MPC8540 datasheet(599/1302 Pages) FREESCALE

Part #	MPC8540

Description	MPC8540 PowerQUICC III??Integrated Host Processor Reference Manual

PDF	1302 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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Initialization/Application Information

MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1

Freescale Semiconductor

13-95

13.5.4.3.4 256-Mbyte SDRAM

This example uses the same Micron SDRAM as in the previous example, but doubles the number

of devices connected and therefore uses two chip selects.

13.5.4.3.5 512-Mbyte SDRAM

This example uses the MT48LC64M4A2FB from Micron to implement 512 Mbytes.

In this SDRAM organization:

•

The 32-bit port size is 8

× 4 × 64 Mbit × 2 chip select lines.

•

Each device has 4 internal banks, 13 row address lines, and 11 column address lines.

Table 13-39. Register Settings for 128-Mbytes SDRAMs

Field

Value

BRn

Base address

XBA

Ext. Base Address

11 = 32-bit port size

011 = SDRAM-local bus

ORn

11_1111_1000_0000_0000_0

XAM

COLS

011

ROWS

100

LSDMR

RFEN

000

BSMA

011

RFRC

From device data sheet

PRETOACT

From device data sheet

ACTTOROW

From device data sheet

WRC

From device data sheet

BUFCMD

From device data sheet

MPC8540 Datasheet(PDF) 599 Page - Freescale Semiconductor, Inc

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