TDA7718N Datasheet, PDF (25/40 Pages) STMicroelectronics – 3 band car audio processor

TDA7718N
Description of the audioprocessor
4.11
Audioprocessor testing
In the test mode, which can be activated by setting bit D7 of the I²C subaddress byte and bit
D0 of the testing audioprocessor byte, several internal signals are available at the SE1L pin.
In this mode, the input resistance of 100 kΩ is disconnected from the pin. Internal signals
available for testing are listed in the data-byte specification.
Figure 19. Test circuit
SE1L
SE1R
SE2L
SE2R
SE3L
SE3R
QD1L
QD1G
QD1R
FD1L+/QD2L/SE4L
FD1L-/QD2G/SE4R
FD1R-/QD2G/SE5L
FD1R+/QD2R/SE5R
100nF
100nF
100nF
100nF
100nF
100nF
100nF
22u
100nF
4.7u
4.7u
4.7u
4.7u
10uF
SE1L
SE1R
SE2L
SE2R
SE3L
SE3R
QD1L
QD1G
TSSOP28
QD1R
FD1L+/QD2L/SE4L
FD1L-/QD2G/SE4R
FD1R-/QD2G/SE5L
FD1R+/QD2R/SE5R
CREF
WnIn
DCErr
SDA
SCL
VCC
MUTE
WINTC
OUTLF
OUTLR
OUTRR
OUTRF
OUTSWL
OUTSWR
GND
100nF
10uF
4.7u
OUTLF
4.7u
OUTLR
4.7u
OUTRR
4.7u
OUTRF
4.7u
OUTSWL
4.7u
OUTSWR
Doc ID 16502 Rev 1
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