TDA7529 Datasheet, PDF (49/60 Pages) STMicroelectronics – RF front-end for AM/FM DSP car-radio with IF sampling

TDA7529
Registers description
6.1.19 GPIO output level control (18 / 34)
Table 44. GPIO output level control (18 / 34)
MSB
LSB
D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
Function
GPIOx high / low output level
0 _{GPIO1 low}
1 _{GPIO1 high}
0
GPIO2 low
1
GPIO2 high
:
:
:
:
:
:
X
X
X
X
X
:
:
:
:
:
GPIOx low / high
:
0
GPIO8 low
1
GPIO8 high
6.1.20 IF control (19 / 35)
Table 45. IF control (19 / 35)
MSB
D₇ D₆ D₅ D₄ D₃ D₂
0
1
0
1
0
0
0
0
0
1
:
:
:
1
1
0
1
1
1
0
1
LSB
D₁ D₀
Function
X Not used
RC test
0
Test enabled
1
Test disabled
AMAGC input buffer
Buffer enabled
Buffer disabled
Mixer input selection for FM
FM1 mixer input
FM2 mixer input
IF amplifier Gain
25dB (input1-3) / 19dB (input4)
27dB (input1-3) / 21dB (input4)
:
37dB (input1-3) / 31dB (input4)
39dB (input1-3) / 33dB (input4)
IF input selection analog / IBOC
IBOC
Analog
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