XRT73L04B Datasheet, PDF (16/64 Pages) Exar Corporation – 4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT

XRT73L04B
4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.1
MICROPROCESSOR INTERFACE
PIN #
NAME
TYPE
72
SDO/E3_0
O
110
REGR/
I
RxClkINV
DESCRIPTION
Serial Data Output from the Microprocessor Serial Interface
The function of this pin depends upon the mode of operation.
HOST Mode Operation:
This pin serially outputs the contents of the specified Command Register
during Read Operations. The data on this pin is updated on the falling
edge of the SClk input signal. This pin is tri-stated upon completion of
data transfer.
Register Reset Input (Invert RxClk_(n) Output - Select):
The function of this pin depends upon the mode of operation.In Hard-
ware mode, this pin functions as RxClkINV.
HOST Mode - Register Reset Input:
Setting this input pin "Low" causes the XRT73L04B to reset the contents
of the Command Registers to their default settings and to its default
operating configuration.
NOTE: This pin is internally pulled “High”.
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