Rainbow Electronics AT75C220 - Manual (Page 25)

AT75C220
25
Figure 8. Read with Burst Length of 4 and CAS Latency of 2
Figure 9. Read with Burst Length of 2 and CAS Latency of 2
BCLK
BA
BTRAN
BWAIT
SDRAM CMD
addr
sdmc_data
BD
A0 A2 A3 A1
NSEQ SEQ SEQ SEQ NSEQ
NOP PRE NOP ACT NOP READ READ READ READ NOP NOP NOP
BANK ROW COL0 COL1 COL2 COL3
D0 D1 D2 D3
D0 D1 D2 D3
BCLK
BA
BTRAN
BWAIT
SDRAM CMD
Addr
sdmc_data
BD
A0 A2 A3 A1
NSEQ SEQ SEQ SEQ
NOP PRE NOP ACT NOP READ READ READ READ NOP NOP PRE
BANK ROW COL0 COL1 COL2 COL3
D0 D1 D2 D3
D0 D1 x x
BANK