TDA7705_10 Datasheet, PDF (8/42 Pages) STMicroelectronics – Highly integrated tuner for AM/FM car radio

Block diagram and pins description
Table 2. Pin description (continued)
Pin #
Pin name
Function
17 LNAdec
18 LNAout
19 LNAin2
20 LNAout2
21 LNAdec2
22 AMMIXin2
23 AMMIXin1
24 AMMIXdec
AM LNA decoupling
AM LNA output first stage
AM LNA input 2^nd stage
AM LNA output
AM LNA decoupling 2^nd stage
AM mixer input 2
AM mixer input 1
AM mixer decoupling
25 GND-IF
26 VREF165
27 VREFdec
28 GND-DIG
IF and Vref GND
1.65V reference voltage decoupling
3.3V reference voltage decoupling
Digital GND
29 VCC-DIG
30 VCCreg1V2
31 REG1V2
32 VDD-3V3
33 GND-3V3
5V supply for digital logic
VCC of 1.2V regulator
1.2V regulator output
3.3V VDD output / decoupling
3.3V VDD GND
34 SPI_CS
SPI chip select
35 SPI_MISO
SPI Data output
36 SDA / SPI_MOSI I²C bus data / SPI data input
37 SCL / SPI_CLK I²C bus Clock / SPI clock
38 VDD-1V2
39 RDSINT
40 GPIO3
41 GPIO2
42 GPIO 1
1.2V DSP supply
RDS interrupt
Reserved
Reserved
Reserved
43 GPIO 0
44 MODE
45 RSTN
46 TEST
Reserved
For debug purpose only, connected to GND
Reset pin (active low)
Test input
47 VDD-1V2
48 GND-1V2
49 VCC-DAC
50 OSCout
51 OSCin
1.2V DSP supply
Digital GND for 1.2V VDD
5V supply of audio DAC
Xtal osc output
Xtal osc input
8/42
Doc ID 15938 Rev 8
TDA7705