table 1: STV9212 Pin Descriptions N am e
IN1 HS IN2 ABL IN3 GN D A VCCA PB OS D 1 OS D 2 OS D 3 FBLK
Function
Video Input, Channel 1 Video Clamp Sync Input Video Input, Channel 2 Automatic Beam Limiter Input Video Input, Channel 3 Analog Ground Analog Supply Picture Boost Input OSD Input, Channel 1 OSD Input, Channel 2 OSD Input, Channel 3 OSD Insertion Control Input
Pin
13 14 15 16 17 18 19 20 21 22 23 24
N am e
SCL SDA C O3 C O2 C O1 OU T 3 G NDP OU T 2 VCCP OU T 1 A MP C T L BLK
Function
I²C-bus Clock Input I²C-bus Data Input/Output Cut-off / Brightness DAC 3 Output Cut-off DAC 2 Output Cut-off DAC 1 Output Video Output, Channel 3 Output Stage Ground Video Output, Channel 2 Output Stage Supply Video Output, Channel 1 Output for Amplifier Control Blanking and Video Clamp Sync Input
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2
STV9212
HS VCCA VCCP 21 7
BLK
FBLK
PB
2
24
12
8
ICP, OCP BLKI PreAmplifier Stand-by OCP Amplifier DC or AC VOUT1 + + + Drive Output Stage 22 GV EH T BLKI FBLK 17 DCIN1 ST DB/ BLK GNDP GND VIP level OSD I²C Infra-black level cut-off Brightness 19 CO1 GDC DCOUT1 OUT 1 I²C 3V (DC)
OCP BLKI
PictureBooST
ICP
IN1 1
Clamp
Vref
Contrast
Fu n c t i o n al Description
ICP
I²C
C hannel 1
20 OUT 2
IN2 3
C hannel 2
16 CO2 18 OUT 3
IN3 5
Figure 2: STV9212 Block Diagram
C hannel 3
BLKI VCCP
15 CO3
The functional blocks are described in the order they act on the signal.
ABL 4
I²C-bus Decoder OSD Contrast 9 OSD1 OSD2 10 11 OSD3 6
Standby & Blanking I²C
23
AMPCTL
STV9212
14
13
SDA
SCL
GNDA
Functional Description
I²C-bus control path
video/control signal path
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Functional Description
STV9212
2.1
Video RGB Input Clamp
The three RGB inputs have to be supplied with a video signal through coupling capacitors playing the role of analog memories for internal video clamps. The input clamping level is approximately 0V. The clamp is gated by the Input Clamp Pulse (ICP) that is internally generated from a signal on either the HS or BLK pin. The selection is done via register 8 of the I²C-bus. For more information, refer to Figure 3: ICP, OCP and BLKI Generation and Table 2: ICP Timing. Provided with an automatic polarity rectification function, the HS input accepts horizontal synchronization signals of either polarity. The device can select either the leading or trailing edge of this signal to trigger the ICP generator. The BLK input is followed by an inverter stage that can be enabled or by-passed via the I²C-bus. This allows the use of a signal of either polarity, the control software taking care of the inverter position according to the signal applied. The BLKI signal found behind this inverter stage also drives the video blanking circuitry which requires a positive BLKI polarity for correct operation. Once bit BLKPOL has correctly been uploaded to ensure a positive BLKI polarity, the ICP triggering edge can be selected via control bit BCEDGE. A horizontal flyback pulse is generally expected to be applied on the BLK input. As the edges of horizontal flyback pulse can fall into the active video content (outside the video signal line blanking portion), the application must ensure that such an edge is never selected for triggering the ICP. The width of the internally generated ICP is controlled via the I²C-bus. The HS input can be used to pass a clamping pulse, if available in the application, directly to clamping stages, without any additional processing. In this case, the appropriate polarity (positive) is required. See Table 2: ICP Timing. The ICP timings triggered by the trailing edge of the BLK signal are not presented. The Output Clamp Pulse (OCP) is described in Section 2.8: Output Stage.
Figure 3: ICP, OCP and BLKI Generation
BCSC0
(Sad08/b0)
BCEDGE
(Sad08/b1)
ICP width BCWDTH
(S ad08/b2,b3)
ICP trig/pulse mode BCSC1
(Sad08/b4)
0 HS 2 Autom atic Polarity 1
-1
0 Pulse Generation on
0
ICP (Internal)
1
1
-1
1 BLKI 0 Pulse G eneration on
1
OCP (Internal)
BLK
24
0
BLKPOL
(Sad09/b0)
OCPSC
(S ad08/b7)
Video blanking
BLKI (Internal)
I²C-bus field Note: The I²C-bus switches are displayed in their default positions
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STV9212
Table 2: ICP Timing Trigger Source Trigger Event
BCS C1 BCSC0 BCEDGE BLKPOL
Functional Description
Timing Diagram
HS Trailing edge 0 0 0 Don't care ICP
negative or positive
0.33s...1.33s
HS pin
HS Leading edge 0 0 1 Don't care ICP
negative or positive
0.33s...1.33s
HS Pulse 1 Don't care Don't care Don't care I CP
(must be positive!)
0 Rising edge BLK 0 Falling edge 0 1 1 0 1 1
0
BLK ICP
1
0.33s...1.33s
1
BLK ICP
0
0.33s...1.33s
Figure 4: Video Input Clamp
VRef = Internal reference voltage (fixed) Input video I N1 0V DC signal from graphics card (can vary) 1 VRef 0V High Impedance stage To further processing
ICP
0V clamped to GND
N ote: Identical for IN2 and IN3 inputs
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Functional Description
STV9212
2.2
Video Blanking
The three video channels are simultaneously blanked with the high level of either BLKI or FBLK signals. BLKI is an internal signal drawn from the signal applied on the BLK pin (H-flyback) as shown in Figure 3. The blanking consists in forcing a "black" level to the internal clamped video signal.
