Rainbow Electronics W90N740 User Manual
Page 48
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W90N740
- 44 -
ROM/Flash Control Register （ROMCON）
Register Address R/W
Description
Reset
Value
ROMCON
0xFFF0.1004
R/W
ROM/FLASH control register
0x0000.0XFC
31
30
29
28
27
26
25
24
BASADDR
23
22
21
20
19
18
17
16
BASADDR SIZE
15
14
13
12
11
10
9
8
RESERVED tPA
7
6
5
4
3
2
1
0
tACC
BTSIZE
PGMODE
BASADDR [31:19] ：Base address pointer of ROM/Flash bank
The start address is calculated as ROM/Flash bank base pointer << 18. The base address pointer
together with the “SIZE” bits constitutes the whole address range of each bank.
SIZE [18:16] ：The size of ROM/FLASH memory
SIZE [10:8]
Byte
0 0 0
256K
0 0 1
512K
0 1 0
1M
0 1 1
2M
1 0 0
4M
1 0 1
8M
1 1 0
16M
1 1 1
32M
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