TABLE 23: C" />
參數(shù)資料
型號: XRT83VSH28IB
廠商: Exar Corporation
文件頁數(shù): 55/75頁
文件大小: 0K
描述: IC LIU SH E1 OCTAL 225BGA
標準包裝: 84
類型: 線路接口裝置(LIU)
驅動器/接收器數(shù): 8/8
規(guī)程: T1,E1,J1
電源電壓: 3.14 V ~ 3.47 V
安裝類型: 表面貼裝
封裝/外殼: 225-BGA
供應商設備封裝: 225-BGA(19x19)
包裝: 托盤
XRT83VSH28
56
REV. 2.0.0
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
TABLE 23: CABLE LENGTH SETTING
EQC[4:0]
E1 MODE/RECEIVE SENSITIVITY
TRANSMIT LBO
CABLE
CODING
0x1Ch
E1 Short Haul/15dB
ITU G.703
75
Coax
HDB3
0x1Dh
E1 Short Haul/15dB
ITU G.703
120
TP
HDB3
TABLE 24: MICROPROCESSOR REGISTER 0X01H BIT DESCRIPTION
CHANNEL 0-7 (0X01H-0X71H)
BIT
NAME
FUNCTION
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 = "High" Impedance
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
Reserved
Reserved
R/W
0
D4
TERSEL
Receive Line Impedance Select
TERSEL is used to select the line impedance for E1.
"0" = 75
"1" = 120
R/W
0
D3
D2
JASEL1
JASEL0
Jitter Attenuator Select
JASEL[1:0] are used to select the jitter attenuator in the transmit or
receive path. By default, the jitter attenuator is disabled.
R/W
0
JASEL1
JASEL0
0
1
0
1
0
Disabled
Receive Path
Transmit Path
JA PATH
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