TDA9210 datasheet(8/19 Pages) STMICROELECTRONICS

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TDA9210

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Figure 5. DC Coupling

4.12 - Stand-by Mode

The TDA9210 has a stand-by mode. As soon as

the VCC power (Pin 17) gets lower than 3V (typ.),

the device is set in stand-by mode whatever the

voltage on analog VCCA (Pin 7) is. The analog

blocks are internally switched-off while the logic

parts (I

2C bus, power-on reset) are still supplied.

In stand-by mode, the power consumption is be-

low 20 mW.

4.13 - Serial Interface

The 2-wire serial interface is an I

2C interface. The

slave address of TDA9210 is DC hex.

The host MCU can write into the TDA9210 regis-

ters. Read mode is not available.

In order to write data into the TDA9210, after the

“start” message, the MCU must send the following

data (see Figure 6):

– the I2C address slave byte with a low level for the

R/W bit,

– the byte to the internal register address where

the MCU wants to write data,

– the data.

All bytes are sent with MSB bit first. The transfer of

written data is ended with a “stop” message.

When transmitting several data, the register ad-

dresses and data can be written with no need to

repeat the start and slave addresses.

4.14 - Power-on Reset

A power-on reset function is implemented on the

TDA9210 so that the I

2C registers have a deter-

mined status after power-on. The Power-on reset

threshold for a rising supply on VCCA (Pin 7) is

3.8 V (typ.) and 3.2V when the VCC decreases.

Figure 6. I2C Write Operation

OUTPUT 1,2,3 DC LEVEL

Pins 14-16-18

CRT

Driver

TDA 9210

0.5V to 2.5V (8bits)

110

111

SCL

SDA

ACK

I2C Slave Address

Start

Data Byte

ACK

Stop

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