sta014t STMicroelectronics, sta014t Datasheet - Page 24
sta014t
Manufacturer Part Number
sta014t
Description
Mpeg 2.5 Layer Iii Audio Decoder With Adpcm And Srs Wowo Postprocessing Capability
Manufacturer
STMicroelectronics
Datasheet
1.STA014T.pdf
(45 pages)
- Current page: 24 of 45
- Download datasheet (437Kb)
STA014-STA014B-STA014T
The Oversampling Factor (O_FAC) is related to OCLK and SCKT by the following expression:
1) OCLK_freq = O_FAC * LRCKT_ Freq
2) OCLK_ Freq = 2 * (1+PCM_DIV) * 32*
3) OCLK_ Freq = 2 * (1+PCM_DIV) * 64*
4) PCM_DIV = (O_FAC/64) - 1 in 16 bit mode
5) PCM_DIV = (O_FAC/128) - 1 in 32 bit mode
Example for setting:
for 16 bit PCM Mode
O_FAC = 512 ; PCM_DIV = 7
O_FAC = 256 ; PCM_DIV = 3
O_FAC = 384 ; PCM_DIV = 5
24/45
MSB
(DAC relation)
LRCKT_Freq (when 16 bit PCM mode is used)
LRCKT_Freq (when 32 bit PCM mode is used)
PD7
b7
0
0
0
0
0
0
PD6
b6
0
0
0
0
0
0
PD5
b5
0
0
0
0
0
0
PD4
b4
0
0
0
0
0
0
PD3
b3
0
0
0
0
0
0
PD2
b2
1
1
0
0
0
0
for 32 bit PCM Mode
O_FAC = 512 ; PCM_DIV = 3
O_FAC = 256 ; PCM_DIV = 1
O_FAC = 384 ; PCM_DIV = 2
PD1
b1
1
0
1
1
1
0
LSB
PD0
b0
1
1
1
1
0
1
16 bit mode
16 bit mode
16 bit mode
32 bit mode
32 bit mode
32 bit mode
Description
512 x Fs
384 x Fs
256 x Fs
512 x Fs
384 x Fs
256 x Fs
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