STV9211 datasheet(10/37 Pages) STMICROELECTRONICS

Part #	STV9211

Description	150 MHz PIXEL VIDEO CONTROLLER FOR MONITORS IN DC-COUPLING MODE

PDF	37 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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10 / 37 page

Functional description

STV9211

10/37

2.6

Drive adjustment (3 x 8 bits)

In order to perform the “White balance” adjustment, the gain of the three RGB signals are adjustable

separately via the three Drive amplifiers (Registers 3, 4 and 5, I2C table 1).

The very large range of the Drives (48 dB) allows different standards or custom color temperatures.

It can also be used to adjust the output voltages at the optimum amplitude to drive the CRT drivers,

keeping the whole contrast control for the end-user only.

Figure 6: Drive adjustment

Adjustment

Channel

each channel

Independantly

name / address

Number step / resolution

min / max

Attenuation

DRV = min

V =

Typ

Drive

DRV / 03, 04, 05

256 (8 bit) / 0,19 dB

0 / - 48 dB

DRV = min

V =

Typ

Case #1: Brightness before Drive

BLK

Output

Case #2: Brightness after Drive

Black levels

InfraBlack level

Black level

InfraBlack level

STV9211 Datasheet(PDF) 10 Page - STMicroelectronics