BLK Input
The BLK input receives an H-flyback pulse that drives:
q q
the video blanking circuitry during scan line retrace, the output clamping stage.
A clipping circuit at the input allows the direct use of a high-voltage H-flyback pulse applied through a serial resistor as shown in Figure 5. A logic-level signal is also accepted but the serial resistor remains mandatory. In all cases, the value of this resistor must be such that the sinking and sourcing currents are limited to 1mA and 100A, respectively.
Figure 5: BLK Input Pin
Typical H-Flyback signal 40 to 100V GND 0 to -10V
Rlim (*) BLK 24 Signal at BLK pin (Pin 24)
~3V GND
(*) Rlim is necessary to limit currents flowing through BLK pin (-100uA, +1mA max.)
Permanent Blanking
The entire TV screen can be blanked for an unlimited amount of time using the software blanking feature. Both bits SWBLK and TST1 must be set to 1. The three video outputs are forced to their infra-black levels as shown in Figure 6. Infra-black levels are defined in Section 2.9.
Figure 6: Software Blanking
Normal operation SWBLK=0, TST1=0 Softw are blanking in operation SWBLK=1, TST1=1
Video output channels 1,2,3
Black level
Infra-black level
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STV9212
Functional Description
The screen can also be blanked by permanently keeping the On-Screen Display FBLK input signal at high level. In this case, only the video contents of the three video channels are replaced by "black level" OSD content insertion (signals on pins OSD1 through OSD3 permanently at low level). Refer to Section 2.5: OSD Insertion on page 11.
2.3
Contrast Control Stage and Automatic Beam Limiter
The contrast stages are simultaneously controlled on all three RGB channels with high attenuation matching precision. Refer to electrical specifications for values. See Figure 7: C ontrast Control and Table 4: I²C-Bus Register Map.
Figure 7: Contrast Control
Before contrast stage
Video Black Level
VRef
C RST=max
After contrast stage
C RST=mid C RST=min Note: CRST I²C-bus field acts equally on all 3 video channels
Video Black Level
VRef
The Automatic Beam Limiter (ABL) is an attenuator controlled through the ABL input, independent of contrast stage attenuation. The operating range is about 2 V (from 3 V to 1 V). A typical characteristic is shown in Figure 8. Refer to Section 4: Electrical Specifications for specific values. When not used, the ABL pin is to be connected to VCCA.
Figure 8: ABL Characteristics
Attenuation (dB) 0 -2 -4 -6 -8 - 10 -12 -14 -16 0 1
2
3
4
5 VABL (V)
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Functional Description
STV9212
2.4
PictureBooST
The PictureBooSTTM function provides a picture enhancement effect for images with photographic or moving video contents. The function is activated whenever the level on pin PB is high (TTL) or the bit PBINS is at 1, if the general PictureBooSTTM enable bit PBGEN is at 1. By means of PB input signal toggling, the function can take effect in a part of the screen, e.g. a window, or on the whole screen. The picture enhancement is achieved through combination of three actions, as shown in Figure 9:
q q q
a content-sensitive peaking with slow restore (vivacity), a contrast addition, a brightness addition.
The vivacity amplitude depends on the slope height and steepness and on the status of bits PBVIVAM[1:0]. The return to stabilized state is exponential with a time constant adjustable via bits PBVIVTC[2:0]. Any undershoot below the video black level is clipped to a level close to black. The PictureBooSTTM brightness is a DC offset superimposed on the video signal in the boosted zone. Its value is selected by bits PBBRIG[1:0]. The vivacity and PictureBooSTTM brightness are both enabled by bit PBVIVEN. The PictureBooSTTM contrast component evenly increases the video amplitude in the boosted zone. Its value is controlled by bits PBCRST[1:0]. Refer to Section 4: Electrical Specifications for values.
Figure 9: PictureBooST Action
H-sync
Video before PictureBooSTTM stage
A
PB input
Vviv
viv
Video after PictureBooSTTM stage
PB contrast
A
PB brightness
clipping
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STV9212
Functional Description
2.5
OSD Insertion
The On-Screen Display (OSD) is inserted with a high level on the FBLK input (TTL). The device acts as follows:
q
The three RGB video input signals (IN1, IN2, IN3) are internally blanked, i.e. put at the black level. Binary levels (TTL) on inputs OSD1, OSD2 and OSD3, after processing in the OSD contrast stage, are added to the corresponding blanked video channels.
q
In this way, the OSD contents replace the video contents where the FBLK input is high. See Figure 2 and Figure 10. The OSD is inserted after the PictureBooSTTM block and before the Drive block. As a consequence, OSD insertion overlaps all video contents, including the PictureBooSTTM-ed zones. Color temperature adjustments by means of the I²C-bus Drive registers act in the OSD insets. The OSD contrast stage allows the adjustment of the level of OSD insets simultaneously on the three OSD channels and independently of the video contrast adjustment. Refer to Section 4: Electrical Specifications for values.
Figure 10: OSD Insertion
Video before OSD insertion
Video Black Level
VRef
OSD Signals
FBLK OSD1(2,3) max
mid Video after OSD insertion V OSD
Video Black Level
min.
VRef
OSDCRST
Note: The OSDCRST I²C-bus field acts equally on all 3 OSD channels.
2.6
Drive Stage
The Drive stage is a set of three attenuators separately controlled via three I²C-bus registers, DRIVE1, DRIVE2 and DRIVE3. It affects all signals, ordinary video, PictureBooSTTM processed video and OSD insets. It is designed to compensate for differences in gain of the three CRT cathodes. See Figure 11 and for values, refer to Section 4: Electrical Specifications.
