TDA7566 datasheet(22/28 Pages) STMICROELECTRONICS

Numer części	TDA7566

Szczegółowy opis	4x40W multifunction quad power amplifier with built-in diagnostics features

PDF	28 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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22 / 28 page

Software specifications

TDA7566

22/28

If R/W = 1, the TDA7566 sends 4 "Diagnostics Bytes" to mP: DB1, DB2, DB3 and DB4.

Current detection diagnostic enabled (D2 = 1)

Current detection diagnostic defeat (D2 = 0)

Table 8.

DB1

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 < 250mA - Open load (D5 = 1)

Output peak current > 500mA - 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)

Table 9.

DB2

Offset detection not activated (D7 = 0)

Offset detection activated (D7 = 1)

Current sensor not activated (D6 = 0)

Current sensor activated (D6 = 1)

Channel LR

current detection

Output peak current < 250mA - Open load (D5 = 1)

Output peak current > 500mA - Open load (D5 = 0)

Table 7.

IB2 (continued)

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