STV8287D View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STV8287D
STMicroelectronics
'STV8287D' PDF : 149 Pages View PDF
I²S Interface (In / Out)
6 I²S Interface (In / Out)
STV82x7
The STV82x7 offers three input/output choices: one I²S input, three I²S inputs or one I²S output.
6.1 I²S Inputs
The STV82x7 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).In
compliance with Dolby® specifications, only the sampling frequency is subject to restrictions. All
other requirements are extracted from other various specifications.
Table 5: I²S Characteristics
Sampling Frequency (kHz)
8, 11.025, 12,16, 22.05, 24, 32, 44.1 and 48
Data Size
16, 18*, 20*, 24*, 32
PCMCLK
512 x fS1 2
1. means that the number is the number of effective bits but the transmission is with 32 bits.
2. 512 x fs is used by the DACs if 512 x fs is present.
Note:
The PCMCLK (possible clock for upsampling) is provided by the master which is the digital sound
decoder. A sample rate conversion (SRC) will be necessary in the second case (STV82x7 slave) in
order to have a fixed frequency output from this block (either 32 kHz, 44.1 kHz or 48 kHz).
The SRC function is only available in single I²S input mode.
The I²S interface is used in two ways depending on the package:
1. The interface with one I²S (I²S_DATA0) connection (only stereo or stereo-coded Dolby® Pro
Logic®);
2. One interface with three I²S connections connected to the DSP to allow the processing of a
multi-channel signal (maximum of 6 channels).
Figure 25: I²S Block Diagram
I²S_DATA0
fS Input = 8 to 48 kHz
I²S_DATA1
fS Input = 32 to 48 kHz
I²S_DATA2
fS Input = 32 to 48 kHz
40/149
SRC x 2
SRC x 4
Audio Processing
Share Link: 