STV9212 datasheet(22/34 Pages) STMICROELECTRONICS

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I²C-Bus Interface Specifications

STV9212

22/34

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.

Bits[3:2] = Width of ICP pulse when bit

BCSC1 is 0.

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:

Refer to

BLKPOL bit description.

Sad09

Read/Write

Reset Value: 0001 0000 (10h)

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.

0: Test mode

1: Normal operation mode (Default)

Bit 3 = Reserved.

Bit 2 = Application mode selection.

0: Application with DC-coupled cathodes.

(Default)

1: Application with AC-coupled cathodes.

Bit 1 = 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.

Bit 0 = 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

Sad0A, Sad0B and Sad0C

Read/Write

Reset Value: 1000 0000 (80h)

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.

Sad0D

Read/Write

Reset Value: 0000 1000 (08h)

Bit 7 = Preamplifier and Amplifier STandBY

selection

0: Normal (default)

1: Standby

Bit 6 = Reserved.

BCSC1

BCSC0

Selected Source

HS pin trigger (Default)

BLK pin trigger

Don’t care

HS pin pulse

BCWDTH

BCPC Width

0.33 µs

0.66 µs (Default)

1 µs

1.33 µs

BCEDGE

BLKPOL

Trigger on BLK

Rising edge (default)

Falling edge

Rising edge

ASTB

ABLE

TST2

MOD

SWBL

BLKP

IBL1[7:0]

IBL2[7:0]

IBL3[7:0]

PAST

TST[4:3]

BW[3:0]

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