Rainbow Electronics W90N745CDG - Manual (Page 69)

W90N745CD/W90N745CDG
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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
BITS DESCRIPTION
[31:19] BASADDR
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.
[18:16] SIZE
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 RESERVED
1 1 0 RESERVED
1 1 1 RESERVED
[15:12] RESERVED -