MAX13326 Maxim Integrated Products, MAX13326 Datasheet - Page 9

• Manufacturer Part Number: MAX13326
• Description: Dual Automotive Audio Line Drivers
• Manufacturer: Maxim Integrated Products

The MAX13325/MAX13326 audio line drivers are designed
to transmit audio data across noisy environments. The dif-
ferential interface is highly resistant to noise injection from
external sources common to automotive applications.
Table 1. Register Address Map
PIN
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
—
ADDRESS
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
OUTRM
CHOLD
OUTLM
OUTRP
OUTLP
NAME
PGND
MUTE
ADD0
ADD1
FLAG
_______________________________________________________________________________________
GND
SDA
SCL
CSS
CM
CP
EP
Detailed Description
Mute Input. Drive MUTE low to mute the outputs. The outputs are low impedance in mute.
I
Connect ADD0 and ADD1 to GND for stand-alone mode.
Serial Clock
Serial-Data IO
I
Connect ADD0 and ADD1 to GND for stand-alone mode.
Analog Ground. Ground connection for the input bias and gain circuits.
Right Audio Negative Output. Each output is current limited.
Right Audio Positive Output . Each output is current limited.
Power Ground. Ground connection for the output stage drivers.
Charge-Pump Output. Bypass CHOLD with 1FF to PGND.
Left Audio Negative Output. Each output is current limited.
Left Audio Positive Outputs. Each output is current limited.
Charge-Pump Flying Capacitor, Positive Connection
Charge-Pump Flying Capacitor, Negative Connection
Open-Drain Fault Flag Output. FLAG indicates a fault on any one channel. In stand-alone mode,
FLAG is stretched to a typical pulse width of 100ms.
Soft-Start Capacitor Connection. CSS is charged/discharged by < 100FA current to get soft mute/
play transition. Bypass to GND through a 220nF capacitor.
Exposed Pad. Connect to PGND.
Dual Automotive, Audio Line Drivers
2
2
General Faults Mask
C Address Inputs. Connect ADD0 and ADD1 to V
C Address Inputs. Connect ADD0 and ADD1 to V
Right-Channel Fault
Left-Channel Fault
REGISTER TYPE
Right Faults Mask
Left Faults Mask
Command Byte
Configuration
General Fault
Flag
with I
2
C Control and Diagnostic
CONFIG
GFAULT
RFAULT
LFAULT
GMASK
RMASK
LMASK
The MAX13325/MAX13326 operate in stand-alone or
I
of detecting short to GND or battery, overcurrent, over-
temperature, or excessive offset. A short across another
audio output signal line is also protected.
NAME
2
FLAG
CMD
C-compatible mode with diagnostic outputs capable
FUNCTION
L
L
Pin Description (continued)
, GND, SCL, or SDA to select 7 I
, GND, SCL, or SDA to select 7 I
Cleared on Read
Cleared on Read
READ/WRITE
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read
Read
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0x02 (12dB)
0x03 (0dB)
DEFAULT
2
2
C addresses.
C addresses.
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
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