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TDA7562

If R/W = 1, the TDA7562 sends 4 "Diagnostics Bytes" to

µP: 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)