Rev. 2.00, 09/03, page 168 of 690
Bit
Bit
Name
Initial
Value
R/W
Description
10
9
8
7
WR3
WR2
WR1
WR0
1
0
1
0
R/W
R/W
R/W
R/W
Number of Access Wait Cycles
Specify the number of cycles that are necessary for read/write
access.
0000: 0 cycle
0001: 1 cycle
0010: 2 cycles
0011: 3 cycles
0100: 4 cycles
0101: 5 cycles
0110: 6 cycles
0111: 8 cycles
1000: 10 cycles
1001: 12 cycles
1010: 14 cycles
1011: 18 cycles
1100: 24 cycles
1101: Setting prohibited
1110: Setting prohibited
1111: Setting prohibited
6
WM
0
R/W
External Wait Mask Specification
Specify whether or not the external wait input is valid. The
specification by this bit is valid even when the number of
access wait cycle is 0.
0: External wait is valid
1: External wait is ignored
5 to 2
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
1
0
HW1
HW0
0
0
R/W
R/W
Delay Cycles from RD,
WEn
negation to Address,
CSn
negation
Specify the number of delay cycles from RD and
WEn
negation to address and
CSn
negation.
00: 0.5 cycles
01: 1.5 cycles
10: 2.5 cycles
11: 3.5 cycles
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