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| 型号： | IDT82P2828BHG |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 106/154页 |
| 文件大小： | 0K |
| 描述： | IC LIU T1/J1/E1 28+1CH 640-PBGA |
| 标准包装： | 5 |
| 类型： | 线路接口装置（LIU） |
| 规程： | E1 |
| 电源电压： | 3.13 V ~ 3.47 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 640-BGA 裸露焊盘 |
| 供应商设备封装： | 640-PBGA-EP（31x31） |
| 包装： | 托盘 |
| 其它名称： | 82P2828BHG |
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IDT82P2828
28(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
Functional Description
55
February 6, 2009
3.5.8.2 Remote Loopback
Remote Loopback can be configured manually or automatically.
Either manual Remote Loopback configuration or automatic Remote
Loopback configuration will enable Remote Loopback.
Manual Remote Loopback is enabled by the RLP bit (b1, LOOP,...).
Automatic Remote Loopback is enabled when the pattern detection
is assigned in the receive path (i.e., the PD_POS bit (b3, PD,...) is ‘0’)
and the AUTOLP bit (b3, LOOP,...) is ‘1’. The corresponding channel will
enter Remote Loopback when the activate IB code is detected in the
receive path for more than 5.1 sec.; and will return from Remote Loop-
back when the deactivate IB code is detected in the receive path for
more than 5.1 sec. Refer to section Inband Loopback (IB) Detection on
page 50 for details. When automatic Remote Loopback is active, setting
the AUTOLP bit (b3, LOOP,...) back to ‘0’ will also stop automatic
Remote Loopback. The setting of the PD_POS bit (b3, PD,...) should not
be changed during automatic Remote Loopback. The AUTOLP_S bit
(b7, STAT0,...) indicates the automatic Remote Loopback status.
In Remote Loopback mode, the data stream output from the RJA (if
enabled) is internally looped to the Waveform Shaper. The data stream
received from the line side is still output to the system side, while the
data stream input from the system side is covered by the Remote Loop-
back data and the status on TCLKn does not affect the Remote Loop-
back. However, the BPV/CV, EXZ, SLOS, AIS and pattern detection in
the transmit path still monitors the data stream input from the system
side.
In Remote Loopback mode, the priority of the diagnostic facilities in
the receive path is: pattern generation > AIS generation; the priority of
the diagnostic facilities in the transmit path is: pattern generation >
looped data. AIS generation is disabled in the transmit path. Refer to
Figure-33 Priority Of Diagnostic Facilities During Manual Remote Loopback
Tx path
BPV/CV, EXZ, SLOS,
AIS, pattern detection
Pattern generation
AIS generation
X
Rx path
LLOS, AIS
detection
AIS generation
BPV/CV, EXZ,
pattern detection
Pattern generation
Remote
Loopback
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相关代理商/技术参数 |
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| IDT82P2916 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:16-Channel High-Density T1/E1/J1 Line Interface Unit |
| IDT82P2916BFG | 功能描述:IC LIU T1/E1/J1 16CH SH 484BGA RoHS:是 类别:集成电路 (IC) >> 接口 - 电信 系列:- 产品培训模块:Lead (SnPb) Finish for COTS 产品变化通告:Product Discontinuation 06/Feb/2012 标准包装:750 系列:* |
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