Rainbow Electronics W90N740 - Manual (Page 48)

W90N740
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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