TDA7529 Datasheet, PDF (38/60 Pages) STMicroelectronics – RF front-end for AM/FM DSP car-radio with IF sampling

Registers description
TDA7529
6.1.3 GPIO mode (2)
Table 28. GPIO mode (2)
MSB
LSB
D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
Function
GPIO1 input / output
0 _{Analog input to AD converter}
1 ^{digital output}
GPIO2 input / output
0
Analog input to AD converter
1
Digital output
CP Current Switch
0
Automatic switch disabled
1
Automatic switch enabled
GPIO4 input / output
0
Analog Input
1
digital output
GPIO5 input / output
0
digital input
1
output (analog or digital)
0
1
0
1
GPIO6 input / output
digital input (or MISO output in SPI mode)
digital output (or MISO output in SPI mode)
GPIO7 input / output
FM AGC voltage output
Digital output
GPIO8 input / output
0
AM AGC voltage output
1
Digital output
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