![](http://datasheet.mmic.net.cn/330000/PM7341_datasheet_16444387/PM7341_27.png)
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
PM7341 S/UNI-IMA-84
DATASHEET
PMC-2000223
ISSUE 4
INVERSE MULTIPLEXING OVER ATM
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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Interfaces to a 1M x 16 ( for at least 69 msec of T1, 56 msec of E1 differential
delay tolerance)or 4M x 16 SDRAM ( for 279 msec of T1, 226 msec of E1
differential delay tolerance) through a 16-bit SDRAM interface.
Provides a 16-bit microprocessor bus interface for configuration and Link and
Unit Management.
ATM receive interface supports 8- and 16-bit UTOPIA L2 or Any-PHY cell
interfaces at clock rates up to 52 MHz.
Any-PHY receive slave appears as single device. The PHY-ID of each cell
is identified in the in-band address.
UTOPIA L2 receive slave appears as a 31 port multi-PHY.
UTOPIA L2 receive slave can also appear as a single port with the logical
port provided as a prepend or in the HEC/UDF field.
ATM transmit interface supports 8- and 16-bit UTOPIA L2 and Any-PHY cell
interfaces at clock rates up to 52 MHz.
Each link configured for cell delineation or each IMA group appears as a
PHY port on the Any-PHY and UTOPIA L2 bus.
Any-PHY transmit slave appears as an 84-port multi-PHY. The PHY-ID of
each cell is identified in the in-band address.
UTOPIA L2 transmit slave appears as a 31-port multi-PHY.
Seamlessly interconnects to PMC-Sierra’s PM7326 S/UNI-APEX ATM/Packet
Traffic Manager and Switch and PM7324 S/UNI-ATLAS ATM layer devices.
Loopback and Diagnostic Features
Supports UTOPIA L2 / Any-PHY Loopback (global loopback– where all cells
received on the UTOPIA L2 / Any-PHY interface are looped back out)
Supports Line Side Loopback (global loopback– where all data received on
the line side is looped back out)
Supports the capability to trace ICP cells for any group