Microcontroller User's Manual

13-14 MCF5282 User’s Manual MOTOROLA
Misaligned Operands
Figure 13-17 shows a line burst write with one wait-state insertion.
Figure 13-17. Line Write Burst (3-2-2-2) with One Wait State
Figure 13-18 shows a burst-inhibited line write. The external device executes a basic write
cycle while determining that a line is being transferred. The external device uses fast
termination to end each subsequent transfer.
Figure 13-18. Line Write Burst-Inhibited
13.5 Misaligned Operands
Because operands can reside at any byte boundary, unlike opcodes, they are allowed to be
misaligned. A byte operand is properly aligned at any address, a word operand is
A[31:0]
R/W
, TIP
TS
CSn, OE, BSn
D[31:0]
TA
Write
Write
Write
Write
S0 S1 S2 S3 S4 S5 S10S9S8S7S6 S11
WS
WS WS WS
CLKOUT
SIZ[1:0]
A[31:0]
R/W
, TIP
SIZ[1:0]
TS
D[31:0]
TA
Line Longword
Basic Fast Fast Fast
A[3:2] = 00 A[3:2] = 01 A[3:2] = 10 A[3:2] = 11
Write
Write
Write
Write
S0 S1 S2 S3 S4 S5 S0 S1 S4 S5 S0 S1 S4 S5 S0 S1 S4 S5
CLKOUT
CS
n
OE, BSn