PM3350-SW datasheet(45/224 Pages) PMC

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ELAN 8X10

PM3350 ELAN 8 X10

DATA SHEET

PMC-970109

ISSUE 3

8 PORT ETHERNET SWITCH

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND PMC-SIERRA, INC. CUSTOMERS ONLY

When viewed from the PCI bus, the ELAN 8x10 device appears to take up a 16 MB

block of contiguous addresses in the total 4 GB PCI address space. A virtually identical

memory map is presented to the PCI bus when accessing the ELAN 8x10 device as a

PCI slave (target), with the exception that a set of device control and communication

registers are implemented in the uppermost 64 kB of the 16 MB address space used by

the ELAN 8x10 device (note that the memory addresses shown increase upwards):

Rest of PCI Address Space

0xBBffffff

Device Control Registers

0xBBff0000

0xBBfeffff

Unused

Bank 3

0xBBc00000

0xBBbfffff

Unused

Bank 2

0xBB800004

0xBB800000

LED Register

0xBB4fffff

Unused

0xBB420000

Bank 1

0xBB41ffff

Boot EPROM

(32 kB; occupies 128 kB)

0xBB400000

0xBB3fffff

Unused

0xBB100000

Bank 0

0xBB0fffff

System DRAM

(1 MB)

0xBB000000

Rest of PCI Address Space

The start address of the block occupied by the ELAN 8x10 is defined by the setting of

the memory base address register within the PCI configuration register space of the

ELAN 8x10 device, and is represented by the

BB component of the addresses given in

the table above. The memory base address register may be set to any arbitrary value

via a PCI configuration write after system reset, provided that the base address is on a

PM3350-SW Datasheet(PDF) 45 Page - PMC-Sierra, Inc

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