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Functional Description
STV9212
Figure 11: Drive Control
Before D rive Stage
Video Black Level
VRef
DRIVEx=m ax
After Drive Stage
One I²C-bus register DRIVEx (x=1, 2 or 3) per video channel
DRIVEx=m id DRIVEx=m in
Video Black Level
VRef
2.7
Video Insertion Pulse
The Video Insertion Pulse (VIP) creates an indent on the three video signals, timed with the positive part of the BLKI signal. (See Section 2.2: Video Blanking on page 8). As its level is below the video black level, it introduces a video "infra-black" level. The video infra-black level position versus ground is then controlled in subsequent stages. In the absence of the blanking pulse on pin BLK, the VIP is not inserted and the subsequent stages control the position of video black level. Figure 12 shows the signal before and after insertion of the VIP. Two different VIP values are programmable by bit VIP. Refer to Section 4: Electrical Specifications for values.
Figure 12: VIP Insertion
Video before VIP insertion BLKI signal
Video Black Level
VRef
Video after VIP insertion
Video Black Level VVIP Video Infra-black Level
VRef+VVIP VRef
Note: Identical for video channels 1, 2 and 3.
2.8
Output Stage
The output stage consists of an output clamp and a buffer. If a reduced output video amplitude and/ or a reduced infra-black level range is sufficient in the application, the VCCP can be lowered to 5V.
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STV9212
Functional Description
Even at 8V of VCCP, care must be taken at device application level to ensure operation without signal top limitation.
2.8.1
Output Clamp
The DC position of video infra-black and video black levels at the video outputs must be fixed regardless of video or OSD inset contents, especially in applications where the device's output infra-black level determines directly the infra-black level on the CRT cathodes (DC-coupled applications). This fixing is achieved by means of a fully-integrated output clamp that brings the output video infra-black level (video black level, in absence of the BLK pulse) to the level of a variable reference (Vib) as shown in Figure 13. The Vib is described in detail in Section 2.9 on page 15. The clamp circuit is driven by the Output Clamp Pulse (OCP). For correct operation, this pulse must entirely fall into the VIP pulse if this is present (clamp of infra-black level) or onto the video black part (clamp of black level). In the former case, the OCP generator is to be triggered with the leading edge of the BLK pulse, in the latter case it must copy the ICP pulse. Refer to Figure 3 for the OCP generation block diagram. Table 3 shows possible OCP timings. Although possible, the OCP timings, triggered by the BLK trailing edge, are not shown as they have no practical use.
2.8.2
Bandwidth Control
Controlled via bits BW[3:0], the output stage can limit the rise and fall time of the output signal. The optimum choice for this adjustment is highly application dependent. Refer to Section 4: Electrical Specifications for values and to Section 6: Application Hints for practical advice.
2.8.3
Output Buffer
The output buffer provides enough current so that external buffers are not required and the power amplifier can interface directly to the device's outputs.
Figure 13: Output Stage
OCP
15 VCCP
BLKI OCP Video before output stage
22 OUT1
VRef GND Clamp & Buffer
+
Vib
Vib
Output Infra-black Level
Note: Identical for video channels 2 and 3.
13/34
Functional Description
Table 3: OCP Timing Source Trigger Event
STV9212
OCPSC
B LKPOL
Timing Diagram
I CP I CP Pulse 1 Don't care O CP
Rising edge BLK Falling edge 0
BLK 0 O CP
BLK 1 OCP
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STV9212
Functional Description
2.9
Output Infra-black Level, Cut-off and Brightness
The schematic diagram of these functions is shown in Figure 14.
Figure 14: Cut-off and Brightness Control Block Diagram
I²C-bus field
VRef Vib Output stage Vib Vibmin ViblDC 1 per channel
range DC:0
OUT1 OUT2 OUT3
1 for 3 channels
I B OF
Video DC level
DC VCOmax
IBLRG MOD
AC:1
MOD= 1 MOD= 0
IBL3 IBL2 IBL1
Cut-off Cut-off Cut-off
range
ViblAC ViblAC
AC:1
~40k
VCO CO1 CO 2 CO 3
VbriDC ~0V* VbriAC VCOmin
BRIGRG
1 for 3 channels
range
VbriAC
DC:0
VCO VbriDC VCOmin DC
BRI G
Brightness Channel 3 Only
GND
C h 3 Ch 1 Ch2
Note: Identical for CO1, CO2 and CO3 outputs except for "brightness" (VbriDC) that is only output at CO3 while MOD=0. The switches are drawn in their default positions. * ~0V when the output is left open
2.9.1
Output Infra-black Level
The infra-black level of the video signal at the video outputs OUT1, OUT2 and OUT3 is positioned to the Vib reference by the output clamp circuit, thus defining the Output infra-black level. If the output clamp circuit is furnished with a correctly timed OCP (see corresponding sections), the output infra-black level equals Vib. Vib is composed of a fixed DC voltage (Vibmin), a variable DC voltage (Vibof) applied on all three channels and a per-channel variable DC voltage (Vibl (1,2,3)) as shown in Figure 15. In AC-coupling mode (bit MOD = 1), the Vibl part is suppressed and the Vib is therefore equal on all three channels, only varying with bits IBOF[5:0] acting on Vibof. This can be used to match the device's outputs to the input of the video amplifier used (biasing). In DC-coupling mode (bit MOD = 0), Vibl (1,2,3) are separately set via bits IBL1[7:0], IBL2[7:0] and IBL3[7:0], respectively. This serves to adjust the cut-off points of the three CRT cathodes. In this case, Vibof can serve to pre-position the cut-off ranges in the factory adjustment procedure or/and to provide a rough brightness control.
