參數資料
型號： XRT83SL314IB-L
廠商： Exar Corporation
文件頁數： 20/83頁
文件大?。?/td> 0K
描述： IC LIU SH T1/E1/J1 14CH 304TBGA
標準包裝： 27
類型： 線路接口裝置（LIU）
驅動器/接收器數： 14/14
規(guī)程： T1，E1，J1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 304-LBGA
供應商設備封裝： 304-TBGA（31x31）
包裝： 托盤
xr
XRT83SL314
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.1
24
2.6.3.4
NLCD (Network Loop Code Detection)
The Network Loop Code Detection can be programmed to detect a Loop-Up, Loop-Down, or Automatic Loop
Code.
If the network loop code detection is programmed for Loop-Up, the NLCD will be set "High" if a
repeating pattern of "00001" occurs for more than 5 seconds.
If the network loop code detection is
programmed for Loop-Down, the NLCD will be set "High" if a repeating pattern of "001" occurs for more than 5
seconds. If the network loop code detection is programmed for automatic loop code, the LIU is configured to
detect a Loop-Up code.
If a Loop-Up code is detected for more than 5 seconds, the XRT83SL314 will
automatically program the channel into a remote loopback mode. The LIU will remain in remote loopback even
if the Loop-Up code disappears. The channel will continue in remote loop back until a Loop-Down code is
detected for more than 5 seconds (or, if the automatic loop code is disabled) and then automatically return to
normal operation with no loop back. The process of the automatic loop code detection is shown in Figure 15.
FIGURE 15. PROCESS BLOCK FOR AUTOMATIC LOOP CODE DETECTION
Automatic Remote
Loopback
Loop-Up
Code for
5 sec?
Yes
No
Loop-Down
Code for
5 sec?
No
Yes
Disable Remote
Loopback
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