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參數(shù)資料
型號: IDT82P2916BFG
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 127/138頁
文件大小: 0K
描述: IC LIU T1/E1/J1 16CH SH 484BGA
標準包裝: 84
功能: 線路接口單元(LIU)
接口: E1,J1,T1
電路數(shù): 16
電源電壓: 1.8V, 3.3V
功率(瓦特): 3.10W
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 484-LFBGA
供應商設備封裝: 484-CABGA(19x19)
包裝: 托盤
包括: AIS 警報檢測器和發(fā)生器,回送功能,PRBS 發(fā)生器 / 檢測器,遠程檢測器和發(fā)生器
IDT82P2916
16-CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
Programming Information
89
April 24, 2010
LOS - LOS Configuration Register
Address: 00DH, 04DH, 08DH, 0CDH, 10DH, 14DH, 18DH, 1CDH, (CH1~CH8)
20DH, 24DH, 28DH, 2CDH, 30DH, 34DH, 38DH, (CH9~CH15)
7CDH (CH0)
Type: Read / Write
Default Value: 15H
Bit
Name
Description
7
LAC
This bit selects the LLOS, SLOS and AIS criteria.
0: T1.231 (in T1/J1 mode) / G.775 (in E1 mode). (default)
1: I.431 (in T1/J1 mode) / ETSI 300233 & I.431 (in E1 mode).
6 - 4
ALOS[2:0]
These bits select the amplitude threshold (Q). When the amplitude of the data is less than Q Vpp for N consecutive pulse inter-
vals, LLOS is declared. The consecutive pulse intervals (N) are determined by the LAC bit (b7, LOS,...).
The ALOS[2:0] settings for Normal Receive mode and Line Monitor mode are different. Refer to below tables.
3 - 2
TALOS[1:0]
These bits select the amplitude threshold. When the amplitude of the data is less than the threshold for a certain period, TLOS is
declared. The period is determined by the TDLOS bits (b1~0, LOS,...). When the amplitude of a pulse is above the threshold,
TLOS is cleared.
For Differential line interface:
00: 1.2 Vp.
01: 0.9 Vp. (default)
10: 0.6 Vp.
11: 0.4 Vp.
For Single Ended line interface:
00: 0.61 Vp.
01: 0.48 Vp. (default)
10: 0.32 Vp.
11: 0.24 Vp.
765
43
21
0
LAC
ALOS2
ALOS1
ALOS0
TALOS1
TALOS0
TDLOS1
TDLOS0
ALOS[2:0] Setting in Normal Receive Mode
ALOS[2:0]
Q (Vpp)
vs. 6.0 Vpp (dB)
vs. 4.74 Vpp (dB)
000
0.5
21.58
19.54
001 (default)
0.7
18.66
16.61
010
0.9
16.48
14.43
011
1.2
13.98
11.93
100
1.4
12.64
10.59
101
1.6
11.48
9.43
110
1.8
10.46
8.41
111
2.0
9.54
7.49
ALOS[2:0] Setting in Line Monitor Mode
ALOS[2:0]
Q (Vpp)
vs. 6.0 Vpp (dB)
vs. 4.74 Vpp (dB)
000
1.0
15.56
13.52
001 (default)
1.4
12.64
10.59
010
1.8
10.46
8.41
011
2.2
8.71
6.67
1xx
reserved.
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