STV82X7 datasheet(44/156 Pages) STMICROELECTRONICS

Part #	STV82X7

Description	Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

PDF	156 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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I²S Interface (In / Out)

STV82x7

44/156

6.2

I²S Output

A digital stereo output (I²S compatible) is also available for routing the demodulated signal or a

converted input audio signal to an external device. In this case, the I2S_DATA0 signal and all clock

signals are set as outputs by setting bit D6 in register RESET to 1.

The STV82x7 I²S drives the serial bus (SCLK, LR_CLK, I²S_DATA0) in master mode in 64.fs format

with a sampling frequency (fs) of 32 kHz. The I²S_PCM_CLK signal can be used as a master clock

in 512.fs format if required for the slave interface. Both standard and non-standard modes are

available, see Figure 29.

Note:

The I²S input and output modes are exclusive (this means that the I2S_DATA0 can be used as input

or as output).

Figure 27: TQFP 80 I²S Output Block Diagram

Figure 28: I²S Output Selection

Audio Processing

I2S_DATA0

fS Output = 32 kHz

I2S_SCLK

I2S_LR_CLK

fS Output = 32 kHz

fS Output * 64

48 kHz DSP

Processing

I2S_PCM_CLK

fS Output * 512

Output

C/Sub

Output

Srnd/HP

Output

SCART

Output

I2S_DATA0

STV82X7 Datasheet(PDF) 44 Page - STMicroelectronics