STV82X8 datasheet(36/157 Pages) STMICROELECTRONICS

Part #	STV82X8

Description	Digital Audio Decoder / Processor for BTSC Television/Video Recorders

PDF	157 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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I²S Interface (In / Out)

STV82x8

36/157

I²S Interface (In / Out)

6.1

I²S Inputs

6.1.1

I²S Inputs in TQFP 80 Package

The STV82x8 can interface with a digital sound decoder. In this case, the digital data can be input

at a speed of 0.384 Mbytes/s (3.072 MHz for a 48 kHz sampling frequency with 32 bits of data).

A Sample Rate Conversion (SRC) is necessary if input frequency is not 48 kHz (STV82x8 slave) in

order to obtain a fixed frequency output from this block (48 kHz).

Note:

The SRC function is only available in single I²S input mode.

The interface with one I²S connection (I2S_DATA0) enables the input of stereo or stereo-coded

Dolby

® Pro Logic®.

One interface with three I²S connections connected to the DSP enables the processing of a multi-

channel signal (maximum of 6 channels).

Figure 25: TQFP 80 I²S Input Block Diagram

Audio Processing

I2S_DATA0

I2S_DATA1

I2S_DATA2

fS Input = 32 to 48 kHz

fS Input = 48 kHz only

I2S_SCLK

I2S_LR_CLK

fS Input = 32 to 48 kHz

fS Input * 64

48 kHz DSP

Processing

STV82X8 Datasheet(PDF) 36 Page - STMicroelectronics