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Functional Description
STV9212
Figure 15: Output Infra-black Level
19
GNDP
22
OUT1
20
OUT2
18
OUT3
black infra-black Vibl(1) Vibl(2) Vibl(3) DC: differential cut-off AC: Vibl(1,2,3) = 0V I²C: IBL1, IBL2, IBL3
Vib (3)
Vibof
Vib(1)
Vibof Vibmin
Vib(2)
Vibof Vibmin
DC: common cut-off/brightness AC: video amp. biasing I²C: IBOF fixed DC
Vibmin
Channel 1
Channel 2
Channel 3
2.9.2
Cut-off and Brightness Control Outputs
Outputs CO1, CO2 and CO3 provide a DC voltage controlled via bits BRIG[7:0], IBLx[7:0], IBLRG[7:0], BRIGRG[1:0] and MOD[7:0]. The principal of operation is shown in Figure 14. When bit MOD is in position AC (= 1), the output voltage is a sum of the "brightness" VbriAC, "cut-off" ViblAC and a fixed VCOmin providing a bottom limitation. The brightness adjustment is equally applied to all three CO1, CO2 and CO3 outputs. It varies depending on bits BRIG[7:0] and BRIGRG[1:0], with bits BRIGRG[1:0] controlling the range of BRIG adjustment. The cut-off adjustment is separate for each channel, having one I²C-bus field per channel: IBL1, IBL2 and IBL3. The ratio between the brightness and cut-off ranges depends on the brightness range selection. See Figure 16.
Figure 16: CO1, CO2 and CO3 Outputs while MOD = 1
19 G NDP
17 CO 1
16 C O2
15 C O3
ViblAC(1) ViblAC(2) VCO(1) VbriAC VCOmin VCO(2) VbriAC VCOmin
ViblAC (3) VCO(3)
cut-off I²C: IBL1, IBL2, IBL3
VbriAC brightness through cathods I²C: BRIG VCOmin fixed DC
Channel 1
Channel 2
Channel 3
When bit MOD is in position DC (= 0), the output voltage on CO3 output is a sum of the "brightness" VbriDC and a fixed VCOmin providing a pedestal. Outputs CO1 and CO2 are floating with internal
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STV9212
Functional Description
resistors of approximately 40 k to ground. The VbriDC varies with bits BRIG[7:0] and does not depend on bits BRIGRG[1:0]. See Figure 17.
Figure 17: CO1, CO2 and CO3 Outputs while MOD = 0
19 G NDP
17 CO1
16 CO2
15 CO3
VCO(3)
VbriDC
brightness through G1 I²C: BRIG
VCOmin
fixed DC
Channel 1
Channel 2
Channel 3
Note: Channels 1 and 2 shown with CO1 and CO2 outputs left open
17/34
Functional Description
STV9212
2.10
Signal Waveforms
Figure 18 gives a summary of main signals waveforms.
Figure 18: Signal Waveforms
Control signals Clam p signals OSD signals
BLKI HS
I CP OC P
Video input IN1 (2,3)
FBLK
O SD input O SD 1 (2,3)
Video output OUT1 (2,3)
Black-level Infra-black level
2.11
Miscellaneous
2.11.1 Stand-by Mode
The device is set in Stand-by mode either by means of bit PASTBY or by lowering the VCCP supply voltage below the VCCPS threshold. Once in Stand-by mode, the device does not process the video signal and its power consumption is significantly reduced. The I²C-bus interface remains operational. A low level is forced on the AMPCTL output. Refer to Section 4: Electrical Specifications for values.
2.11.2 AMPCTL Output
The AMPCTL is designed to control a video power amplifier. It provides a three-level logical signal that depends on bits ASTBY and ABLEN, as well as on the operating mode (stand-by / normal) of the device. Figure 19 gives all possible states of the AMPCTL output. Refer to Section 4: Electrical Specifications for electrical parameter values. Pin AMPCTL is of push-pull type. It must not directly
18/ 34
STV9212
Functional Description
be grounded in the application and it can be left floating. Only video amplifiers provided with an appropriate control input can take advantage of the signal on the AMPCTL output.
Figure 19: AMPCTL Output States
BLKI signal
VAMPHI AMPCTL pin signal VAMPBL VAMPSB GND I²C-bus bits
ASTBY PASTBY ABLEN VCCP
X 1
1 X
0 0 1 >VSTBTH
0 0 0 >VSTBTH
X X X
X X >VSTBTH
Note: X stands for "don't care" value
19/34
I²C-Bus Interface Specifications
STV9212
3
I²C-Bus Interface Specifications
The device is compatible to general I²C-bus specification. Its slave write address is DCh. Subaddress (Sad) auto-incrementing is not available. Only Write mode is supported. The control register map is given in Table 4. Bold weight denotes default values assumed at power-on reset. The power-on reset is effected every time that the supply voltage on VCCA pin drops below VPORTH threshold (Refer to electrical specifications). In order to ensure compatibility with future devices, all "Reserved" bits are to be set to 0 once uploaded by the control software.
