TDA7562B Datasheet, PDF (23/30 Pages) STMicroelectronics – 4 x 46 W multifunction quad power amplifier with built-in diagnostics features

TDA7562B
Software specifications
Table 7.
Bit
D7
D6
D5
D4
D3
D2
D1
D0
IB2
Instruction decoding bit
0
0
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)
0
0
If R/W = 1, the TDA7562B sends 4 "Diagnostics Bytes" to mP: DB1, DB2, DB3 and DB4.
Table 8.
Bit
D7
D6
D5
D4
D3
D2
D1
D0
DB1
Instruction decoding bit
Thermal warning active (D7 = 1)
Diag. cycle not activated or not terminated (D6 = 0)
Diag. cycle terminated (D6 = 1)
Channel LF
Current detection
Output peak current < 250 mA - Open load (D5 = 1)
Output peak current > 500 mA - Open 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)
Doc ID 17984 Rev 2
23/30