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Motorola Electronic Components Datasheet

MC92500 Datasheet

ATM Cell Processor

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document by MC92500/D
ΤΜ
ATM Cell Processor
The ATM Cell Processor (MC92500) is a peripheral device composed of dedicated
high performance Ingress and Egress Cell Processors combined with UTOPIA
Compliant PHY and Switch Interface ports (see Figure 1).
MC92500 Features
• Full duplex operation at SONET STS-3c, SONET STS-1, DS3 PLCP, or any physical link
running up to 155 Mbit/sec
• Implements ATM Layer functions for broadband ISDN according to ITU recommendations
and ATM forum UNI specification
• Performs internal VPI and VCI address compression (with an option for external
compression) for up to 64K VCs
• Supports up to 16 physical links using dedicated Ingress/Egress MultiPhy control signals
• Each physical link can be configured as either a UNI or NNI port
• Supports multicast, multiport address translation
• Maintains both virtual connection and physical link counters on both Ingress and Egress
cell flows for detailed billing and diagnostics
• Provides a flexible 32 bit external memory port for context management
• Automated AIS, RDI, CC and Loopback functions with Performance Monitoring Block Test
on up to 64 Bidirectional connections
• Programmable 32 bit microprocessor interface supporting either big- or little-endian bus
formats
• Per-connection leaky-bucket based UPC or NPC design with up to four buckets per
connection allows any combination of CLP-aware peak, average, and burst-length
policing with programmable tag/drop action per policer
• Implements separate rate controlled cell insertion and priority based cell extraction
queues accessible from all cell flows
• Supports a programmable number of additional switch overhead parameters allowing
adaptation to any switch routing header format
MC92500
ATM Cell Processor
ZQ SUFFIX
GTBGA
CASE 5203
Ordering Information
Device
Package
MC92500ZQ 256 GTBGA
Utopia
I/F
Ingress PHY I/F (IPHI)
MultiPhy Support
Ingress Cell Processor
(IPU)
Ingress Switch I/F
(ISWI)
Utopia
I/F
Host
System
Microprocessor I/F
(MPIF)
Utopia
I/F
Egress PHY I/F (EPHI)
MultiPhy Support
External Memory I/F
(EMIF)
Internal SCAN FMC Generation
(ISCAN)
(FMC)
JTAG
Boundary
Scan
Egress Cell Processor
(EPU)
Egress Switch I/F
(ESWI)
Memory
I/F
Test
Port
Utopia
I/F
Figure 1. Representative Block Diagram
This document contains information on a new product. Specifications and information herein are subject to change
without notice.
© MOTOROLA, INC. 1997
REV 1.1


Motorola Electronic Components Datasheet

MC92500 Datasheet

ATM Cell Processor

No Preview Available !

TABLE OF CONTENTS
1. ATM NETWORK
1.1 ATM Network Description ................................... 3
1.2 ATM Network Applications ................................. 4
2. FUNCTIONAL DESCRIPTION
2.1 System Functional Description .......................... 5
2.2 MC92500 Functional Description ....................... 5
2.2.1 Ingress Cell Flow ......................................... 6
2.2.2 Egress Cell Flow .......................................... 6
2.3 Other Functions ................................................. 7
2.4 MC92500 Block Diagram ................................... 7
2.4.1 Ingress PHY Interface (IPHI) ....................... 8
2.4.2 Ingress Cell Processing Unit (IPU) .............. 8
2.4.3 Ingress Switch Interface (ISWI) ................... 8
2.4.4 Egress Switch Interface (ESWI) ................... 8
2.4.5 Egress Cell Processing (EPU) ..................... 8
2.4.6 Egress PHY Interface (EPHI) ....................... 9
2.4.7 External Memory Interface (EMIF) ............... 9
2.4.8 Microprocessor Interface (MPIF) ................. 9
2.4.9 Internal Scan (ISCAN) ................................. 9
2.4.10 Forward Monitoring Cell Generation(FMC) 9
3. REGISTERS DESCRIPTION
3.1 MC92500 Registers ........................................... 9
4. EXTERNAL MEMORY DESCRIPTION
4.1 MC92500 External Memory ............................. 11
4.1.1 Memory Partitioning ................................... 11
5. SIGNAL DESCRIPTION
5.1 Functional Signal Groups ................................. 13
5.2 Ingress PHY Signals ........................................ 13
5.3 Egress PHY Signals ......................................... 14
5.3.1 Ingress Switch Interface Signals ................ 14
5.3.2 Egress Switch Interface Signals ................ 15
5.4 External Memory Signals ................................. 15
5.4.1 Control Signals .......................................... 16
5.4.2 Microprocessor Signals (MP)..................... 16
5.4.3 Clock Signals ............................................. 17
5.4.4 JTAG Interface Test Signals ....................... 17
6. INGRESS DATA PATH OPERATION
6.1 Ingress Data Path ............................................ 17
6.2 Interface to Physical Layer - Cell Assembly ..... 18
6.3 Address Compression ...................................... 19
6.4 Cell Counting .................................................... 19
6.5 Ingress Cell Insertion ....................................... 20
6.6 Switch Overhead Information ........................... 20
6.7 Transfer to Switch ............................................. 20
7. EGRESS DATA PATH OPERATION
7.1 Egress Data Path ............................................. 20
7.1.1 Transfer from Switch ................................... 21
7.1.2 Multicast Identifier Translation .................... 22
7.1.3 Egress Cell Insertion .................................. 22
7.1.4 Address Translation .................................... 22
7.1.5 Cell Counting ............................................. 22
7.1.6 Transmission to Physical Layer .................. 22
8. SYSTEM OPERATION
8.1 MC92500 Modes of Operation ......................... 23
8.1.1 Setup Mode ................................................ 23
8.1.2 Operate Mode ............................................ 23
8.1.3 Reset .......................................................... 23
8.2 Data Path Clock Configuration ......................... 23
9. ELECTRICAL CHARACTERISTICS
9.1 Electrical Specifications ................................... 24
9.1.1 Clocks ........................................................ 24
9.1.2 Microprocessor Interface Timing ................ 25
9.1.3 PHY Interface Timing ................................. 32
9.1.4 Switch Interface Timing .............................. 33
9.1.5 External Memory Interface Timing ............. 34
9.1.6 Write Cycle Timing ..................................... 34
9.1.7 Read Cycle Timing ..................................... 35
9.1.8 DC Electrical Characteristics ..................... 36
10. PACKAGE INFORMATION
10.1 Pin Assignment .............................................. 38
10.2 256 PBGA Case Outline ................................. 39
MOTOROLA
2
MC92500


Part Number MC92500
Description ATM Cell Processor
Maker Motorola
Total Page 30 Pages
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