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STA335BWSQS Datasheet(PDF) 25 Page - STMicroelectronics

Part # STA335BWSQS
Description  2.1-channel, high-efficiency digital audio system with QSound QHD®
PDF  70 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA335BWSQS Datasheet(HTML) 25 Page - STMicroelectronics

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STA335BWSQS
Register description
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6.1
Configuration register A (addr 0x00)
6.1.1
Master clock select
The STA335BWSQS supports sample rates of 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz,
176.4 kHz, and 192 kHz. Therefore the internal clock is:
"
32.768 MHz for 32 kHz
"
45.1584 MHz for 44.1 kHz, 88.2 kHz, and 176.4 kHz
"
49.152 MHz for 48 kHz, 96 kHz, and 192 kHz
The external clock frequency provided to the XTI pin must be a multiple of the input sample
frequency (fs).
The relationship between the input clock and the input sample rate is determined by both
the MCSx and the IR (input rate) register bits. The MCSx bits determine the PLL factor
generating the internal clock and the IR bit determines the oversampling ratio used
internally
D7
D6
D5
D4
D3
D2
D1
D0
FDRB
TWAB
TWRB
IR1
IR0
MCS2
MCS1
MCS0
01
10
001
1
Table 9.
MCS
Bit
RW
RST
Name
Description
0RW
1
MCS0
Selects the ratio between the input I2S sample
frequency and the input clock.
1RW
1
MCS1
2RW
0
MCS2
Table 10.
Input sampling rates
Input sample rate
fs (kHz)
IR
MCS[2:0]
101
100
011
010
001
000
32, 44.1, 48
00
576fs
128fs
256fs
384fs
512fs
768fs
88.2, 96
01
NA
64fs
128fs
192fs
256fs
384fs
176.4, 192
1X
NA
32fs
64fs
96fs
128fs
192fs



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