MAX13326 Maxim Integrated Products, MAX13326 Datasheet - Page 13

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

When the DIAG bit and the appropriate mask bits are
set to 1, the MAX13325/MAX13326 enter diagnostic
mode. In this mode, the MAX13325/MAX13326 detect
short to GND, short to battery, overcurrent condition,
overtemperature condition, excessive offset, and report
the diagnosis using the I
and the FLAG output.
For stand-alone mode, there exists a 500ms stand-alone
fault retry function (for autoretry) until the fault goes
away. The FLAG output is pulsed to indicate a fault.
When in diagnostic mode, the MAX13325/MAX13326
detect if any of the differential outputs is shorted to V
or battery. Upon detection of the short to V
the faulted channel is switched off and its output goes
into a high-impedance state. The fault is reported using
the I
Table 11. Output Short to V
Left-Channel Output
Short to V
Right-Channel
Output Short to V
FAULT CONDITION
2
C interface and the FLAG output. See Table 11.
DD
I
2
C and Stand-Alone Diagnostics
DD
______________________________________________________________________________________
Left channel switches off and output
SVDDR bit is set in the RFAULT
output goes to high-impedance
SVDDL bit is set in the LFAULT
goes to high-impedance state.
Right channel switches off and
2
C serial interface, FLAG bit,
FLAG bit set. See Table 7.
FLAG bit set. See Table 7.
Dual Automotive, Audio Line Drivers
FLAG is asserted low.
FLAG is asserted low.
register. See Table 5.
register. See Table 6.
STATUS REPORT
Output Short to V
state.
DD
with I
/Battery Diagnostic
DD
or battery,
2
DD
DD
C Control and Diagnostic
In RMASK register, set
In LMASK register, set
MSVDDR bit to 1. See
Cannot be masked.
Cannot be masked.
When in diagnostic mode, the MAX13325/MAX13326
detect if any of the differential outputs is shorted to
ground. Upon detection of the short to ground, the
faulted channel is switched off and its output goes into a
high-impedance state. The fault is reported using the I
interface and the FLAG output. See Table 12.
When in diagnostic mode, if the MAX13325/MAX13326
exceed the overtemperature warning or temperature shut-
down thresholds the device reports the condition using
the I
When in diagnostic mode with mute enabled, if there
is excessive offset on any output, the MAX13325/
MAX13326 reports the condition through the I
face and the FLAG output. See Table 14.
MSVDDL bit to 1.
See Table 9.
UNMASK
Table 10.
2
C interface and the FLAG output. See Table 13.
RETRYR bit to 1 in the Command
Cleared on reading the LFAULT
Output is enabled by setting the
Cleared on reading the RFAULT
Output is enabled by setting the
Note: 500ms autoretry in stand-
RETRYL bit to 1 in the Common
Note: 500ms autoretry in stand-
Byte register. See Table 3.
Byte register. See Table 3.
register. See Table 5.
register. See Table 6.
RECOVERY
alone mode.
alone mode.
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Output Short to GND
Overtemperature
Excessive Offset
2
C inter-
2
13
C