參數(shù)資料
型號(hào): STA013
廠商: 意法半導(dǎo)體
元件分類: 通用總線功能
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): 8/38頁(yè)
文件大?。?/td> 300K
代理商: STA013
R
C
C
XTI2DSPCLK
XTI2OCLK
X
S
N
M
PFD
CP
VCO
Switching
Circuit
OCLK
DCLK
Update FRAC
FRAC
XTI
Disable PLL
Figure 7.
PLL and Clocks Generation System
2.4 - PCM Output Interface
The decoded audio data are output in serial PCM
format. The interface consists of the following sig-
nals:
SDO PCM Serial Data Output
SCKT PCM Serial Clock Output
LRCLK Left/Right Channel Selection Clock
The output samples precision is selectable from
16 to 24 bits/word, by setting the output precision
with PCMCONF (16, 18, 20 and 24 bits mode)
register. Data can be output either with the most
significant bit first (MS) or least significant bit first
(LS), selected by writing into a flag of the
PCMCONF register.
Figure 8 gives a description of the several
STA013 PCM Output Formats.
The sample rates set decoded by STA013 is de-
scribed in Table 1.
LRCKT
SDO
SDO
PCM_FORMAT = 0
PCM_DIFF = 0
PCM_FORMAT = 1
PCM_DIFF = 1
32 SCLK Cycles
32 SCLK Cycles
32 SCLK Cycles
32 SCLK Cycles
32 SCLK Cycles
M
S
M
S
L
S
L
S
L
S
L
S
M
S
M
S
M
S
L
S
M
S
L
S
L
S
L
S
M
S
M
S
LRCKT
SDO
SDO
PCM_ORD = 1
PCM_PREC is 16 bit mode
PCM_ORD = 0
PCM_PREC is 16 bit mode
16 SCLK Cycles
16 SCLK Cycles
16 SCLK Cycles
16 SCLK Cycles
16 SCLK Cycles
M
S
M
S
L
S
L
S
L
S
L
S
M
S
M
S
M
S
L
S
M
S
L
S
L
S
L
S
M
S
M
S
SDO
PCM_FORMAT = 0
PCM_DIFF = 1
L
S
L
S
M
S
M
S
M
S
L
S
L
S
M
S
SDO
PCM_FORMAT = 1
PCM_DIFF = 1
L
S
L
S
M
S
M
S
M
S
L
S
L
S
M
S
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MSB
MSB
MSB
MSB
Figure 8.
PCM Output Formats
Table 1: MPEG Sampling Rates (KHz)
MPEG 1
48
44.1
32
MPEG 2
24
22.05
16
MPEG 2.5
12
11.025
8
STA013 - STA013B - STA013T
8/38
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STA013B 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MPEG 2.5 LAYER III AUDIO DECODER
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STA013B 13TR 功能描述:音頻 DSP MPEG Audio Decoder RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube