TDA7563PDTR(2004) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7563PDTR
(Rev.:2004)

Multifunction quad power amplifier with built-in diagnostics features

STMicroelectronics 

Figure 27. Thermal Foldback Diagram

Vout

TH. WARN.

ON

TDA7563PD

Vout

TH. SH.

START

TH. SH. Tj ( °C)

END

CD out

< TSD

> TSD (with same input

signal)

Tj ( °C)

Tj ( °C)

8 I2C PROGRAMMING/READING SEQUENCES

A correct turn on/off sequence respectful of the diagnostic timings and producing no audible noises could be as

follows (after battery connection):

TURN-ON: PIN2 > 7V --- 10ms --- (STAND-BY OUT + DIAG ENABLE) --- 500 ms (min) --- MUTING OUT

TURN-OFF: MUTING IN --- 20 ms --- (DIAG DISABLE + STAND-BY IN) --- 10ms --- PIN2 = 0

Car Radio Installation: PIN2 > 7V --- 10ms DIAG ENABLE (write) --- 200 ms --- I2C read (repeat until All faults

disappear).

OFFSET TEST: Device in Play (no signal) -- OFFSET ENABLE - 30ms - I2C reading (repeat I2C reading until

high-offset message disappears).

9 I2C BUS INTERFACE

Data transmission from microprocessor to the TDA7563PD and viceversa takes place through the 2 wires

I2C BUS interface, consisting of the two lines SDA and SCL (pull-up resistors to positive supply voltage

must be connected).

9.1 Data Validity

As shown by fig. 28, the data on the SDA line must be stable during the high period of the clock. The HIGH and

LOW state of the data line can only change when the clock signal on the SCL line is LOW.

9.2 Start and Stop Conditions

As shown by fig. 29 a start condition is a HIGH to LOW transition of the SDA line while SCL is HIGH. The stop

condition is a LOW to HIGH transition of the SDA line while SCL is HIGH.

9.3 Byte Format

Every byte transferred to the SDA line must contain 8 bits. Each byte must be followed by an acknowledge bit.

The MSB is transferred first.

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