
8-12
MCF5249UM
MOTOROLA
Data Transfer Operation
Figure 8-8 Line Read Burst (one wait cycle)
Figure 8-9 shows a line read burst with no wait cycles. In this example, the external device executes a
basic read cycle while determining that a line is being transferred.
Figure 8-9 Line Read Burst (no wait cycles)
8.5.5.3
Line Write Bus Cycles
Figure 8-11 shows a line access write with zero wait states.
Note:The bus cycle begins similar to a basic write bus cycle with data being driven one
clock after the address. Also notice that the next pipelined burst data is driven one
cycle after the write data has been registered (on the rising edge of S6). Each
subsequent pipelined write data burst will be a single cycle.
CS remains asserted throughout the burst transfer.