Rainbow Electronics W90P710CDG User Manual

Page 72

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W90P710CD/W90P710CDG

- 72 -

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

8M

1 1 0

16M

1 1 1 RESERVED

[15:12]

RESERVED

-

[11:8] tPA

Page mode access cycle time

tPA[11:8] MCLK

tPA[11:8] MCLK

0 0 0 0 1 1 0 0 0 10
0 0 0 1 2 1 0 0 1 12
0 0 1 0 3 1 0 1 0 14
0 0 1 1 4 1 0 1 1 16
0 1 0 0 5 1 1 0 0 18
0 1 0 1 6 1 1 0 1 20
0 1 1 0 7 1 1 1 0 22
0 1 1 1 8 1 1 1 1 24

[7:4] tACC

Access cycle time

tACC[11:8] MCLK tACC[11:8] MCLK

0 0 0 0

1

1 0 0 0 10

0 0 0 1

2

1 0 0 1 12

0 0 1 0

3

1 0 1 0 14

0 0 1 1

4

1 0 1 1 16

0 1 0 0

5

1 1 0 0 18

0 1 0 1

6

1 1 0 1 20

0 1 1 0

7

1 1 1 0 22

0 1 1 1

8

1 1 1 1 24

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