13/21

TDA7563PD

Figure 27. Thermal Foldback Diagram

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

disappear).

high-offset message disappears).

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

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.

Tj ( °C)

TH. SH.

START

TH. SH.

END

Vout

TH. WARN.

ON

Tj ( °C)

Vout

Tj ( °C)

signal)

CD out