STA680 datasheet(15/43 Pages) STMICROELECTRONICS

15 / 43 page

STA680

I/O description

15/43

I2S audio input interface

AUDIO_IN_AWS

input

1.8 V or 3.3 V

Generic IO

Supply

Digital audio input word strobe

AUDIO_IN_ABCK

input

1.8 V or 3.3 V

Generic IO

Supply

Digital audio input bit clock

AUDIO_IN_ADAT

input

1.8 V or 3.3 V

Generic IO

Supply

Digital audio input serial data

Audio output interfaces

AWS

in/out

1.8 V or 3.3 V

Generic IO

Supply

Digital audio output word strobe

ABCK

in/out

1.8 V or 3.3 V

Generic IO

Supply

Digital audio output clock

ADAT

output 1.8 V or 3.3 V

Generic IO

Supply

Digital audio output serial data

ADAT2

output 1.8 V or 3.3 V

Generic IO

Supply

Digital audio output serial data

channel 2

ADAT3

output 1.8 V or 3.3 V

Generic IO

Supply

Digital audio output serial data

channel 3

SPDIF

output 1.8 V or 3.3 V

Generic IO

Supply

Digital audio output in SPDIF

format

BLEND

output 1.8 V or 3.3 V

Generic IO

Supply

Digital audio output blend output

DAC256X

output 1.8 V or 3.3 V

Generic IO

Supply

Digital audio output

oversupplying clock (256 x Fs)

Clock and oscillator

CLK_IN

input

1.8 V or 3.3 V

Generic IO

Supply

Reference digital clock

OSC_IN

analo

1.8 V

Osc

Supply

28,224MHz crystal in or digital

clock input

OSC_OUT

analo

1.8 V

Osc

Supply

Crystal output

SPI Flash interface

SPI2_MISO

input

1.8 V or 3.3 V

Flash IO

Supply

SPI interface 2 serial data master

in/slave out

SPI2_MOSI

output 1.8 V or 3.3 V

Flash IO

Supply

SPI interface 2 serial data master

out/slave in

SPI2_SS0_N

output 1.8 V or 3.3 V

Flash IO

Supply

SPI interface 2 active-low slave

select 0

Not

bonded

SPI2_SS1_N

output 1.8 V or 3.3 V

Flash IO

Supply

SPI interface 2 active-low slave

select 1

Table 2.

Pins description (continued)

Pin #

Ball #

Signal name

Type

Electrical

Supply

group

Description

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