TDA7514 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TDA7514 Datasheet PDF : 74 Pages
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TDA7514
Table 69. SUBADDRESS 23: ISS Detector
MSB
D7 D6 D5 D4 D3 D2 D1
0
1
0
1
0
0
0
0
0
1
0
1
0
1
0
0
1
1
1
x
x
LSB
D0
0
1
FUNCTION
ISS Enable (active low)
ON
OFF
ISS filter ON/OFF manual control
OFF
ON
ISS Filter Bandwidth manual control
120 kHz
80 kHz
discharge current;charge current mid; narrow
1uA; 74uA; 124uA
3uA; 72uA; 122uA
5uA; 70uA; 120uA
9uA; 66uA; 116uA
15uA; 60uA; 110uA
not used
Table 70. SUBADDRESS 24: ISS Test
MSB
D7 D6 D5 D4 D3 D2
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
LSB
FUNCTION
D1 D0
ISS test muxer selector (test signal at pin
SMETERTC if bit7 byte17 tuner software is 1)
0
1 MPthreshold
1
0 ACNthreshold ("ac" threshold)
1
1 Dwthreshold ("dev" threshold)
0
0 Dthreshold ("dev+" threshold)
0
1 ACWthreshold ("ac+" threshold)
1
0 ac
1
1 MDSCO
0
0 ISS out
0
1 dev+
1
0 dev
1
1 refdev
0
0 DEMVout
output if bit 7 byte 28 tuner = 0
input if bit 7 byte 28 tuner = 1
ISS AC/MP test mode (pin SD)
Internal AC signal is connected to
QUALIDETECTOR AC input (normal mode)
Internal AC signal is output to pin SD (test mode)
QUALIDETECTOR AC input is driven by internal
AC signal (normal mode)
QUALIDETECTOR AC input is driven by pin SD
(test mode)
Internal MP signal is connected to
QUALIDETECTOR MP input (normal mode)
Internal MP signal is output to pin SD (test mode)
QUALIDETECTOR MP input is driven by internal
MP signal (normal mode)
QUALIDETECTOR MP input is driven by pin SD
(test mode)
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