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TDA7575BPDTR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32
TDA7575B Software specifications
Doc ID 14103 Rev 3 19/32
6 Software specifications
All the functions of the TDA7575B are activated by I
2
C interface.
The bit 0 of the "Address Byte" defines if the next bytes are write instruction (from P to
TDA7575B) or read instruction (from TDA7575B to µP).
Table 5. Address selection
If R/W = 0, the P sends 2 "instruction bytes": IB1 and IB2.
Table 6. IB1
Bit Address
A6 1
A5 1
A4 0
A3 1
A2 0
A1 B
A0 A
R/W X
Bit Instruction decoding bit
D7 0
D6
Diagnostic enable (D6 = 1)
Diagnostic defeat (D6 = 0)
D5
Offset detection enable (D5 = 1)
Offset detection defeat (D5 = 0)
D4
Gain = 26 dB (D4 = 0)
Gain = 12 dB (D4 = 1)
D3 0
D2
Mute (D2 = 0)
Unmute (D2 = 1)
D1 0
D0
CD 2% (D0 = 0)
CD 10% (D0 = 1)
Software specifications TDA7575B
20/32 Doc ID 14103 Rev 3
Table 7. IB2
If R/W = 1, the TDA7575B sends 2 "Diagnostics Bytes" to P: DB1 and DB2.
Table 8. DB1
Bit Instruction decoding bit
D7 0
D6 0
D5 0
D4
Standby on - Amplifier not working - (D4 = 0)
Standby off - Amplifier working - (D4 = 1)
D3
Power amplifier mode diagnostic (D3 = 0);
Line driver mode diagnostic (D3 = 1)
D2
Current detection diagnostic enabled (D2 = 1)
Current detection diagnostic defeat (D2 = 0)
D1
Power amplifier working in standard mode (D1 = 0)
Power amplifier working in high efficiency mode (D1 = 1)
D0
Current detection threshold high (D7 =0)
Current detection threshold low (D7 =1)
Bit Instruction decoding bit
D7 Thermal warming (if Tchip 150°C, D7 = 1)
D6
Diag. cycle not activated or not terminated (D6 = 0)
Diag. cycle terminated (D6 = 1)
D5
Channel 1
current detection IB2 (D0) = 0
Output peak current < 250 mA - Open load (D5 = 1)
Output peak current > 500 mA - Normal load (D5 = 0)
Channel LF
current detection IB2 (D0) = 1
Output peak current < 125 mA - Open load (D5 = 1)
Output peak current > 250 mA - Normal load (D5 = 0)
D4
Channel 1
Turn-on diagnostic (D4 = 0)
Permanent diagnostic (D4 = 1)
D3
Channel 1
Normal load (D3 = 0)
Short load (D3 = 1)
D2
Channel 1
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)
D1
Channel 1
No short to V
cc
(D1 = 0)
Short to V
cc
(D1 = 1)
D0
Channel 1
No short to GND (D1 = 0)
Short to GND (D1 = 1)
TDA7575B Software specifications
Doc ID 14103 Rev 3 21/32
Table 9. DB2
Bit Instruction decoding bit
D7
Offset detection not activated (D7 = 0)
Offset detection activated (D7 = 1)
D6
Current sensor not activated (D6 = 0)
Current sensor activated (D6 = 1)
D5
Channel LR
Current detection IB2 (D0) = 0
Output peak current < 250 mA - Open load (D5 = 1)
Output peak current > 500 mA - Normal load (D5 = 0)
Channel LR
Current detection IB2 (D0) = 1
Output peak current < TBD mA - Open load (D5 = 1)
Output peak current > TBD mA - Normal load (D5 = 0)
D4
Channel 2
Turn-on diagnostic (D4 = 0)
Permanent diagnostic (D4 = 1)
D3
Channel 2
Normal load (D3 = 0)
Short load (D3 = 1)
D2
Channel 2
Turn-on diag.: No open load (D2 = 0)
Open load detection (D2 = 1)
Permanent diag.: No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1
Channel 2
No short to V
cc
(D1 = 0)
Short to V
cc
(D1 = 1)
D0
Channel 2
No short to GND (D1 = 0)
Short to GND (D1 = 1)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P32

TDA7575BPDTR

Mfr. #:
Buy TDA7575BPDTR
Manufacturer:
STMicroelectronics
Description:
Audio Amplifiers 2 x 75W Multifunct Dual-Bridge Pwr Amp
Lifecycle:
New from this manufacturer.
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