XRT79L71_1 Datasheet, PDF (214/434 Pages) Exar Corporation – 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC -

XRT79L71
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - REGISTER/MAP DESCRIPTION
LIU/JITTER ATTENUATOR CONTROL REGISTER BIT-FORMAT
LIU Transmit APS/Redundancy Control Register (Address = 0x1300)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
Unused
R/O
R/O
R/O
R/O
R/O
R/W
0
0
0
0
0
0
BIT 1
R/W
0
REV. 1.0.0
BIT 0
TxON
R/W
0
BIT
NUMBER
NAME
7 - 1 Reserved
0
TxON
TYPE
R/O
R/W
DEFAULT
VALUE
0
0
DESCRIPTION
Transmit Section ON:
This READ/WRITE bit-field permits the user to either turn
on or turn off the Transmit Driver of XRT79L71. If the user
turns on the Transmit Driver, then XRT79L71 will begin to
transmit DS3 or E3 (on the line) via the TTIP and TRING
output pins.
Conversely, if the user turns off the Transmit Driver, then the
TTIP and TRING output pins will be tri-stated.
0 - Shuts off the Transmit Driver associated with XRT79L71
and tri-states the TTIP and TRING0 output pins.
1 - Turns on (or enables) the Transmit Driver associated the
XRT79L71.
NOTE: If the user wishes to exercise software control over
the state of the Transmit Driver of the XRT79L71,
then it is imperative that the user pull the TxON (pin
R15) to a logic "Low" level.
LIU Interrupt Enable Register (Address = 0x1301)
BIT 7
BIT 6
BIT 5
BIT 4
Unused
R/O
R/O
R/O
R/O
0
0
0
0
BIT 3
Change of
FL
Condition
Interrupt
Enable
R/W
0
BIT 2
Change of
LOL
Condition
Interrupt
Enable
R/W
0
BIT 1
Change of
LOS
Condition
Interrupt
Enable
R/W
0
BIT 0
Change of
DMO
Condition
Interrupt
Enable
R/W
0
BIT
NUMBER
NAME
7 - 4 Reserved
TYPE
R/O
DEFAULT
VALUE
0
DESCRIPTION
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