TDA7563ASM datasheet(25/35 Pages) STMICROELECTRONICS

25 / 35 page

TDA7563A

Software specifications

25/35

If R/W = 1, the TDA7563A sends 4 "Diagnostics Bytes" to µP: DB1, DB2, DB3 and DB4.

Table 7.

IB2

Normal muting time (D5 = 0)

Fast muting time (D5 = 1)

Standby on - Amplifier not working - (D4 = 0)

Standby off - Amplifier working - (D4 = 1)

Power amplifier mode diagnostic (D3 = 0)

Line driver mode diagnostic (D3 = 1)

Current Detection Diagnostic Enabled (D2 =1)

Current Detection Diagnostic Defeat (D2 =0)

Right Channel Power amplifier working in standard mode (D1 = 0)

Power amplifier working in high efficiency mode (D1 = 1)

Left Channel Power amplifier working in standard mode (D0 = 0)

Power amplifier working in high efficiency mode (D0 = 1)

Table 8.

DB1

Thermal warning active (D7 = 1), TJ = 155°C

Diag. cycle not activated or not terminated (D6 = 0)

Diag. cycle terminated (D6 = 1)

Channel LF

Current Detection

Output peak current <250mA - Output load (D5 = 1)

Output peak current >500mA - Output load (D5 = 0)

Channel LF

Turn-on diagnostic (D4 = 0)

Permanent diagnostic (D4 = 1)

Channel LF

Normal load (D3 = 0)

Short load (D3 = 1)

Channel LF

Turn-on diag.: No open load (D2 = 0)

Open load detection (D2 = 1)

Offset diag.: No output offset (D2 = 0)

Output offset detection (D2 = 1)

Channel LF

No short to Vcc (D1 = 0)

Short to Vcc (D1 = 1)

Channel LF

No short to GND (D1 = 0)

Short to GND (D1 = 1)

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