參數(shù)資料
型號: XRT83VSH314IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
中文描述: DATACOM, PCM TRANSCEIVER, PBGA304
封裝: 31 X 31 MM, 1.27 MM PITCH, PLASTIC, BGA-304
文件頁數(shù): 56/80頁
文件大?。?/td> 497K
代理商: XRT83VSH314IB
XRT83VSH314
53
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.1
T
ABLE
25: M
ICROPROCESSOR
R
EGISTER
0
X
01
H
B
IT
D
ESCRIPTION
C
HANNEL
0-13 (0
X
01
H
-0
X
D1
H
)
B
IT
N
AME
F
UNCTION
Register
Type
Default
Value
(HW reset)
D7
RxTSEL
Receive Termination Select
Upon power up, the receiver is in "High" impedance. RxTSEL is
used to switch between the internal termination and "High" imped-
ance.
0 = External Termination
1 = Internal Termination
R/W
0
D6
TxTSEL
Transmit Termination Select
Upon power up, the transmitter is in "High" impedance. TxTSEL is
used to switch between the internal termination and "High" imped-
ance.
0 = "High" Impedance
1 = Internal Termination
R/W
0
D5
D4
TERSEL1
TERSEL0
Receive Line Impedance Select
TERSEL[1:0] are used to select the line impedance for T1/J1/E1.
R/W
0
0
D3
D2
JASEL1
JASEL0
Jitter Attenuator Select
JASEL[1:0] are used to enable the jitter attenuator in the receive or
transmit path. By default, the jitter attenuator is disabled.
R/W
0
TERSEL1
TERSEL0
0
1
1
0
1
1
0
0
LINE IMPEDANCE
100
120
75
110
JASEL1
JASEL0
0
1
1
0
1
1
0
0
Disabled
Receive Path
Receive Path
Transmit Path
JA PATH
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