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參數(shù)資料
| 型號： | ZL50233/GDG |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | DATACOM, ISDN ECHO CANCELLER, PBGA208 |
| 封裝： | 17 X 17 MM, 1.30 MM HEIGHT, MO-192, LBGA-208 |
| 文件頁數(shù)： | 8/38頁 |
| 文件大?。?/td> | 547K |
| 代理商： | ZL50233/GDG |
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ZL50233
Data Sheet
16
Zarlink Semiconductor Inc.
6.0
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 #3 makes use of
Echo Canceller B from group 2. It occupies the internal address space from 060hex to 07Fhex and interfaces to PCM
channel #3 on all serial PCM I/O streams.
As illustrated in Table 3, the “per channel” registers provide independent control and status bits for each echo
canceller. Figure 10 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 1 of ECA and ECB and Control
Register 2 of the selected group of echo cancellers require special care. Refer to the Register description section.
Table 4 is a list of the channels used for the 16 groups of echo cancellers when they are configured as Extended
Delay or Back-to-Back.
6.1
Normal Configuration
For a given group (group 0 to 1), 2 PCM I/O channels are used. For example, group 1 Echo Cancellers A and B,
channels 2 and 3 are active.
6.2
Extended Delay Configuration
For a given group (group 0 or 1), only one PCM I/O channel is active (Echo Canceller A) and the other channel
carries quiet code. For example, group 0, Echo Canceller A (Channel 0) will be active and Echo Canceller B
(Channel 1) will carry quiet code.
6.3
Back-to-Back Configuration
For a given group (group 0 or 1), only one PCM I/O channel is active (Echo Canceller A) and the other channel
carries quiet code. For example, group 1, Echo Canceller A (Channel 2) will be active and Echo Canceller B
(Channel 3) will carry quiet code.
Group
Channels
00, 1
12, 3
Table 4 - Group and Channel allocation
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ZL50233QC | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:4 Channel Voice Echo Cancellor |
| ZL50233QCC | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:4 Channel Voice Echo Cancellor |
| ZL50233QCG1 | 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 4-CH G.165/G.168/G.711 W/ TONE DETECTION - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC VOICE ECHO CANCEL 4CH 100LQFP 制造商:Microsemi Corporation 功能描述:IC VOICE ECHO CANCEL 4CH 100LQFP |
| ZL50234 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:8 Channel Voice Echo Canceller |
| ZL50234/GDC | 制造商:Microsemi Corporation 功能描述:ECHO Canceller Chip 8-CH G.164/G.165/G.168/G.711 With Tone Detection 208-Pin LBGA Tray 制造商:Microsemi Corporation 功能描述:ECHO CANCELLER CHIP 8CH G.164/G.165/G.168/G.711 W/ TONE DETE - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC VOICE ECHO CANCEL 8CH 208LBGA 制造商:Microsemi Corporation 功能描述:IC VOICE ECHO CANCEL 8CH 208LBGA |
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