TDA7567PD Datasheet, PDF (24/30 Pages) STMicroelectronics – 4 x 50 W differential quad power amplifier with built-in diagnostics features

Software specifications
TDA7567PD
Table 7. IB2 (continued)
Bit
Instruction decoding bit
D5
Normal muting time (D5 = 0)
Fast muting time (D5 = 1)
Standby on - Amplifier not working - (D4 = 0)
D4
Standby off - Amplifier working - (D4 = 1)
Power amplifier mode diagnostic (D3 = 0)
D3
Line driver mode diagnostic (D3 = 1)
Current detection diagnostic enabled (D2 =1)
D2
Current detection diagnostic defeat (D2 =0)
Right channel power amplifier working in standard mode (D1 = 0)
D1
Power amplifier working in high efficiency mode (D1 = 1)
Left channel power amplifier working in standard mode (D0 = 0)
D0
Power amplifier working in high efficiency mode (D0 = 1)
If R/W = 1, the TDA7567PD sends 4 "Diagnostics Bytes" to µP: DB1, DB2, DB3 and DB4.
Table 8. DB1
Bit
Instruction decoding bit
D7 Thermal warning 1 active (D7 = 1) T = 140 °C
Diag. cycle not activated or not terminated (D6 = 0)
D6
Diag. cycle terminated (D6 = 1)
Channel CH3
Channel CH3
current detection IB2 (D7) = 0
current detection IB2 (D7) = 1
D5
Output peak current < 300 mA - Open load (D5 = 1) Output peak current < 125 mA - Open load (D5 = 1)
Output peak current > 500 mA - Normal load (D5 = 0) Output peak current > 250 mA - Normal load (D5 = 0)
Channel CH3
D4 Turn-on diagnostic (D4 = 0)
Permanent diagnostic (D4 = 1)
Channel CH3
D3 Normal load (D3 = 0)
Short load (D3 = 1)
Channel CH3
Turn-on diag.: No open load (D2 = 0)
D2 Open load detection (D2 = 1)
Offset diag.: No output offset (D2 = 0)
Output offset detection (D2 = 1)
Channel CH3
D1 No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
Channel CH3
D0 No short to GND (D1 = 0)
Short to GND (D1 = 1)
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Doc ID 16903 Rev 1