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: 34/60页
文件大小: 867K
代理商: MAS3507D
MAS 3507D
PRELIMINARY DATA SHEET
34
Micronas
3.7.1.6. Ancillary Data
This memory field contains the ancillary data. It is organized in words 16 bit each. The last ancillary bit transmitted in
a frame is placed at bit 0 in D0:$305. The position of the first ancillary data bit is locatable via the content of Number-
OfAncillaryBits.
An example: 17 bits ancillary data in a frame:
A possible ‘
read ancillary data
’ algorithm would read the NumberOfAncillaryBits and the complete ancillary data
area using the telegram:
<$3a><$68><$31><$1e> (offset=4, n=30)
<$3a><$69><$3b><receive 30 16-bit words>
For reducing the I
2
C protocol transfer traffic, it may be useful to split up the ‘read ancillary data’ algorithm into a first
part that reads NumberOfAncillaryBits and a second that reads only NumberOfAncillaryBits/16+1 words.
Address
Offset
R/W
Name
Function
D0:$305 ...
D0:$321
5
r
AncillaryData
organized in words a 16 bit (MSB first)
Table 3–13:
Ancillary data bit assignment
D0: $305
15 MSB
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00 LSB
ancillary data
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
bit 8
bit 9
bit 10
bit 11
bit 12
bit 13
bit 14
bit 15
bit 16
Table 3–14:
Ancillary data bit assignment
D0: $306
15 MSB
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00 LSB
ancillary data
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
bit 0
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