參數(shù)資料
型號(hào): STA003
英文描述: MPEG 2.5 LAYER III AUDIO DECODER
中文描述: 2.5第三層的MPEG音頻解碼器
文件頁(yè)數(shù): 19/32頁(yè)
文件大小: 299K
代理商: STA003
The Oversampling Factor (O_FAC) is related to OCLK and SCKT by the following expression:
1)
OCLK_freq = O_FAC * LRCKT_ Freq
(DAC relation)
2)
OCLK_ Freq = 2 * (1+PCMDIVIDER) * 32*
LRCKT_Freq (when 16 bit PCM mode is used)
3)
OCLK_ Freq = 2 * (1+PCMDIVIDER) * 64*
LRCKT_Freq (when 32 bit PCM mode is used)
4)
PCMDIVIDER = (O_FAC/64) - 1 in 16 bit mode
5)
PCMDIVIDER = (O_FAC/128) - 1 in 32 bit mode
Example for setting:
MSB
b7
PD7
0
0
0
0
0
0
LSB
b0
PD0
1
1
1
1
0
1
b6
PD6
0
0
0
0
0
0
b5
PD5
0
0
0
0
0
0
b4
PD4
0
0
0
0
0
0
b3
PD3
0
0
0
0
0
0
b2
PD2
1
1
0
0
0
0
b1
PD1
1
0
1
1
1
0
Description
16 bit mode
16 bit mode
16 bit mode
32 bit mode
32 bit mode
32 bit mode
512 x Fs
384 x Fs
256 x Fs
512 x Fs
384 x Fs
256 x Fs
for 16 bit PCM Mode
O_FAC = 512 ; PCMDIVIDER = 7
O_FAC = 256 ; PCMDIVIDER = 3
O_FAC = 384 ; PCMDIVIDER = 5
for 32 bit PCM Mode
O_FAC = 512 ; PCMDIVIDER = 3
O_FAC = 256 ; PCMDIVIDER = 1
O_FAC = 384 ; PCMDIVIDER = 2
STA003T
19/32
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