TDA7705 datasheet(8/42 Pages) STMICROELECTRONICS

8 / 42 page

Block diagram and pins description

TDA7705

8/42

Doc ID 15938 Rev 9

LNAdec

AM LNA decoupling

LNAout

AM LNA output first stage

LNAin2

AM LNA input 2nd stage

LNAout2

AM LNA output

LNAdec2

AM LNA decoupling 2nd stage

AMMIXin2

AM mixer input 2

AMMIXin1

AM mixer input 1

AMMIXdec

AM mixer decoupling

GND-IF

IF and Vref GND

VREF165

1.65V reference voltage decoupling

VREFdec

3.3V reference voltage decoupling

GND-DIG

Digital GND

VCC-DIG

5V supply for digital logic

VCCreg1V2

VCC of 1.2V regulator

REG1V2

1.2V regulator output

VDD-3V3

3.3V VDD output / decoupling

GND-3V3

3.3V VDD GND

SPI_CS

SPI chip select

SPI_MISO

SPI Data output

SDA / SPI_MOSI I2C bus data / SPI data input

SCL / SPI_CLK

I2C bus Clock / SPI clock

VDD-1V2

1.2V DSP supply

RDSINT

RDS interrupt

GPIO3

Reserved

GPIO2

Reserved

GPIO 1

Reserved

GPIO 0

Reserved

MODE

For debug purpose only, connected to GND

RSTN

Reset pin (active low)

TEST

Test input

VDD-1V2

1.2V DSP supply

GND-1V2

Digital GND for 1.2V VDD

VCC-DAC

5V supply of audio DAC

OSCout

Xtal osc output

OSCin

Xtal osc input

Table 2.

Pin description (continued)

Pin #

Pin name

Function

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