Freescale Semiconductor PowerQUICC MPC885 Reference Manual page 497

15.8.5 External Master Examples
The following sections provide external master examples.
15.8.5.1 External Masters and the GPCM
The following figures show examples of external masters' interaction with the GPCM. Note that
synchronous and external masters behave differently. Synchronous external masters behave like internal
masters, except for an extra clock cycle at the beginning of the access required for address decode.
Asynchronous external masters behave as described in
Support."
CLKOUT
A[0:27]
A[28:31]
R/W
BURST
TSIZ
TS
TA
CS
WE
OE
Data
Freescale Semiconductor
Address
Match and
Compare
Figure 15-47. Synchronous External Master Access
MPC885 PowerQUICC Family Reference Manual, Rev. 2
Section 15.5.3, "External Asynchronous Master
Memory
Device
Access
Memory Controller
15-57