TDA7501_07 Datasheet, PDF (23/29 Pages) STMicroelectronics – Line driver for digital car radio Signal processor (DSPLD)

TDA7501
Software specification for both modes
Table 13. Mode select (subaddress 5)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
Function
AM-IF rectifier gain
0
0 18dB
0
1 15.5dB
1
0 12dB
1
1 6dB
0
0
0
1
1
0
1
1
AM-IF rectifier corner frequency
14KHz
18.5KHz
28KHz
56KHz
backkground tuner select (internal AM-
path)
0
FM-in (MPX1)
1
AM-in (MPX2)
Dual MPX mode
0
on (control through Tuner- - voltage)
1
off
0
0
0
1
1
0
1
1
forced Dual MPX mode
MPX1 (allows automatic selection)
MPX2 (overwrites automatic selection)
MPX1+ MPX2 (overwrites automatic
selection)
MPX1 (overwrites automatic selection)
Table 14. Configuration (subaddress 6)
MSB
D7 D6 D5 D4 D3 D2 D1
0
1
01
01
01
LSB
D0
Function
output gain
0 0dB
1 +6dB
reference voltage setting for output
external reference / internal reference
(V33*1.25)
internal divider for output reference
voltage connected to VCC/2
disconnected
fast charge (switches at CD input)
open closed
Input level select (output
power)12dB6d0
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