MFC2000 datasheet(33/426 Pages) ETC

33 / 426 page

Hardware Description

MFC 2000 Multifunctional Peripheral Controller 2000

100723A

Conexant

4-3

4.1.1.3

External Memory Space

The external memory space (up to 48 M) consists of ROM, DRAM/ARAM, Flash memory, SRAM, modem, and

variable-use spaces with assigned chip selects. Most external chip selects have programmable address ranges,

start locations, wait states, and read and write strobe timing. SRAM and DRAM/ARAM chip select controls are

battery-backed up. Refer to Figure 4-1 for the MFC2000 memory map and to Figure 4-2 for the internal memory

map.

External memory spaces include the following:

ROMCSn, ROM (4 M)

(00000000h-003FFFFFh)

CS5n, general (4 M)

(00400000h-007FFFFFh)

FCS0n, NOR type Flash memory (2 M)

(00800000h-009FFFFFh)

FCS1n, NOR type Flash memory (2 M)

(00A00000h-00BFFFFFh)

Address location for generating FWRn and

FRDn for the NAND type Flash memory

(00C00000h-00C0003Fh)

(Reserved)

(00C00002h-00C1FFFFh)

MCSn, modem (128 K)

(00C20000h-00C2FFFFh)

P80_CSn

(00C30000h - 00C37FFFh)

SDAA_CSn

(00C38000h - 00C3FFFFh)

CS4n, optional general (128 K)

(00C40000h-00C5FFFFh)

CS3n, optional general (128 K)

(00C60000h-00C7FFFFh)

CS2n, optional general (512 K)

(00C80000h-00CFFFFFh)

CS1n, general (1 M)

(00D00000h-00DFFFFFh)

CS0n, SRAM or general (2 M)

(00E00000h-00FFFFFFh)

SDRAM (For internal and Countach Imaging DSP

Subsystem) (16 M)

(01000000h-01FFFFFFh)

RAS0n, DRAM or ARAM (16 M)

(02000000h-02FFFFFFh)

RAS1n, DRAM or ARAM (16 M)

(03000000h-03FFFFFFh)

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