参数资料
型号: MAS3587F
厂商: Electronic Theatre Controls, Inc.
元件分类: 通用总线功能
英文描述: MPEG Layer 3 Audio Encoder/Decoder
中文描述: MPEG层3音频编码器/解码器
文件页数: 38/83页
文件大小: 734K
代理商: MAS3587F
MAS 3587F
ADVANCE INFORMATION
38
Micronas
Table 3
8:
D0 Status Memory Cells
Memory
Address
Function
Name
D0:FD0
MPEG Frame Counter
All
bit[19:0]
number of MPEG frames after synchronization
The counter will be incremented with every new frame that is encoded/
decoded. With an invalid MPEG bit stream at its input while decoding (e.g. an
invalid header is detected), the MAS 3587F resets the MPEGFrameCount to
0
. In encoding mode, the counter is reset on audio data timeouts and after
restarting the encoder.
MPEGFrameCount
D0:FD1
MPEG Header and Status Information
All
bit[15]
reserved, must be set to zero
bit[14:13]
MPEG ID, Bits 12, 11 of the MPEG header
00
MPEG 2.5 (decoding only)
01
reserved
10
MPEG 2
11
MPEG 1
bit[12:11]
Bits 14 and 13 of the MPEG header
00
reserved
01
Layer 3
10
Layer 2 (decoding only)
11
Layer 1 (decoding only)
bit[10]
CRC Protection
0
1
bitstream protected by CRC
bitstream not protected by CRC
bit[9:2]
Reserved
bit[1]
CRC error (decoding only)
0
no CRC error
1
CRC error
bit[0]
Invalid frame (decoding only)
0
no invalid frame
1
invalid frame
This location contains bits 15...11 of the original MPEG header and other sta-
tus bits. It will be set each frame directly after the header has been encoded/
decoded from the bit stream.
MPEGStatus1
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