Freescale Semiconductor MPC8260 User Manual

Page 462

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Memory Controller

MPC8260 PowerQUICC II Family Reference Manual, Rev. 2

11-44

Freescale Semiconductor

Figure 11-29. SDRAM Single-Beat Read, Page Hit, CL = 3

Figure 11-30. SDRAM Two-Beat Burst Read, Page Closed, CL = 3

Figure 11-31. SDRAM Four-Beat Burst Read, Page Miss, CL = 3

CLK

ALE

CS

SDRAS

SDCAS

MA[0–11]

Column

WE

DQM

Data

D0

Z

CLK

ALE

CS

SDRAS

SDCAS

MA[0–11]

Row

Column

WE

DQM

Data

D0

D1

CLK

ALE

CS

SDRAS

SDCAS

MA[0–11]

WE

DQM

Data

D0

Z

A10 = 1

BS

*

* BS—Bank select according to SDRAM organization. A10 = 1 means all banks are precharged.

Row

CAS Latency = 3

Col

D1

D2

D4

Deactivate

Activate

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