TDA8596 NXP Semiconductors, TDA8596 Datasheet - Page 16

• Manufacturer Part Number: TDA8596
• Description: The TDA8596 is a quad Bridge Tied Load (BTL) audio power amplifier with symmetricalinputs, made in BCDMOS technology
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8596_2
Product data sheet
7.11 Diagnostics
Diagnostic information can be read via the I
the DIAG pin or STB pin. The information on the DIAG pin is partly fixed, i.e. power-on
reset occurred and low or high battery events. Through I
information (i.e. load faults, temperature alarms and clip detection) can be made available.
This information will be directed to the DIAG pin through a logical OR function. In case of
any of the above mentioned failures, the DIAG pin will remain LOW so the microcontroller
is triggered to read out the failure information via the I
as microcontroller interrupt to minimize I
the DIAG pin will be released.
The STB pin can be configured as a second clip detection pin. The clip detection level is
equal for all channels. It is possible to redirect the clip information of all separate channels
to each of the two diagnostic pins DIAG or STB. This option can be used to distinguish
between for instance clipping on the front and rear side channels (i.e. by redirecting the
front channels to one diagnostic output and the rear channels to the second diagnostic
output).
Table 4
legacy mode:
Table 4.
Diagnostic
information
Power-on reset
Low battery
Clip detection
Fig 10. Temperature controlled amplifier gain
(dB)
G
shows the diagnostic options for the DIAG pin and STB pin for both I
v
30
20
10
0
145
Diagnostic information per pin for various modes
I
2
C-bus controlled 4
Rev. 02 — 8 November 2007
I
Pin DIAG
after power-on reset;
pin DIAG will remain
LOW until amplifier has
been started
yes
can be enabled per
channel
2
C-bus mode
155
2
45 W power amplifier with symmetrical inputs
C-bus traffic). As soon as the failure is removed,
2
C-bus and it can also be made available on
Pin STB
no
no
can be enabled per
channel
2
165
C-bus (the DIAG pin can be used
2
C-bus commands selectable
T
j
( C)
Legacy mode
Pin DIAG
no
yes
yes; fixed level for all
channels on 2 %
TDA8596
001aad174
© NXP B.V. 2007. All rights reserved.
175
2
C-bus and
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