參數(shù)資料
型號: XRT83VSH316IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
中文描述: DATACOM, PCM TRANSCEIVER, PBGA316
封裝: 21 X 21 MM, STBGA-316
文件頁數(shù): 79/96頁
文件大?。?/td> 600K
代理商: XRT83VSH316IB
PRELIMINARY
16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83VSH316
77
REV. P1.0.3
T
ABLE
45: M
ICROPROCESSOR
R
EGISTER
0
X
N02
H
B
IT
D
ESCRIPTION
C
HANNEL
N (0
X
N02
H
)
B
IT
N
AME
F
UNCTION
Register
Type
Default
Value
(HW reset)
D7
INVQRSS
QRSS inversion
INVQRSS is used to invert the transmit QRSS or PRBS pattern set
by the TxTEST[2:0] bits. By default (bit D7=0), INVQRSS is dis-
abled for PRBS and enabled for QRSS.
0 = Disabled for PRBS
0 = Enabled for QRSS
1 = Disabled for QRSS
1 = Enabled for PRBS
R/W
0
D6
D5
D4
TxTEST2
TxTEST1
TxTEST0
Test Code Pattern
TxTEST[2:0] are used to select a diagnostic test pattern to the line
side (transmit outputs). If these bits are selected, the LIU is auto-
matically placed in single rail mode.
0XX = No Pattern
100 = Tx QRSS
101 = Tx TAOS
110 = Tx LOS (All Zeros)
111 = Reserved
R/W
0
0
0
D3
TxOn
Transmit ON/OFF
Upon power up, the transmitters are powered off. This bit is used
to turn the transmitter for this channel On or Off if the TxON pin is
pulled "High". If the TxON pin is pulled "Low", all 16 transmitters
are powered off.
0 = Transmitter is Powered OFF
1 = Transmitter is Powered ON
R/W
0
D2
D1
D0
LOOP2
LOOP1
LOOP0
Loopback Diagnostic Select
LOOP[2:0] are used to select the loopback mode.
0XX = No Loopback
100 = Dual Loopback
101 = Analog Loopback
110 = Remote Loopback
111 = Digital Loopback
R/W
0
0
0
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