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MT91L61 参数 Datasheet PDF下载

MT91L61图片预览
型号: MT91L61
PDF下载: 下载PDF文件 查看货源
内容描述: ISO2 - CMOS 3伏多功能的编解码器( MFC) [ISO2-CMOS 3 Volt Multi-Featured Codec (MFC)]
分类和应用: 解码器编解码器
文件页数/大小: 32 页 / 148 K
品牌: MITEL [ MITEL NETWORKS CORPORATION ]
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Advance Information  
MT91L60/61  
C-Channel Register  
ADDRESS = 05h WRITE/READ  
Power Reset Value  
1111 1111- write  
XXXX XXXX - read  
C7  
7
C6  
6
C5  
5
C4  
4
C3  
3
C2  
2
C1  
1
C0  
0
Micro-port access to the ST-BUS C-Channel information read and write  
D-Channel Register  
ADDRESS = 06h WRITE/READ  
Power Reset Value  
1111 1111- write  
XXXX XXXX - read  
D7  
7
D6 D5  
D4  
D3  
3
D2  
2
D1  
D0  
6
5
4
1
0
D7-D0  
Data written to this register will be transmitted every frame, in channel 0, if the DEn control bit is set (address 04h).  
Received D-Channel data is valid, regardless of the state of DEn. These bits are valid for ST-BUS mode only and are  
accessible only when IRQ indicates valid access.  
ADDRESS = 07h WRITE/READ VERIFY  
Loopback Register  
Power Reset Value  
XXXX 0000  
PCM/  
-
-
-
-
loopen  
-
-
ANALOG  
7
6
5
4
3
2
1
0
PCM/ANALOG This control bit functions only when loopen is set high. It is ignored when loopen is low.  
For loopback operation when this bit is high, the device is configured for digital-to-digital loopback operation. Data on  
Din is looped back to Dout without conversion to the analog domain. However, the receive D/A path (from Din to  
HSPKR ±) still functions. When low, the device is configured for analog-to-analog operation. An analog input signal at  
M± is looped back to the SPKR± outputs through the A/D and D/A circuits as well as through the normal transmit A/D  
path (from M± to Dout).  
loopen  
When high, loopback operation is enabled and the loopback type is governed by the state of the PCM/ANALOG bit.  
When low, loopbacks are disabled, the device operates normally and the PCM/ANALOG bit is ignored.  
HSPKR +/-  
Din  
HSPKR +/-  
Dout  
Dout  
M +/-  
Analog Loopback  
PCM/ANALOG = 0 loopen = 1  
Digital Loopback  
PCM/ANALOG = 1 loopen = 1  
Figure 10 - Loopback Signal Flow  
Note: Bits marked "-" are reserved bits and should be written with logic "0"  
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