Rev. 2.00, 09/03, page 169 of 690
2. Burst ROM
CS0WCR
Bit
Bit
Name
Initial
Value
R/W
Description
31 to 18
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
17
16
BW1
BW0
0
0
R/W
R/W
Number of Burst Wait Cycles
Specify the number of wait cycles to be inserted between the
second or later access cycles in burst access.
00: 0 cycle
01: 1 cycle
10: 2 cycles
11: 3 cycles
15 to 11
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
10
9
8
7
W3
W2
W1
W0
1
0
1
0
R/W
R/W
R/W
R/W
Number of Access Wait Cycles
Specify the number of wait cycles to be inserted in the first
read/write access cycle.
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
Содержание SH7705
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