Table 4: I²C-Bus Register Map Sad 01 02 03 04 05 06 07 08 b7
1 1 1 1 1 0 0 OCPTG 0:BLK 1:ICP ASTBY 0:Normal 1:Standby 1 1 1 PASTBY 0:Normal 1:Standby VIP 0:0.2V 1:0.4V PBGEN 0:Disable 1:Enable PBVIVEN 0:Disable 1:Enable
b6
0 0 0 0 0 0 Reserved
b5
0 0 0 0 0 0
b4
CRST 0 BRI G
0 DRI VE1 0 DRI VE2 0 DRI VE3 0 R eserved 0
b3
0 0 0 0 0 0
b2
0 0 0 0 0 0
b1
0 0 0 0 0 0
b0
Reserved 0 0 Reserved 0 Reserved 0 Reserved 0 BRIGRG 1 1 BCSC0 0:HS trig 1:BLK trig BLKPOL 0:Non-inv. 1:Inverted 0 0 0
OSDCRST
0 1 0 BCSC1 B C WD T H 0:Trig mode 0 1 1:HS pulse TST2 Reserved MOD 0:DC 0:Test 0 1:AC 1:Normal I BL 1 0 0 0 I BL 2 0 0 0 I BL 3 0 0 0 TST3 0:Normal 1 0 1:Test I B OF 0 0 0 Reserved 1 0 0 BC ED GE 0:Rising 1:Falling S WB L K 0:Disable 1:Enable 0 0 0
09 0A 0B 0C 0D
0 0 TST1 TST0 0:Normal 0:Norm al 1:Test 1:Test ABLEN Reserved 0:Bl. disable 0 1:Bl. enable 0 0 0 Reserved 0 0 0 0 TST4 0:Norm al 1:Test
BW
0 0
0E
1
0
0F
PBINS Reserved 0:PB Pin 0 1:Perman. PBVIVAM
0 1
PBCRST
0 Reserved 0 1
IBLRG 0:Wide 0 1:Narrow PBBRIG
0 1 Reserved 0 0
PBVIVTC
0
10
20/ 34
STV9212
I²C-Bus Interface Specifications
3.1
Sad01
I²C-bus Register Descriptions
Bit 0 = Reserved
Read/Write Reset Value: 1000 0000 (80h)
7
CRST[6:0]
Sad05
0
Read/Write Reset Value: 1000 0000 (80h)
7
DRIVE3[6:0]
Values 00 and 7Fh in field CRST[6:0] are prohibited. Bits[7:1] = Contrast Adjustment (CRST) Bit 0 = Reserved
0
Sad02 Read/Write Reset Value: 1000 0000 (80h)
7
BRIG[7:0]
Values 00 and 7Fh in field DRIVE3[6:0] are prohibited. Bits[7:1] = Gain Adjustment on Channel 3 (DRIVE3) Bit 0 = Reserved.
0
Sad06 Read/Write Reset Value: 0000 0001 (01h)
7 0
B R I GR G [1:0]
Bits[7:0] = Brightness Adjustment (BRIG) In AC mode, this value is added to infrablack levels and output on pins CO1, CO2 and CO3. In DC mode, it is output all alone on pin CO3.
Sad03 Read/Write Reset Value: 1000 0000 (80h)
7
DRIVE1[6:0]
Bits[7:2] = Reserved. Bits[1:0]= Brightness Adjustment Range (BRIGRG) Four positions. See Section 4.4: Dynam ic Electrical Characteristics.
Sad07
0
Read/Write Reset Value: 0000 1001 (09h)
7
OSDCRST[3:0]
Values 00 and 7Fh in field DRIVE1[6:0] are prohibited. Bits[7:1] = Gain Adjustment on Channel 1 (DRIVE1) Bit 0 = Reserved
0
Bits[7:4] = Reserved. Bits[3:0]= OSD Contrast Adjustment
Sad04 Read/Write Reset Value: 1000 0000 (80h)
7
DRIVE2[6:0]
Sad08 Read/Write Reset Value: 0000 0100 (04h)
0 7
O CPT G TST[1:0]
0
BCED BCSC BCSC BCWDTH[1:0] GE 0 1
Values 00 and 7Fh in field DRIVE2[6:0] are prohibited. Bits[7:1] = Gain Adjustment on Channel 2 (DRIVE2)
Bit 7 = Output clamping pulse selection 0: Pulse triggered by BLK input (default) 1: Internal ICP pulse
21/34
I²C-Bus Interface Specifications
Bits[6:5] = Test mode activation for device testing in fabrication. When performing software blanking through SWBLK bit, TST1 bit must be set to 1. 0: Normal operation mode (Default) 1: Test mode Bits[4,0] = Blanking and clamping pulse source.
BCS C1
0 0 1
STV9212
0: Test mode 1: Normal operation mode (Default) Reserved. Application mode selection. 0: Application with DC-coupled cathodes. (Default) 1: Application with AC-coupled cathodes. Permanent blanking of video channels through software. 0: Disable, blanking gated with signal on BLK pin. (Default) 1: Permanent blanking. Bit TST1 must also be set to 1. Blanking signal (H-fly back) polarity inversion. For correct operation, the internal BLKI pulse after this controlled inversion must be positive. 0: Non Inverted, good for positive blanking pulse (Default) 1: Inverted, good for negative blanking pulse
Bit 3 = Bit 2 =
BCS C0
0 1 Don't care
Selected Source
HS pin trigger (Default) BLK pin trigger HS pin pulse
Bit 1 =
Bits[3:2] = Width of ICP pulse when bit BCSC1 is 0.
BCWDT H
0 0 1 1 0 1 0 1
Bit 0 =
BCPC Width
0.33 s 0.66 s (Default) 1 s 1.33 s
Bit 1 = When HS pin is selected to trigger the ICP pulse generator. 0: Trailing edge of HS pulse (Default) 1: Leading edge of HS pulse When BLK pin is selected to trigger the ICP pulse generator:
BCE DG E
0 0 1 1
Sad0A, Sad0B and Sad0C Read/Write Reset Value: 1000 0000 (80h)
7
IBL1[7:0] IBL2[7:0] IBL3[7:0]
BLKPOL
0 1 0 1
Trigger on BLK
Rising edge (default) Falling edge Falling edge Rising edge
0
Refer to BLKPOL bit description.
