Motorola MPC8260 Manuel d'utilisateur

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The purpose of this document is to provide the designer a hardware method of interfacing the
Motorola MPC8260 PowerQUICC II
TM
Integrated Communications Processor with the
MCM69C433 Motorola Flexible Content Addressable Memory (CAM).
The following topics are addressed:
Topic Page
Section 1, “MPC8260 PowerQUICC II
TM
” 1
Section 2, “Motorola Content Addressable Memories (CAMs)” 1
Section 3, “CAM Interface” 2
Section 4, “MPC8260 Register Programming” 4
Section 5, “References” 12
1 MPC8260 PowerQUICC II
TM
Motorola’s PowerQUICC II
TM
processor family is the next generation of Motorola’s leading
PowerQUICC line of integrated communication processors. The MPC8260 integrates two
main components, the embedded MPC603e G2 core and the Communications Processor
Module (CPM). The CPM simultaneously supports three fast serial communications
controllers (FCCs), two multichannel controllers (MCCs), four serial communications
controllers (SCCs), two serial management controllers (SMCs), one serial peripheral interface
(SPI), and one I2C interface.
2 Motorola Content Addressable Memories
(CAMs)
The MCM69C433 is a flexible content addressable memory (CAM) that can contain 16,384
entries of 64 bits. It is implemented with standard 4-transistor SRAM cells. The widths of the
match field and the output field are programmable. At 66 MHz, the match time is designed to
be less than or equal to 240 nanoseconds. As a result, the Motorola CAM is well suited for
datacom applications such as Virtual Path Identifier/Virtual Circuit Identifier (VCI/VPI)
translation in ATM switches up to OC12 (622 Mbps) data rates and Media Access Control
(MAC) address lookup in Ethernet/Fast Ethernet bridges. The CAM is also well suited for
fully associative disk drive cache and RAID applications. The match request rate of the
MCM69C433 is user defined with a trade-off between the match request rate and the rate of
new entries added to the CAM.
White Paper
MCM69C433WP/D
Rev. 2 ,1/2003
MPC8260 PowerQUICC II
TM
to CAM Interfacing –
MCM69C433
Eric Jackson,
Technical Marketing,
NCSD
Networking &
Computing Systems
Group
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
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Résumé du contenu

Page 1 - 1 MPC8260 PowerQUICC II

The purpose of this document is to provide the designer a hardware method of interfacing theMotorola MPC8260 PowerQUICC II TM Integrated Communicati

Page 2 - 3 CAM Interface

10 MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 MOTOROLA MPC8260 Register Programming MPC8260 Register Programming Figure 3. PowerQU

Page 3

MOTOROLA MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 11 MPC8260 Register ProgrammingFigure 5. PowerQUICC II TM Read Cycle (CAM Match

Page 4

12 MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 MOTOROLA References References 5 References MPC8260 PowerQUICC II TM User’s Manua

Page 5 - 4.1 CAM Control Port Access

MOTOROLA MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 13 References THIS PAGE INTENTIONALLY LEFT BLANK Freescale Semiconductor, I

Page 6 - 4.2 CAM Match Port Access

14 MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 MOTOROLAReferences References THIS PAGE INTENTIONALLY LEFT BLANK Freescale Semi

Page 7 - 4.3 UPM RAM Array

MOTOROLA MPC8260 PowerQUICC IITM to CAM Interfacing – MCM69C433 15ReferencesTHIS PAGE INTENTIONALLY LEFT BLANK Freescale Semiconductor, I

Page 8 - 4.4 CAM Register Configuration

MCM69C433WP/DHOW TO REACH US:USA/EUROPE/LOCATIONS NOT LISTED:Motorola Literature Distribution P.O. Box 5405, Denver, Colorado 80217 1-303-675-2140(800

Page 9

2 MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 MOTOROLA CAM Interface CAM Interface 3 CAM Interface The CAM consists of two indepen

Page 10 - Freescale Semiconductor, Inc

MOTOROLA MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 3 CAM Interface scheme has a unique address. Since data transactions will occur

Page 11

4 MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 MOTOROLA MPC8260 Register Programming MPC8260 Register Programming written to the CA

Page 12 - 5 References

MOTOROLA MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 5 MPC8260 Register Programming 4.1 CAM Control Port Access To select the GPCM to

Page 13

6 MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 MOTOROLA MPC8260 Register Programming MPC8260 Register Programming OR1 = 1111 1111 1

Page 14

MOTOROLA MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 7 MPC8260 Register Programming OR2 = 1111 1111 1111 1111 1001 0001 0000 0000. 4.

Page 15

8 MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 MOTOROLA MPC8260 Register Programming MPC8260 Register Programming Therefore, the va

Page 16

MOTOROLA MPC8260 PowerQUICC II TM to CAM Interfacing – MCM69C433 9 MPC8260 Register Programming After the start-up functions are completed, the C

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