XRT74L73 Datasheet, PDF (80/488 Pages) Exar Corporation – 3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER

XRT74L73
3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER
REV. P1.0.1
PRELIMINARY
BIT NUMBER
NAME
4-0
Transmit UTOPIA Port
Number[4:0]
TYPE
R/W
DESCRIPTION
Transmit UTOPIA Port Number[4:0]:
These READ/WRITE register bits, along with the "Transmit
UTOPIA Port Address[4:0]" bits (within the "Transmit UTOPIA
Port Address" Register (Address = 0x0593) permit the user to
assign a unique Transmit UTOPIA address to each XRT74L73
device.
The Transmit UTOPIA Address Assignment Procedure:
In order to assign a UTOPIA Address to a given Channel (or
Port) within the XRT74L73 device, the user must do the follow-
ing.
a. Write the value corresponding to a given XRT74L73
Channel into this register.
b. Write the corresponding UTOPIA Address value into the
"Transmit UTOPIA Port Address" Register (Address =
0x0593).
Once this "two-step" procedure has been executed, then the
XRT74L73 Channel (as specified during step "a") will be
assigned the "Transmit UTOPIA Address" value (as specified
during step "b").
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