The PCI Bridge

Table 1-24. Hardware Configuration Register Field Descriptions
Field

Description

 

 

MPC_ID

Microprocessor identifier:

 

0000: MPC8260ZU200, 200/133/66MHz, rev A.1

 

0001: MPC8260ZU133, 133/133/66MHz, rev A.1

 

0010: MPC8260ZU200, 200/133/66MHz, rev B.3

 

0011-1111: Reserved for future processor versions

 

 

FLASH_SIZE

Flash EEPROM size:

 

00: 1 Mbytes

 

01: 4 Mbytes

 

10: 8 Mbytes

 

11: Reserved for future use

 

 

LSDRAM_SIZE

Local SDRAM size:

 

00: No memory device

 

01: 8 Mbytes

 

10: 16 Mbytes

 

11: Reserved for future use

 

 

SDRAM_SIZE

Main SDRAM size:

 

000: 16 Mbytes (not possible on the 4539)

 

001: 32 Mbytes

 

010: 64 Mbytes

 

011: 128 Mbytes

 

100-111: Reserved for future use

 

 

CAM_SIZE

CAM size:

 

000: No CAM device

 

001: 4 K x 64

 

010: 8 K x 64 (not possible on the 4539)

 

011: 16 K x 64

 

100: 32 K x 64 (not possible on the 4539)

 

101-111: Reserved for future use

 

 

MONARCH

Monarch capability:

 

0: Not monarch capable

 

1: Monarch capable (not possible on the 4539)

 

 

BUS_FREQ

Local Bus frequency:

 

000: 50.000 MHz

 

001: 65.536 MHz (the only frequency currently available on the

 

4539)

 

010: 66.000 MHz

 

011-111: Reserved for future use

 

 

ACCESS

Access type:

 

0: 2 port front access board

 

1: 4 port rear access board

 

 

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Interphase Corporation