参数资料
型号: MAS3507D
厂商: MICRONAS SEMICONDUCTOR HOLDING AG
元件分类: 通用总线功能
英文描述: MPEG 1/2 Layer 2/3 Audio Decoder
中文描述: 的MPEG 1 / 2 2 / 3层音频解码器
文件页数: 30/60页
文件大小: 867K
代理商: MAS3507D
MAS 3507D
PRELIMINARY DATA SHEET
30
Micronas
3.7. Memory Area
3.7.1. Status Memory
The memory cells given in the following table should be accessed by the ‘read control interface data’ I
2
C command
(see Section 3.3.2. on page 21) because only the 16 LSBs of these memory blocks are used. The memory area
table is a consecutive memory block in the D0 memory that keeps all important status information that monitors the
MPEG decoding process. The ‘read control interface data’ command resets the MPEG-FRAME-SYNC at PI4
as
described in Section 2.9.
3.7.1.1. MPEG Frame Counter
The counter will be incremented with each new frame that is decoded. With an invalid MPEG bit stream as its input
(e.g. if an invalid header is detected), the MAS 3507D resets the MPEGFrameCount cell to ‘0’. The MPEGFrame-
Count is also returned by the ‘default read’ command as described in Section 3.3.9.
Table 3–10:
Status Memory Area
Address
Offset
1)
R/W
Name
Function
D0:$300
0
r
MPEGFrameCount
counts the MPEG frames
D0:$301
1
r
MPEGStatus1
MPEG header / status information
D0:$302
2
r
MPEGStatus2
MPEG header
D0:$303
3
r
CRCErrorCount
counts CRC errors during MPEG decoding
D0:$304
4
r
NumberOfAncillaryBits
number of bits in ancillary data
D0:$305
... $321
5
r
AncillaryData
organized in words a 16 bit (MSB first)
1) Offset applies to the ‘read control interface data’ command
Address
Offset
R/W
Name
Function
D0:$300
0
r
MPEGFrameCount
counts the MPEG frames
相关PDF资料
PDF描述
MAS3559F MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS35x9F MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
MAS3509F MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec
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
相关代理商/技术参数
参数描述
MAS3509F 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
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