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參數資料
| 型號： | MT93L04AG2 |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 數字傳輸電路 |
| 英文描述： | 128-Channel Voice Echo Canceller |
| 中文描述： | DATACOM, ISDN ECHO CANCELLER, PBGA365 |
| 封裝： | 27 X 27 MM, 2.33 MM HEIGHT, LEAD FREE, MS-034, BGA-365 |
| 文件頁數： | 30/56頁 |
| 文件大?。?/td> | 903K |
| 代理商： | MT93L04AG2 |
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MT93L04
Data Sheet
30
Zarlink Semiconductor Inc.
Figure 7 - Memory Mapping of per channel Control and Status Registers
Memory Mapped Control and Status registers
Internal memory and registers are memory mapped into the address space of the HOST interface. The internal dual
ported memory is mapped into segments on a “per channel” basis to monitor and control each individual echo
canceller and associated PCM channels. For example, in Normal configuration, echo canceller #5 makes use of
Echo Canceller B from group 2. It occupies the internal address space from 0A0h to 0BFh and interfaces to PCM
channel #5 on all serial PCM I/O streams.
As illustrated in Figure 7, the “per channel” registers provide independent control and status bits for each echo
canceller. Figure 8 shows the memory map of the control/status register blocks for all echo cancellers.
When Extended Delay or Back-to-Back configuration is selected, Control Register A1/B1 and Control Register 2 of
the selected group of echo cancellers require special care. Refer to the Register description section.
00h
Control Reg A1
01h
Decay Step Size Reg
02h
03h
Base
Addr +
Echo Canceller A
04h
06h
Reserved
Flat Delay Reg
Control Reg 2
Status Reg
Reserved
05h
Control Reg A3
08h
Decay Step Number
07h
Control Reg A4
09h
Rin Peak Detect Reg
0Ch
Sin Peak Detect Reg
0Eh
Error Peak Detect Reg
10h
Reserved
12h
DTDT Reg
14h
Reserved
16h
NLPTHR
18h
Step Size, MU
1Ah
Reserved
1Ch
Reserved
1Eh
20h
Control Reg B1
21h
Decay Step Size Reg
22h
23h
24h
26h
Reserved
Flat Delay Reg
Control Reg 2
Status Reg
Reserved
25h
Control Reg B3
28h
Decay Step Number
27h
Control Reg B4
29h
Rin Peak Detect Reg
2Ch
Sin Peak Detect Reg
2Eh
Error Peak Detect Reg
30h
Reserved
32h
DTDT Reg
34h
Reserved
36h
NLPTHR
38h
Step Size, MU
3Ah
Reserved
3Ch
Reserved
3Eh
Base
Addr +
Echo Canceller B
Noise Scaling
0Ah
Injection Rate
0Bh
Noise Scaling
2Ah
Injection Rate
2Bh
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