XRT75R03IVTR Exar Corporation, XRT75R03IVTR Datasheet - Page 63

• Manufacturer Part Number: XRT75R03IVTR
• Description: IC LIU E3/DS3/STS-1 3CH 128LQFP
• Manufacturer: Exar Corporation

Specifications of XRT75R03IVTR

• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

xr
xr
xr
xr
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
N
UMBER
B
1
0
IT
TxON Ch 1
TxON Ch 0
N
AME
T
R/W
R/W
YPE
0
0
D
V
EFAULT
ALUE
Transmit Section ON - Channel 1
This READ/WRITE bit-field is used to either turn on or turn off the
Transmit Driver associated with Channel 1. If the user turns on the
Transmit Driver, then Channel 1 will begin to transmit DS3, E3 or
STS-1 pulses on the line via the TTIP_1 and TRING_ 1 output pins.
Conversely, if the user turns off the Transmit Driver, then the TTIP_1
and TRING_1 output pins will be tri-stated.
0 - Shuts off the Transmit Driver associated with Channel 1 and tri-
states the TTIP_1 and TRING_ 1 output pins.
1 - Turns on or enables the Transmit Driver associated with Channel
1.
N
Transmit Section ON - Channel 0
This READ/WRITE bit-field is used to either turn on or turn off the
Transmit Driver associated with Channel 0. If the user turns on the
Transmit Driver, then Channel 0 will begin to transmit DS3, E3 or
STS-1 pulses on the line via the TTIP_0 and TRING_ 0 output pins.
Conversely, if the user turns off the Transmit Driver, then the TTIP_0
and TRING_0 output pins will be tri-stated.
0 - Shuts off the Transmit Driver associated with Channel 0 and tri-
states the TTIP_0 and TRING_ 0 output pins.
1 - Turns on or enables the Transmit Driver associated with Channel
0.
N
OTE
OTE
: If the user wishes to exercise software control over the state
: If the user wishes to exercise software control over the state
60
of the Transmit Driver associated with Channel 1, then it is
imperative that the user pull the TxON_1 (pin 1) to a logic
"High" level.
of the Transmit Driver associated with Channel 0, then it is
imperative that the user pull the TxON_0 (pin 38) to a logic
"High" level.
D
ESCRIPTION
XRT75R03
REV. 1.0.8