MPC8260 UPM Timing Diagram, Rev. 2

Freescale Semiconductor

15

UPM Read-Modify-Write Cycle

Figure 9 shows a 32-bit write to a 64-bit port to trigger the read-modify-write cycle.

Figure 9. UPM with Read-Modify-Write Cycle

CLKIN

ADDR

DATA

TS

AACK

ABB

DBB

ALE

PSDVAL

CS

PGPLx

BS

TA

addr

READ

WRITE

Write Data

Read Data