XRT73L03A Datasheet, PDF (14/62 Pages) Exar Corporation – 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT

XRT73L03A
3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 2.0.4
MICROPROCESSOR INTERFACE
PIN #
NAME
TYPE
104
RxOFF_2
I
96
REGR/
I
RxClkINV
DESCRIPTION
Receiver Shut OFF Input - Channel 2:
Hardware Mode - Receiver Shut OFF Input - Channel 2:
Setting this input pin "High" shuts off the Receive Section in Channel 2.
Setting this input pin "Low" enables the Receive Section for full opera-
tion.
Register Reset Input pin (Invert RxClk(n)) Output - Select):
The function of this pin depends upon whether the XRT73L03A is oper-
ating in the HOST Mode or in the Hardware Mode.
NOTE: This pin is internally pulled "High".
In the HOST-Mode - Register Reset Input:
Setting this input pin "Low" causes the XRT73L03A to reset the contents
of the Command Registers to their default settings and default operating
configuration.
In the Hardware Mode - Invert RxClk Output Select:
Setting this input pin "High" configures the Receive Section of all Chan-
nels in the XRT73L03A to invert their RxClk_(n) clock output signals and
configures Channel (n) to output the recovered data via the RPOS_(n)
and RNEG_(n) output pins on the falling edge of RxClk_(n).
Setting this pin "Low" configures Channel (n) to output the recovered
data via the RPOS_(n) and RNEG_(n) output pins on the rising edge of
RxClk_(n).
12