AN2347 Freescale Semiconductor / Motorola, AN2347 Datasheet - Page 2

• Manufacturer Part Number: AN2347
• Description: Using an MPC8260 and an MPC7410 with Shared Memory
• Manufacturer: Freescale Semiconductor / Motorola

Features
Features
The main components consist of the MPC7410, the MPC8260 and the Tundra CA91L750 PowerPRO
memory controller. These devices are connected using a standard 60x bus operating at 83MHz. The
PowerPRO arbitrates control of the bus between the MPC7410 and the CPM within the MPC8260.
1.2
The key features of the three main devices used in the application are as follows:
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MPC7410
— High performance, superscaler microprocessor
— Eight independent execution units and three register files
— Rename buffers
— Completion uit
— Separate on-chip L1 instruction and data caches (Harvard architecture)
— Level 2 (L2) cache interface
— Separate memory management units (MMUs) for instructions and data
— Efficient data flow
— Multiprocessing support features
— Power and thermal management
— Performance monitor can be used to help debug system designs and improve software
— In-system testability and debugging features through JTAG boundary-scan capability
MPC8260
— G2 dual-issue integer core—disabled in this application
— Lower power
— Separate power supply for internal logic and for I/O logic
— Separate PLLs for G2core and for CPM
— 64-bit data and 32-bit address 60x bus
— 32-bit data and 18-bit address local bus
— System interface unit (SIU)
— Twelve-bank memory controller
— Communications processor module (CPM)
Tundra PowerPRO (CA91L750)
— Processor interface
— SDRAM interface
— FLASH/ROM Interface
— Two high-speed UARTs
— I
— Programmable general purpose timer
— System watchdog timer
— 32 channel interrupt controller
— 50 general purpose I/O pins—multiplexed with other functions
— JTAG support for board level testing
Features
efficiency
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C interface
Using an MPC8260 and an MPC7410 with Shared Memory
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA