TDA9203A Просмотр технического описания (PDF) - STMicroelectronics

Номер в каталоге

Компоненты Описание

производитель

TDA9203A

I²C BUS CONTROLLED 70MHz RGB PREAMPLIFIER

STMicroelectronics 

TDA9203A

FUNCTIONAL DESCRIPTION (continued)

Figure 4 : Waveforms VOUT, BRT, CONT, OSD

HSYNC

BPCP

BLK

Video IN

FBLK

OSD IN

V (4)

CONT

VOUT1, VOUT2, VOUT3

V (5)

OSD

V (3)

BRT

V (2)

BLACK

V (1)

DC

OSD CONT

BRT

0.4V fixed

Notes : 1.

2.

3.

4.

5.

VDC = 0.5 to 2.5V

VBLACK = VDC + 0.4V

VBRT = VBLACK + BRT (with BRT = 0 to 2.5V)

VCONT = VBRT + CONT with CONT = k x Video IN (CONT = 5VPP max. for VIN = 0.7VPP)

VOSD = VBRT + OSD with OSD = k1 x OSDIN (OSD max. = 5.5VPP, OSD min. = 360mVPP)

Figure 5 : Waveforms (DRIVE adjustment)

HSYNC

BPCP

BLK

Video IN

FBLK

OSD IN

VOUT1, VOUT2, VOUT3

VOSD

VCONT

VBRT

VBLACK

VDC

Two exemples

of drive adjustment (1)

Note : 1. Drive adjustment modifies the following voltages : VCONT, VBRT and VOSD.

Drive adjustment do not modify the following voltages : VDC and VBLACK.

Figure 6 : I2C Write Operation

SCL

SDA

Start

I2C Slave Address

W

A7 A6 A5 A4 A3 A2 A1 A0

D7 D6 D5 D4 D3 D2 D1 D0

ACK

Register Address

ACK

Data Byte

ACK Stop

5/13

Share Link: