FBFM2112F897CSLJLS View Datasheet(PDF) - Intel

Part Name

Description

Manufacturer

FBFM2112F897CSLJLS

Intel® FM2112 24-Port 10G/1G Ethernet Switch Chip

Intel 

Intel® FM2112 24-Port 10G/1G Ethernet Switch Chip Data Sheet

CPU Interface address space

The Chip-Level address space 0x00000-0x000FF is for the CPU

Interface. There are no physical registers within it but if a read to this

address range occurs then {31'd0,CPUI_STALL} will be returned.

CPUI_STALL indicates whether the CPU Interface is being told to STALL

(ie - the BOOT or JTAG are currently using the management bus).

Table 13. CPU Interface Address Space

Address Range

0x00000-0x000FF

Module

CPU Mgmt

Usage

There are no physical registers within this module.

If a read to this address range occurs then

{31'd0,CPUI _STALL} will be returned. CPUI_STALL

indicates whether the CPU Interface is being told to

STALL (ie - the BOOT or JTAG are currently using

the management bus).

A write will be ignored.

The bus timing interface for read and writes are shown in next two

figures. The minimum read frequency is 3 cycles and 2 for writes.

Figure 17. CPU Interface Read Cycles

Figure 18. CPU Interface Write Cycles

65

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