TDA7564BPDTR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7564BPDTR

4 x 50W multifunction quad power amplifier with built-in diagnostics features

STMicroelectronics 

TDA7564B

Software specifications

Table 7. IB2

Bit

Instruction decoding bit

Current detection threshold

D7 High th (D7 = 0)

Low th (D7 =1)

D6 0

Normal muting time (D5 = 0)

D5

Fast muting time (D5 = 1)

D4

Stand-by on - Amplifier not working - (D4 = 0)

Stand-by 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)

Right Channels

D1 Power amplifier working in standard mode (D1 = 0)

Power amplifier working in high efficiency mode (D1 = 1)

Left Channels

D0 Power amplifier working in standard mode (D0 = 0)

Power amplifier working in high efficiency mode (D0 = 1)

If R/W = 1, the TDA7564B 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=155 °C

Diag. cycle not activated or not terminated (D6 = 0)

D6

Diag. cycle terminated (D6 = 1)

Channel LF

Channel LF

Current detection IB2 (D7) = 0

Current detection IB2 (D7) = 1

D5

Output peak current < 250 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 LF

D4 Turn-on diagnostic (D4 = 0)

Permanent diagnostic (D4 = 1)

Channel LF

D3 Normal load (D3 = 0)

Short load (D3 = 1)

Channel LF

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 LF

D1 No short to Vcc (D1 = 0)

Short to Vcc (D1 = 1)

Channel LF

D0 No short to GND (D1 = 0)

Short to GND (D1 = 1)

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