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E-TDA7562

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
13/17
TDA7562
If R/W = 1, the TDA7562 sends 4 "Diagnostics Bytes" to
P: DB1, DB2, DB3 and DB4.
DB1
DB2
D7 Thermal warning active (D7 = 1)
D6
Diag. cycle not activated or not terminated (D6 = 0)
Diag. cycle terminated (D6 = 1)
D5 X
D4 X
D3
Channel LF
Normal load (D3 = 0)
Short load (D3 = 1)
D2
Channel LF
No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1
Channel LF
No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
D0
Channel LF
No short to GND (D1 = 0)
Short to GND (D1 = 1)
D7
Offset detection not activated (D7 = 0)
Offset detection activated (D7 = 1)
D6 X
D5 X
D4 X
D3 Channel LR
Normal load (D3 = 0)
Short load (D3 = 1)
D2 Channel LR
No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1 Channel LR
No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
D0 Channel LR
No short to GND (D1 = 0)
Short to GND (D1 = 1)
TDA7562
14/17
B3
DB4
D7 Stand-by status (= IB1 - D4)
D6 Diagnostic status (= IB1 - D6)
D5 X
D4 Channel RF
Turn-on diagnostic (D4 = 0)
X
D3 Channel RF
Normal load (D3 = 0)
Short load (D3 = 1)
D2 Channel RF
No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1 Channel RF
No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
D0 Channel RF
No short to GND (D1 = 0)
Short to GND (D1 = 1)
D7 X
D6 X
D5 X
D4 X
D3 Channel RR
RNormal load (D3 = 0)
Short load (D3 = 1)
D2 Channel RR
No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1 Channel RR
No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
D0 Channel RR
No short to GND (D1 = 0)
Short to GND (D1 = 1)
15/17
TDA7562
Examples of bytes sequence
1
- Turn-On of the power amplifier with 30dB gain, mute on, diagnostic defeat, CD = 2%.
2
- Turn-Off of the power amplifier
3
- Offset detection procedure enable
4
- Offset detection procedure stop and reading operation (the results are valid only for the offset detection bits
(D2 of the bytes DB1, DB2, DB3, DB4).
■ The purpose of this test is to check if a D.C. offset (2V typ.) is present on the outputs, produced by input
capacitor with anomalous leackage current or humidity between pins.
■ The delay from 4 to 5 can be selected by software, starting from T.B.D. ms
Start Address byte with D0 = 0 ACK IB1 ACK IB2 ACK STOP
X0000000 XXX1XX11
Start Address byte with D0 = 0 ACK IB1 ACK IB2 ACK STOP
X0XXXXXX XXX0XXXX
Start Address byte with D0 = 0 ACK IB1 ACK IB2 ACK STOP
XX1XX11X XXX1XXXX
Start Address byte with D0 = 1 ACK DB1 ACK DB2 ACK DB3 ACK DB4 ACK STOP
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

E-TDA7562

Mfr. #:
Buy E-TDA7562
Manufacturer:
STMicroelectronics
Description:
IC AMP AUDIO PWR 60W 27FLEXIWATT
Lifecycle:
New from this manufacturer.
Delivery:
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