MAX13325_12 Datasheet, PDF (10/21 Pages) Maxim Integrated Products – Dual Automotive, Audio Line Drivers with I2C Control and Diagnostic

MAX13325/MAX13326
Dual Automotive, Audio Line Drivers
with I²C Control and Diagnostic
Table 2. Configuration Register Format
FUNCTION
Configuration
Register
ADDRESS
CODE (HEX)
0x00
D7
DIAG
REGISTER DATA
D6
D5
D4
D3
ENABLE MUTE CPOFF OLDL
D2
OLDR
Configuration Register
POR STATE
D1
D0
(HEX)
CPF1 CPF0
0x00
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.
CPOFF: Set the CPOFF bit to 1 to turn off the charge pump. CHOLD pin must be externally supplied (see the VCPH
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.
Table 2a. Charge-Pump Frequency Bits
CPF1
0
0
1
1
CPF0
0
1
0
1
FREQUENCY (kHz)
333
190
426
260
CPF[1:0]: Sets the frequency of the charge pump.
Table 3. Command Byte Register Format
FUNCTION
ADDRESS
CODE (HEX)
D7
D6
Command Byte
Register
0x01
RETRYR
RETRYL
REGISTER DATA
D5 D4 D3
x
x
x
Command Byte Register
POR STATE
D2 D1 D0
(HEX)
x
x
x
0x00
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.
10  
Maxim Integrated