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PM7326 Datasheet(PDF) 43 Page - PMC-Sierra, Inc

Part # PM7326
Description  ATM/PACKET TRAFFIC MANAGER AND SWITCH
PDF  238 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM7326 Datasheet(HTML) 43 Page - PMC-Sierra, Inc

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PM7326 S/UNI APEX
DATA SHEET
PMC-1981224
ISSUE 6
ATM/PACKET TRAFFIC MANAGER AND SWITCH
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
27
Pin Name
Type
Pin
No.
Function
WRPA
Input
(Master)
Tri-state
(Slave)
U1
WAN Receive Packet Available. WRPA indicates
cell availability.
This pin is in Hi-Z when the WAN receive interface
is not enabled.
If master mode is selected, the selected PHY device
drives WRPA with the cell availability status N
WRCLK cycles after WRADR[2:0] matches the PHY
device address. If the PHY device is a UTOPIA
device, N=1. If the PHY device is an Any-PHY
device, N=2. Assertion of WRPA indicates that at
least one entire cell is available.
If slave mode is selected, this signal is an output
and the S/UNI APEX plays the roll of a single port
UTOPIA L2 slave device driving the WRPA when the
WRADR matches the programmed
WANRxSlaveAddr register. A logical high indicates
that the S/UNI APEX is capable of accepting at least
one cell.
WRPA is sampled/updated/Hi-Z’d on the rising edge
of WRCLK.



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