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XRT75VL00D датащи(PDF) 41 Page - Exar Corporation

номер детали XRT75VL00D
подробное описание детали  E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
PDF  92 Pages
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производитель  EXAR [Exar Corporation]
домашняя страница  http://www.exar.com
Logo EXAR - Exar Corporation

XRT75VL00D датащи(HTML) 41 Page - Exar Corporation

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XRT75VL00D
REV. 1.0.3
E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
36
When the XRT75VL00D is configured in Host mode, the following input pins,TxLEV, TAOS, RLB, LLB, E3,
STS-1/DS3, REQEN, JATx/Rx, JA0 and JA1 are disabled and must be connected to ground.
Table 14 below illustrates the functions of the shared pins in either Host mode or in Hardware mode.
NOTE: While configured in Host mode, the TxON input pin will be active if the TxON bit in the control register is set to “1”,
and can be used to turn on and off the transmit output drivers. This permits a system designed for redundancy to
quickly switch out a defective line card and switch-in the backup line card.
TABLE 14: FUNCTIONS OF SHARED PINS
PIN NUMBER
IN HOST MODE
IN HARDWARE MODE
24
CS
RxClkINV
26
SClk
TxClkINV
25
SDI
RxON
27
SDO
RxMON
28
INT
LOSMUT
TABLE 15: REGISTER MAP AND BIT NAMES
ADDRESS
(HEX)
PARAMETER
NAME
DATA BITS
76
5
43210
0x00
APS/Redundancy
(read/write)
Reserved Reserved
Reserved
RxON
Reserved Reserved Reserved
TxON
0x01
Interrupt Enable
(read/write)
Reserved
CNT_SATIE PRBSIE
FLIE
RLOLIE
RLOSIE
DMOIE
0x02
Interrupt Status
(reset on read)
Reserved
CNT_SATIS PRBSIS
FLIS
RLOLIS
RLOSIS
DMOIS
0x03
Alarm Status
(read only)
Reserved PRBSLS
DLOS
ALOS
FL
RLOL
RLOS
DMO
0x04
Transmit Control
(read/write)
Reserved
TxMON
INSPRBS Reserved
TAOS
TxClkINV
TxLEV
0x05
Receive Control
(read/write)
Reserved
DLOSDIS
ALOSDIS RxClkINV LOSMUT
RxMON
REQEN
0x06
Block Control
(read/write)
Reserved
PRBSEN
RLB
LLB
E3
STS1/
DS3
SR/DR
0x07
Jitter Attenuator
(read/write)
Reserved
DFLCK
PNTRST
JA1
JATx/Rx
JA0
0x08-
0x1F
Reserved
0x20
Interrupt Enable-
Global
(read/write)
Reserved
Reserved Reserved
INTEN
0x21
Interrupt Status
(read only)
Reserved
Reserved Reserved
INTST



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