参数资料
型号: MAS3509F
厂商: MICRONAS SEMICONDUCTOR HOLDING AG
元件分类: Codec
英文描述: MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
中文描述: 新加坡金融管理局35x9F的MPEG 2 / 3层,AAC音频解码器,G.729的附件A编解码器
文件页数: 42/92页
文件大小: 1186K
代理商: MAS3509F
MAS 35x9F
DATA SHEET
42
June 30, 2004; 6251-505-1DS
Micronas
D0:FD2
(continued)
MPEG Header Information, continued
bit[11:10]
Sampling frequencies in Hz
MPEG1
MPEG2
MPEG2.5
00
01
10
11
44100
48000
32000
reserved
22050
24000
16000
reserved
11025
12000
8000
reserved
bit[9]
Padding Bit
bit[8]
reserved
bit[7:6]
Mode
00
01
10
11
stereo
joint_stereo (intensity stereo / m/s stereo)
dual channel
single channel
bit[5:4]
Mode extension (applies to joint stereo only)
intensity stereo
off
on
off
on
m/s stereo
off
off
on
on
00
01
10
11
bit[3]
Copyright Protect Bit
0/1
not copyright protected/copyright protected
bit[2]
Copy/Original Bit
0/1
bitstream is a copy/bitstream is an original
bit[1:0]
Emphasis, indicates the type of emphasis
00
none
01
50/15
μ
s
10
reserved
11
CCITT J.17
This memory cell contains the 16 LSBs of the MPEG header. It will be set
directly after synchronizing to the bit stream.
Note that for AAC four bits are needed to define the sampling frequency while
for Layer2/Layer3 two bits are sufficient. This leads to an inconsistency in the
format of bits 13...10.
MPEGStatus2
D0:FD3
MPEG CRC Error Counter
The counter will be increased by each CRC error detected in the MPEG bis-
stream. It will not be reset when losing the synchronization.
CRCErrorCount
D0:FD4
Number of Bits in Ancillary Data
Number of valid ancillary bits in the current MPEG frame.
NumberOfAncillary-
Bits
D0:FD5
...
D0:FF1
Ancillary Data
(see Section 3.3.6. on page 43).
AncillaryData
Table 3–11:
D0 status memory cells, continued
Memory
Address
Function
Name
相关PDF资料
PDF描述
MAS3519F MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3529F MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3539F MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3549F MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3587F MPEG Layer 3 Audio Encoder/Decoder
相关代理商/技术参数
参数描述
MAS3519F 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3529F 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3539F 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3549F 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3559F 制造商:MICRONAS 制造商全称:MICRONAS 功能描述:MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec