STV9211 datasheet(8/37 Pages) STMICROELECTRONICS

tên linh kiện	STV9211

Giải thích chi tiết về linh kiện	150 MHz PIXEL VIDEO CONTROLLER FOR MONITORS IN DC-COUPLING MODE

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Functional description

STV9211

8/37

2.2

Fast blanking input

The fast blanking pin (FBLK) is TTL compatible. When it is at high level, the input signal is blanked

and replaced by OSD insets defined by binary levels on three OSD inputs and a dedicated OSD

contrast adjustment stage.

2.3

Blanking input

The blanking input BLK is TTL compatible. The active level is either high (positive pulse polarity) or

low (negative pulse polarity). When the level is active, the RGB outputs are at infra-black level,

regardless of the input level. The pulse on the BLK input defines the timing of the internal OCL

signal and it can also define the timing of the internal BPCP pulse. See

Figure 4, Figure 11 and

Chapter 9: I2C register description .

Figure 4: BPCP and OCL generation

Edge

Selection

Automatic

Polarity

Pulse

Generation

Polarity

Selection

Pulse

Generation

BLK

External

BPCP

Internal

OCL

Internal

BLK Polarity

Selection: R9-bit0

Source Selection

HS Edge Selection

Width Selection

BPCP Source Selection

OCL source

Selection: R8-bit7

R8-bit1

R8-bit4

R8-bit2 & bit3

R8-bit0

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