10 _____________________________________________________________________________________

Dual Automotive, Audio Line Drivers

Configuration Register

DIAG: Set DIAG to 1 to enable diagnostic mode. Write '0' to disable diagnostic mode.

ENABLE: Set ENABLE bit to 1 to enable the device. Write ‘0’ disables the device. Low on the SHDN pin overrides the

ENABLE bit.

MUTE: Set the MUTE bit to 1 to mute both the output channels. Output is low impedance when in mute. Low on the

MUTE pin input overrides the MUTE bit.

parameter in the Electrical Characteristics table). Charge pump is enabled when CPOFF = 0.

OLDL: Write 1 to the OLDL bit to initiate the open-load detection for the left channel. To run OLDL again, write ‘0’ and

‘1’ again.

OLDR: Write 1 to the OLDR bit to initiate the open-load detection for the right channel. To run OLDR again, write ‘0’

and ‘1’ again.

CPF[1:0]: Sets the frequency of the charge pump.

Command Byte Register

RETRYR: The right-channel power amplifier switches off after a fault condition. Write ‘1’ to turn it back on after the fault

condition.

RETRYL: The left-channel power amplifier switches off after a fault condition. Write ‘1’ to turn on the left-channel power

amplifier after the fault condition.

Table 2. Configuration Register Format

Table 3. Command Byte Register Format

Table 2a. Charge-Pump Frequency Bits

FUNCTION

ADDRESS

CODE (HEX)

REGISTER DATA

POR STATE

(HEX)

D7

D6

D5

D4

D3

D2

D1

D0

Configuration

Register

0x00

DIAG

ENABLE

MUTE

CPOFF

OLDL

OLDR

CPF1

CPF0

0x00

FUNCTION

ADDRESS

CODE (HEX)

REGISTER DATA

POR STATE

(HEX)

D7

D6

D5

D4

D3

D2

D1

D0

Command Byte

Register

0x01

RETRYR

RETRYL

x

x

x

x

x

x

0x00

CPF1

CPF0

FREQUENCY (kHz)

0

0

333

0

1

190

1

0

426

1

1

260