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SS1621
p. 12
Last update: 2008-06-03 04:36
READ-MODIFY-WRITE mode (command code: 101 )
READ-MODIFY-WRITE mode (successive address accessing)
Command mode (command code: 100 )
Mode (data and command mode)
Note: It is recommended that the host controller should read in the data from the DATA line be-
tween the rising edge of the RD line and the falling edge of the next RD line.
D0 D1 D2 D3
A3 A2 A1 A0
A5 A4
0
1
1
0
11
Memory Address 1 (MA1) Data (MA1) Data (MA1)
Memory Address 2 (MA2) Data (MA2) Data (MA2)
DATA
D0 D1 D2 D3
A3 A2 A1 A0
A5 A4
D0 D1 D2 D3 D0 D1 D2 D3
CS
WR
RD
Memory Address (MA) Data (MA)
Data (MA+1)
Data (MA+2) Data (MA+2)
DATA
A3 A2 A1 A0
A5 A4
0
1
1
D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3
Data (MA)
Data (MA+1)
D0 D1 D2
CS
WR
RD
Command 1
C2 C1 C0
C6 C5 C4 C3
C8 C7
0
1
0
DATA
C2 C1 C0
C6 C5 C4 C3
C8 C7
Command…
Command i
Command
or
Data Mode
CS
WR
Command
or
Data Mode
DATA
Address & Data
Command
or
Data Mode
Address & Data
Command
or
Data Mode
Address & Data
CS
WR
RD