Sad09 Read/Write Reset Value: 0001 0000 (10h)
7
ASTB ABLE Y N TST2 MO D
Bits[7:0] = Infra-black (Cut-off) Level Control, Channels 1 to 3 (IBLx) In DC-coupling mode, the register controls the pedestal of corresponding video channel signal. In AC-coupling mode, the register controls the level on outputs CO1, CO2 or CO3, respectively.
0
SW BL BLKP K OL
Sad0D Read/Write Reset Value: 0000 1000 (08h)
7
PAST BY TST[4:3] BW[3:0]
Bit 7 = Amplifier standby selection. 0: Normal (default) 1: Standby Bit 6 = Amplifier blanking enable. The bit is "don't care" whenever bit ASTBY is in Standby position. 0: Blanking pulse not generated (default) 1: Blanking pulse generated Bit 5 = Reserved. Bit 4 = Test mode activation for device testing in fabrication.
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0
Bit 7 = Preamplifier and Amplifier STandBY selection 0: Normal (default) 1: Standby Bit 6 = Reserved.
STV9212
Bits[5:4] = Test mode activation bits for device testing in fabrication. 0: Normal operation mode (Default) 1: Test mode Bits[3:0] = Internal band width limitation control. Refer to electrical characteristics.
I²C-Bus Interface Specifications
Bit 7 = PictureBooST General Enable. (PBGEN) 0: Disable, function inhibited (Default) 1: Enable, function active Bit 6 = PictureBooST Insertion Control. (PBINS) 0: PB pin insertion (Default) 1: Permanent insertion regardless of signal on PB pin Bit 5 = Reserved. Bits[4:3] = PictureBooST Contrast Control (PBCRST) Bit 2 = Reserved. Bits[1:0] = PictureBooST Brightness Control (PBBRIG)
Sad0E Read/Write Reset Value: 1100 0001 (C1h)
7
VIP IBOF[5:0]
0
IBLR G
Sad10 Bit 7 = Video Insertion Pulse depth. 0: 0.2V 1: 0.4V (default) Bits[6:1] = Infra-black level offset control simultaneously on all three video channels. Bit 0 = Control range of infra-black level adjustments via IBL1, IBL2 and IBL3 registers. Acts either on video signal channels or CO1, CO2, CO3 outputs. Refer to electrical characteristics. 0: Wide 1: Narrow (default) Read/Write Reset Value: 0010 1000 (28h)
7
PBVIV PBVIVAM[1:0] EN PBVIVTC[2:0]
0
Sad0F Read/Write Reset Value: 0000 1001 (09h)
7
PBGE PBIN N S PBCRST[1:0]
Bit 7 = PictureBooST vivacity and brightness enable. 0: Disable (default) 1: Enable Bits[6:5] = PictureBooST Vivacity Amplitude Control. Bit 4 = Reserved. Bits[3:1] = PictureBooST Vivacity Time Constant Control. Bit 0 = Reserved.
0
PBBRIG[1:0]
23/34
Electrical Specifications
STV9212
4
4.1
Electrical Specifications
Absolute Maximum Ratings
All voltages refer to the GNDA pin.
Symbol
VCCA VCCP VIN VI VESD TSTG TOPER
Parameter
Supply voltage on VCCA (Pin 7) Supply voltage on VCCP (Pin 21) Voltage at any pin except video inputs and supply pins Voltage at video inputs (Pins 1,3 and 5) ESD susceptibility Human Body Model (100 pF discharge through 1.5 k) Storage Temperature Operating Junction Temperature
Min.
TBD TBD TBD TBD TBD -40 -40
M ax.
5.5 8.8 5.5 1.4 2 +150 +150
Units
V V V V kV C C
4.2
Thermal Data
Symbol
RthJA TAMB
P ar am et er
Junction-to-Ambient Thermal Resistance Operating Ambient Temperature
Min.
Typ.
60
Max.
Units
C/W
0
70
C/W
4.3
Static Electrical Characteristics
TAMB = 25C, VCCA = 5V, and VCCP = 8V, unless otherwise specified. All voltages refer to the GNDA pin.
Symbol
Supply VCCA VCCP VCCPS ICCA ICCP IS
P ar am et er
Test Conditions
Min.
Typ.
M ax.
Units
Supply Voltage Power Stage Supply Voltage Power Supply Voltage Stand-by Threshold VCCA Supply Current VCCP Supply Current Total Supply Current in Stand-by Mode
Pin 7 Pin 21 Pin 21 VCCA = 5V (PBGEN Disable) VCCA = 5V (PBGEN Enable) VCCP = 8V Pin 21 and pin 7
4. 5 4. 5 2. 5
5 8 3.0 65 85 50
5.5 8.8 3.5
V V V mA mA mA
6
mA
Inputs and Outputs VI VO VIL VIH IIL IIN Video Input voltage amplitude Output voltage swing Low level input voltage (TTL) High level input voltage (TTL) BLK input current Input current OSD, FBLK, PB, HS,BLK OSD, FBLK, PB, HS,BLK BLK OSD, FBLK, PB 2. 4 -0.1 -1 +1.0 1 0.5(1) 0.7 1 VCCP -0.5V 0.8 V V V V mA A
24/ 34
STV9212
Symbol
RHS VAMPSB
Electrical Specifications
P ar am et er
Input resistance Output voltage at AMPCTL pin, standby (Figure 18) HS I²C-bus bit ASTBY = 1 or/and VCCP < VCCPS Sink current 200A I²C-bus bit ASTBY = 1 I²C-bus bit ABLEN = 1 Sink current 0A BLKI at high level I²C-bus bit ASTBY = 0 and VCCP > VCCPS Sink current 0A
Test Conditions
Min.
