Motorola MPC533 Reference Manual page 398

Chip-Select Timing
Clock
Address
TS
TA
CSx
CSy
RD/WR
OE
Data
Figure 10-18. Consecutive Accesses (Read After Read From Same Bank, EHTR = 1)
10.3.5 Summary of GPCM Timing Options
Table 10-3 summarizes the different combinations of timing options.
Table 10-3. Programming Rules for Timing Strobes
Access
TRLX ACS
Type
0 read 00
0 read 10
0 read 11
0 write 00
0 write 10
0 write 11
0 write 00
0 write 10
10-22
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Address
Negated to
CSNT to CS
Add/Data
Asserted
Invalid
X 0 1/4 * clock
X 1/4 * clock 1/4 * clock
X 1/2 * clock 1/4 * clock
0 0 1/4 * clock
0 1/4 * clock 1/4 * clock
0 1/2 * clock 1/4 * clock
1 0 1/4 * clock
1 1/4 * clock 1/2 * clock
MPC533 Reference Manual
Tdt
CS Address to WE/BE
WE/BE or Negated to
OE Add/Data
Asserted Invalid
3/4 * clock
3/4 * clock
3/4 * clock
3/4 * clock 1/4 * clock
3/4 * clock 1/4 * clock
3/4 * clock 1/4 * clock
3/4 * clock 1/2 * clock
3/4 * clock 1/2 * clock
OE
Total
Negated to
Number of
Add/Data
Cycles
Invalid
X 1/4 * clock 2 + SCY
X 1/4 * clock 2 + SCY
X 1/4 * clock 2 + SCY
X 2 + SCY
X 2 + SCY
X 2 + SCY
X 2 + SCY
X 2 + SCY
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