I²S Interface (In / Out)
6 I²S Interface (In / Out)
STV82x8
6.1 I²S Inputs
6.1.1
Note:
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).
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
I2S_DATA0
fS Input = 32 to 48 kHz
I2S_DATA1
fS Input = 48 kHz only
I2S_DATA2
fS Input = 48 kHz only
I2S_SCLK
fS Input * 64
I2S_LR_CLK
fS Input = 32 to 48 kHz
Audio Processing
48 kHz DSP
Processing
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