MAX13326 Maxim Integrated Products, MAX13326 Datasheet - Page 15

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

When in diagnostic mode, if any of the output pairs is
excessively loaded, the MAX13325/MAX13326 issue a
warning and report the condition through the I
face and the FLAG output. The faulted channel is not
switched off. See Table 15.
When in diagnostic mode and the open-load detec-
tion is initiated, the selected channel is switched off for
1ms during which the diagnosis is taking place. Upon
Table 15. Overcurrent Diagnostic
Table 16. Open-Load Diagnostic
Table 17. Overvoltage Diagnostic
Overcurrent on Right
FAULT CONDITION
FAULT CONDITION
Right-Channel Open
FAULT CONDITION
Overcurrent on Left
Left-Channel Open
Overvoltage
Shutdown
Channel
Channel
Load
Load
______________________________________________________________________________________
OPENR bit is set in the RFAULT
OPENL bit is set in the LFAULT
LIMITR bit is set in the RFAULT
LIMITL bit is set in the LFAULT
DUMP bit is set in the GFAULT
Left and right channels switch
FLAG bit set. See Table 7.
FLAG bit set. See Table 7.
FLAG bit set. See Table 7.
FLAG bit set. See Table 7.
FLAG bit set. See Table 7.
Dual Automotive, Audio Line Drivers
off and output goes to a
high-impedance state.
FLAG is asserted low.
FLAG is asserted low.
FLAG is asserted low.
FLAG is asserted low.
FLAG is asserted low.
register. See Table 5.
register. See Table 5.
register. See Table 6.
register. See Table 6.
register. See Table 4.
STATUS REPORT
STATUS REPORT
STATUS REPORT
with I
Overcurrent
Open Load
2
C inter-
2
C Control and Diagnostic
set MOPENR bit to 1. See
set MOPENL bit to 1. See
set MLIMITR bit to 1. See
set MLIMITL bit to 1. See
In GMASK register, set
In the RMASK register,
In the LMASK register,
In the RMASK register,
In the LMASK register,
Cannot be masked.
MDUMP bit to 1.
detecting an open load on any channel, the MAX13325/
MAX13326 report the condition using the I
and the FLAG output. See Table 16.
When in diagnostic mode, if the MAX13325/MAX13326
exceed the V
during a load-dump condition), the device reports the
condition using the I
See Table 17.
See Table 8.
UNMASK
UNMASK
UNMASK
Table 10.
Table 10.
Table 9.
Table 9.
DD
overvoltage threshold (for example
2
C interface and the FLAG output.
V
the RETRYL bit to 1. Right channel
Left channel is enabled by setting
threshold. Cleared on reading the
is enabled by setting the RETRYR
DD
Cleared on reading the RFAULT
Cleared on reading the LFAULT
GFAULT register. Note: 500ms
autoretry in stand-alone mode.
Load current falls below the
Load current falls below the
voltage falls below overvoltage
current-limit threshold.
current-limit threshold.
the LFAULT register.
the RFAULT register.
bit to 1. See Table 3.
Cleared on reading
Cleared on reading
RECOVERY
RECOVERY
RECOVERY
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register.
register.
Overvoltage
2
C interface
15