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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： | 33/83页 |
| 文件大小： | 734K |
| 代理商： | MAS3587F |
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ADVANCE INFORMATION
MAS 3587F
Micronas
33
Table 3
–
6:
Application Control and Status
Memory
Address
(hex)
Function
Name
D0:7f6
Application Selection
All
AppSelect is used for selecting an application. This is done by setting the
appropriate bit to one. It is principally allowed to set more than one bit to one,
e.g. setting AppSelect to 0xc will select all MPEG audio decoders. The auto-
detection feature will automatically detect the Layer 2 or Layer 3 data. When
bit[0]/bit[1] are asserted, the DSP begins to loop inside the OS loop/Top Level
loop respectively.
It is recomended to perform the necessary settings for the firmware before the
application is started by writing this memory cell.
bit[6]
bit[3]
bit[2]
bit[1]
bit[0]
MPEG Layer 3 Encoder
MPEG Layer 3 Decoder
MPEG Layer 2 Decoder
Top Level
Operating System
AppSelect
D0:7f7
Application Running
All
The AppRunning cell is a global user interface status cell, that indicates which
application loop is actually running. After writing AppSelect, it has to be
checked whether the appropriate bit(s) in the AppRunning cell is set, prior to
any changes in the configuration registers or memory cells
bit[6]
bit[3]
bit[2]
bit[1]
bit[0]
MPEG Layer 3 Encoder
MPEG Layer 3 Decoder
MPEG Layer 2 Decoder
Top Level
Operating System
AppRunning
D0:7f0
Encoder Control
(reset = a0264
hex
)
EncoderControl is used for selecting the quality level, sample frequency and
other options for encoding.
Encoder
bit[19:17]
Quality Setting
000
001
010
011
100
101 (reset) 5 recommended quality
The maximum bitrate is limited to 192 kbit/s,
whereas the average bitrate highly depends on the
audio source. At the recommanded quality
setting and a sampling rate of 44.1 kHz, the average
bitrate is typically found in the range from 130 to
140 kBit/s.
110
6
111
7 highest bitrate / quality
0 lowest bitrate / quality
1
2
3
4
bit[16:12]
Reserved, must be set to zero
...
EncoderControl
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|---|---|
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| MAS9090BS-T | LOW VOLTAGE 14-BIT LINEAR CODEC |
| MAS9090B | LOW VOLTAGE 14-BIT LINEAR CODEC |
| MAS9090BJ | LOW VOLTAGE 14-BIT LINEAR CODEC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAS35X9F | 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 |
| MAS36 | 制造商:CUI 制造商全称:CUI INC 功能描述:Incremental Encoder |
| MAS36-256-N5 | 功能描述:ENCODER OPT 46MM ABS BIN 256PPR RoHS:是 类别:传感器，转换器 >> 编码器 系列:MAS36 产品目录绘图:OPE Series Panel Mount 标准包装:1 系列:OPE 编码器类型:光学 输出类型:正交（增量） 每转脉冲:256 电源电压:5VDC 触动器类型:1/4 英寸直径扁平端头 锁销:无 内置开关:无 安装类型:面板安装 方向:垂直 端接类型:端子引脚 回转寿命（最小循环):- 产品目录页面:2569 (CN2011-ZH PDF) 相关产品:OPEDAS0256-ND - ENCODER 256PPR DISK ASSY SHAFT 其它名称:365-1542 |
| MAS3690CC | 制造商:DYNEX 制造商全称:Dynex Semiconductor 功能描述:1553B Bus Controller/Remote Terminal |
| MAS3690CD | 制造商:DYNEX 制造商全称:Dynex Semiconductor 功能描述:1553B Bus Controller/Remote Terminal |
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