Features:
Overview:
· OC-3 (155 Mbps) line rates (full duplex)
· Support for up to 16 PHY UTOPIA Level 2
on the PHY interface
· Supports 64K VCs
· Implements ATM layer functions for
broadband ISDN according to ANSI
recommendations, ATM Forum
specifications, and Bellcore
recommendations

UPC/NPC:
· Four bucket per connection GCRA (leaky
bucket algorithm)
· Either ingress or egress UPC/NPC
· Packet-based policing: partial packet discard
(PPD), early packet discard (EPD)
· Selective discard for CLP = 1 and CLP =
0+1 flows
· CLP transparency / significance mode

Operation, Administration, and Maintenance
(OAM):
· Fault Management
· Continuity Check and Loopback on
all connections
· Virtual Path (VP) and Virtual
Channel (VC) Alarm Surveillance
(AIS/RDI) on all connections using
an internal scan process to generate
and insert OAM cells
· Performance Management
· Performance Monitoring on all
connections
· Automatically performs PM block
test once the microprocessor initiates
block test request

Available Bit Rate (ABR):
· Supports Relative Rate ABR
· Supports changing RM cells’ priority by
marking the ingress switch parameters

Microprocessor Interface:
· Supports cell insertion / extraction using
direct access registers by the microprocessor
or by a DMA device
· Supports cell copying from the cell streams
using direct access registers to the
microprocessor or to a DMA device
· Provides indirect access to external memory
· Provides byte-swapping on cell payloads to
and from the microprocessor bus to support
both big-endian and little-endian buses
· Glueless connection to the MC68360
(QUICC), MPC860SAR and MPC860

Other Features:
· Configurable as a UNI (User-Network
Interface) or NNI (Network-Network
Interface)
· Uses external memory (up to 16 MB) to
provide context management for all
connections
· Supports point-to-multipoint operation on
egress cell flow
· Uses 3.3 V power supply
· IEEE 1149.1 (JTAG) boundary scan test
port

A p plications:
· ATM Core Switches
· ATM Edge Switches
· ATM Cross-Connects
· Multiservice Platforms
· Access Multiplexers