Typ.
40 80
M ax.
Units
k
200
mV
VAMPBL
Output voltage at AMPCTL pin, blanking (Figure 18)
TBD
1.6
TBD
V
VAMPHI
Output voltage at AMPCTL pin, no standby, no blanking (Figure 18)
3.1
V
4.4
Dynamic Electrical Characteristics
TAMB = 25C, VCCA = 5 V, VCCP = 8 V, Vi = 0.7 VPP, C LOAD = 5 pF, RS = 100 serial resistor between output pin and CLOAD, unless otherwise specified. "x" denotes channel number and can assume values of 1, 2 and/or 3. All voltages refer to the GNDA pin.
Symbol
P ar am et er
Test Conditions
Min.
Typ.
M ax.
Units
Video Output Signal (Pins 18, 20 and 22) - Contrast and Drive G M aximum total gain for video path with PictureBooST off I²C-bus fields CRST = 7Eh, DRIVEx = 7Eh PBGEN = 0 I²C-bus fields CRST = 7Eh, DRIVEx = 7Eh PBGEN = 0 PBGEN = 1 I²C-bus fields CRST = 40h, DRIVEx = 40h (POR state) Max. to min. contrast (CRST = 7Eh to CRST = 01h) Max. to min. drive (DRIVEx = 7Eh to DRIVEx = 01h) I²C-bus fields CRST = 40h, DRIVEx = 40h (POR state) 12 dB
VOM
M aximum video output voltage(2)
2.8 4.0 TBD 28 13 0.1
V V V dB dB dB
VO N CAR DAR GM
Nom inal video output voltage Contrast control range Drive control range G ain matching (3)
Video Output Signal - OSD referenced to output black level DRIVEx = 7Eh OSDCRST = 0Fh OSDCRST = 0h
VOSD
O SD insertion output level
4.9 0
V V
Video Output Signal - VIP VVIP Video Insertion Pulse level From Infrablack level to black level VIP = 1 0.4 0.2 Vpp Vpp
VIP = 0 (4)
Video Output Signal - Infra Black Level (Figure 15) Vibmin Vibof Infra black level pedestal Infra black offset component
0.4
V V V V V V
IBOF = 3Fh IBOF = 0h IBLx = 0h or MOD = 1 (AC mode) IBLx = FFh, MOD = 0 (DC mode) IBLRG = 1 IBLRG = 0
2.1 0 0 1.3 1.8
Vibl[x]
Infra black level component
25/34
Electrical Specifications
Symbol P ar am et er Test Conditions Min. Typ.
STV9212
M ax. Units
Cut-off Output (Pins CO1, CO2 and CO3) VCOmin VCOmax Pedestal level on COx outputs Upper limitation on COx outputs Sum of VbriAC+ViblAC or VbriDC exceeding the limit 0.5 VCCA -0.5V 0 0.4 0.8 1.25 1.9 0 4 0 0 3.7 1.85 V V
VbriAC
Brightness component in AC mode (Figure 16)
MOD = 1 (AC mode) BRIG = 0h BRIG = FFh: BRIGRG = 00b BRIGRG = 01b BRIGRG = 10b BRIGRG = 11b MOD = 0 (DC mode) BRIG = 0h BRIG = FFh MOD = 0 (DC mode) MOD = 1 (AC mode) IBLx = 0h IBLx = FFh: IBLRG = 0 IBLRG = 1
V V V V V V V V V V V
VbriDC
Brightness component in DC mode on CO3 pin(6) (Figure 17)
ViblAC(x)
Cut-off component
PictureBooSTTM Block (Figure 9)
GPB
M aximum gain
PBGEN = 1 PBCRST = 00b PBCRST = 01b PBCRST = 10b PBCRST = 11b PBGEN = 1 and PBVIVEN = 1 PBBRIG = 00b PBBRIG = 01b PBBRIG = 10b PBBRIG = 11b PBGEN = 1 and PBVIVEN = 1 PBVIVAM = 00b PBVIVAM = 01b PBVIVAM = 10b PBVIVAM = 11b PBGEN = 1 and PBVIVEN = 1 PBVIVTC = 000b PBVIVTC = 001b PBVIVTC = 111b
0.8 1.6 2.3 3 64 48 32 16 12.5 25 37.5 50 0 35 245
dB dB dB dB mV mV mV mV % % % % ns ns ns
VBriPB
PictureBooST brightness expressed in equivalent input level
Vviv/A
Vivacity amplitude as percentage of its host square pulse level before PictureBooST("A" in Figure 9)
viv
Vivacity time constant
ABL (Figure 9) GABL VThABL IABL ABL gain ABL threshold voltage ABL input current VABL = 3.2V VABL = 1V VABL>3.2 V VABL = 1 V 0 -15 3 0 -2 dB dB V A A
Video Output Signal - Dynamic Performances (Figure 15) tr, tf Rise Time, Fall Time
(5)
VOUT = 2VPP (VIP exclusive) BW = 0Fh BW = 00h VOUT = 2VPP, sinus wave, -3dB BW = 0Fh BW = 00h
3.5 7 TBD TBD
ns ns M Hz M Hz
BW
Large signal bandwidth
26/ 34
STV9212
Symbol
CT
Electrical Specifications
P ar am et er
Crosstalk between Video Outputs
Test Conditions
VOUT = 2VPP f = 10 MHz f = 50 M Hz
Min.
Typ.
TBD TBD
M ax.
