xrt75r03 Exar Corporation, xrt75r03 Datasheet - Page 55

• Manufacturer Part Number: xrt75r03
• Description: Xrt75r03 -multi-channel Line Interface Unit Liu Family Desynchronizer And Jitter Attenuator With R3 Technologytm
• Manufacturer: Exar Corporation

xr
xr
xr
xr
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
When the XRT75R03 is configured in Host mode, the following input pins,TxLEV_n, TAOS_n, RLB_n, LLB_n,
E3_n, STS-1/DS3_n, REQEN_n, JATx/Rx, JA0 and JA1 are disabled and must be connected to ground.
The Table 14 below illustrates the functions of the shared pins in either Host mode or in Hardware mode.
N
OTE
P
IN
: While configured in Host mode, the TxON_n input pins will be active if the TxON_n bits in the control register are set
N
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.
66
67
68
69
71
UMBER
I
N
T
H
ABLE
OST
SClk
SDO
SDI
INT
CS
M
14: F
ODE
UNCTIONS OF SHARED PINS
52
RxClkINV
TxClkINV
RxON
RxMON
LOSMUT
I
N
H
ARDWARE
M
ODE
XRT75R03
REV. 1.0.8