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Preliminary
1. Overview
The PowerPC
750FX Evaluation Board is an evaluation platform intended to support the needs of
prospective users of the IBM PowerPC 750FX processor. The form factor of the board is a full-length PCI
card. This board is suitable for software development, for benchmarking, and for detailed study of the
hardware. This board contains two PPC750FX processors. A memory control and PCI bridge function
provided on the board coordinates the operations of the two processors. The two processors may be used
together or independently under program control. Both processors share the available memory and the PCI
interface. The board can appear to the PCI interface as either a 64-bit adapter or a 64-bit host.
Please be aware that the circuitry on this board is sometimes more complex than would be required for a
board design limited to a particular application. A customer who is developing his own design using this board
design as a guide should simplify the design wherever his application allows.
Warning: IBM is not responsible for use of the circuit designs on this board or use of the design of the
board itself in any other applications. Any functional, reliability, or safety issues resulting from the use of
any part of this board design, including copying the board, are the responsibility of the user.
The following sections will highlight the PPC750FX processor, and will then briefly discuss the features
available on the board.
1.1 PowerPC 750FX RISC Microprocessor Features
The IBM PowerPC 750FX RISC Microprocessor is a 32-bit implementation of the IBM PowerPC family of
reduced instruction set computer (RISC) microprocessors. The PPC750FX is targeted for high performance,
low power systems using a 60x bus. The 750FX also includes an internal 512KB L2 cache with on-board
Error Correction Circuitry (ECC). A block diagram of the processor chip is provided in Figure 1-1.
750FXebm_ch1.fm
June 10, 2003
Evaluation Board Manual
PPC750FX Evaluation Board
Overview
Page 13 of 115
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