Units
dB dB
4.5
I²C-Bus Electrical Characteristics
Tamb = 25 C, VCCA = 5 V, VCCP = 8 V, Vi = 0.7 VPP, CLOAD = 5 pF
Symbol
VIL VIH IIN fSCL(Max.) VOL
Param eter
Low Level Input Voltage High Level Input Voltage Input Current (Pins SDA, SCL) SCL Maximum Clock Frequency Low Level Output Voltage
Test Conditions
On Pins SDA, SCL
Min.
Typ.
M ax.
1.5
Unit s
V V
3 0.4 V < VIN < 4.5 V -10 200 SDA pin when ACK Sink Current = 6 mA 0.6 +10
A kHz V
4.6
I²C-Bus Interface Timing Requirements
Symbol
tBUF tHDS tSUP tLOW tHIGH tHDAT tSUDAT tr tf
P aram eter
Time the bus must be free between two accesses Hold Time for Start Condition Set-up Time for Stop Condition The Low Period of Clock The High Period of Clock Hold Time Data Set-up Time Data Rise Time of both SDA and SCL Fall Time of both SDA and SCL
Min.
1300 600 600 1300 600 300 250
Typ.
M ax.
Units
ns ns ns ns ns ns ns
1 300
s ns
Figure 20: I²C-Bus Timing Diagram
tBUF SDA tHDS SCL tHIGH
tHDAT
tSUDAT
tSUP
tLOW
Notes on Electrical Characteristics
Note 1. The video on the preamplifier output must remain above 0.5V even for high frequency signals. 2. Assuming that the video output signal remains inside the linear area of the preamplifier output (between 0.5V and VCCP - 0.5V).
27/34
Electrical Specifications
3. Matching measured between the different outputs.
STV9212
4. When the Blanking signal is present on the BLK input, the VIP insertion pulse is always generated. Only its amplitude changes (see Figure 12). 5. tR, tF are simulated values, assuming an ideal input signal with rise/fall time = 0.1 ns. Measured between 10% and 90% of the pulse height. 6. When MOD = 0, the CO1 and CO2 are internally grounded through resistors.
28/ 34
STV9212
Soldering Information
5
Soldering Information
The device can be soldered by wave, dipping or manually. Wave soldering is the preferred method for mounting through-hole mount IC packages on a printed-circuit board.
Soldering by dipping or by solder wave
The maximum permissible temperature of the solder is 260 C; solder at this temperature must not be in contact with the joints for more than 5 seconds.The total contact time of successive solder waves must not exceed 5 seconds. The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (TSTG[max]). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit.
Manual soldering
Apply the soldering iron (24 V or less) to the lead(s) of the package, either below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 C, contact may last up to 5 seconds.
29/34
Package Mechanical Data
STV9212
6
Package Mechanical Data
Figure 21: 24-Pin Plastic Dual In-Line Package, Shrink 300-mil Width
E E1
A1 A2
A
L Stand-off b b2 e
0 .0 1 5 in.
eA eB
c D E
24
13 E1
0.015 in. 0.38 mm. Gage Plane
1
12 eC eB
Table 5: Package Dimensions Millimeters Dim.
A A1 A2 b b2 c D E E1 e eA eB eC L N
Inches Max.
5. 08
Min.
0.51 3.05 0.38 0.89 0.23 22.35 7.62 6.10
Typ.
Min.
0.020 0.120 0.015 0.035 0.009 0.880 0.300 0.240
Typ.
M ax.
0.200
3.30 0.46 1.02 0.25 22.61 6.40 1.78 7.62
4. 57 0. 56 1. 14 0. 38 22.86 8. 64 6. 86
0.130 0.018 0.040 0.010 0.890 0.252 0.070 0.300
0.180 0.022 0.045 0.015 0.900 0.340 0.270
0.00 2.54
3.30
10.92 1. 52 0.000 3. 81 0.100 Num ber of Pins 24
0.130
0.430 0.060 0.150
30/ 34
STV9212
Input/Output Diagrams
7
Input/Output Diagrams
Figure 22: Video Inputs
Figure 25: Hsync Input
VCCA 30k 2
VCCA
I N1 1
HIGH IMPEDANCE GNDA
Idem for pads IN2 (3) and IN3 (5)
GNDA
GNDL
Figure 23: ABL Input
Figure 26: PictureBooST and OSD Inputs
VCCA VCCA
1k ABL OSD1 9
4
GNDA GNDA GNDL
Idem for pads OSD2 (10), OSD3 (11) PB (8), FBLK (12)
Figure 24: Amplifier Control Output
Figure 27: Analog Supplies
VCCA
VCCA
7
(8V)
AMPCTL 23
100
LOGIC PART
GNDA
GNDA
6
31/34
Input/Output Diagrams
STV9212
Figure 28: I²C-Bus
Figure 31: Output Stage Ground
(8V) SCL 13
30k VCCA
4pF
GNDA
GNDL
GNDP 19
30k
SDA 14 GNDA 4pF GNDA GNDL
Figure 29: Output Stage Supply and Video Outputs
Figure 32: Cut-off DAC Output Pins
VCCP 19
(20V) OUT1 22
VCCA
CO1 1 7
GNDA GNDA GNDP
Idem for pads OUT2 (20) and OUT3 (18)
Idem for pads CO2 (16) and CO3 (15)
Figure 30: Blanking / Video Clamping Sync Inputs
VCCA
BLK
24
GNDA
GNDL
32/ 34
STV9212
Revision History
8
Revision History
Table 6: Summary of Modifications
Version
1.0 1.1
D ate
14 Nov 2002 03 Jul 2003 First Issue Minor modifications.
Description
33/34
STV9212
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan M alaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. www.st.com
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