PM3350-SW datasheet(157/224 Pages) PMC

157 / 224 page

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

155

Bit

Type

Function

Default

Bit 31 to 24

R/W

MemBase[27:20]

MDATA[25:22]

or 0x00

Bit 23 to 4

FixBase[19:0]

0x00000

Bit 3

Bit 2

TYPE[1]

Bit 1

TYPE[0]

Bit 0

MSI

The PM3350 supports memory mapping only. At boot-up the internal registers

space is mapped to memory space. The device driver can disable memory space

through the PCI Configuration Command register.

MSI:

The Memory Space Indicator (MSI) bit is hardwired to zero to indicate that the

PM3350 resources map into memory space.

TYPE[1:0]:

The TYPE field indicates where the internal registers can be mapped. The

TYPE field is set to 00B to indicate that the internal registers can be mapped

anywhere in the 32 bit address space.

PF:

The Prefetchable (PF) bit is set if there are no side effects on reads and data

is returned on all the lanes regardless of the byte enables. Otherwise the bit

is cleared. The PF bit is hardwired to one to indicate that it is safe to prefetch

data from the PM3350 register/memory resources.

FixBase[19:0]:

The Fixed Base Address (FixBase[19:0]) bits define the size of the memory

space required for the PM3350 resources.

This 20-bit subfield is hardcoded to zero indicating the PM3350

on 16-megabyte boundaries.

MemBase[27:20]:

The Memory Base Address (MemBase[27:20]) bits define location of the

memory space required for the PM3350 resources. The MemBase[27:20]

bits correspond to the most significant 8 bits of the PCI address space.

PM3350-SW Datasheet(PDF) 157 Page - PMC-Sierra, Inc

PM3350-SW Datasheet(HTML) 157 Page - PMC-Sierra, Inc

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