Jameco Electronics 3000 Manuale Utente
User’s Manual
217
Figure 16-2 and Figure 16-3 illustrate the memory read and write cycles. The Rabbit 3000
operates at 2 clocks per bus cycle plus any wait states that might be specified.
operates at 2 clocks per bus cycle plus any wait states that might be specified.
Figure 16-2. Memory Read and Write Cycles
Tadr
Tadr
Memory Read (no wait states)
CLK
A[19:0]
Memory Write (no extra wait states)
CLK
A[19:0]
valid
T1
T2
T1
Tw
T2
valid
TOEx
TOEx
D[7:0]
valid
Thold
Tsetup
/CSx
/OEx
TCSx
TCSx
valid
D[7:0]
TDHZV
TDVHZ
/CSx
/WEx
TCSx
TCSx
TWEx
TWEx