W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 31
W90220F
Manufacturer Part Number
W90220F
Description
Pa-risc Embedded Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W90220F.pdf
(79 pages)
- Current page: 31 of 79
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The above information is the exclusive intellectual property of Winbond Electroncs Corp. and shall not be dsiclosed or distributed or reproduced without permission from
Winbond.
31
Bits 2-3 DRAM Bank 2's RAM type & Bank-size
Bits 4-5 DRAM Bank 1's RAM type & Bank-size
Bits 6-7 DRAM Bank 0's RAM type & Bank-size
RAM Configuration_1 Register (RAMconf1)
Index : 0x29
Bit 0
Bit 1
Bit 2
PAREN
0
(The definition is the same as RAMconf0[0:1])
(The definition is the same as RAMconf0[0:1])
(The definition is the same as RAMconf0[0:1])
Enable parity-check of memory data bus
DRAM bank_3 enable
DRAM bank_2 enable
Note * : Don't care pins (only for testing issue).
0 = Disable parity check
1 = Enable parity check
0 = Disable
1 = Enable
2 Banks
4 Banks
RAMen3
MA5
MA4
MA3
MA2
MA1
MA0
1
** : A0 is MSB and A31is LSB.
Bank Selector
RAMen2
A17
A16
A15
A14
A13
A12
A10, A11
Read/Write
2
A11
A26
A25
A24
A23
A22
A21
RAMen1
3
Bank Selector
A17
A16
A15
A14
A13
A12
A8, A9
A9
RAMen0 DIS384K
A26
A25
A24
A23
A22
A21
4
Power-on Default : 0x0
Bank Selector
A17
A16
A15
A14
A13
A12
A6, A7
A7
5
A26
A25
A24
A23
A22
A21
Bank Selector
FW
A17
A16
A15
A14
A13
A12
6
A4, A5
A5
A26
A25
A24
A23
A22
A21
FR
7
W90220F
Version 0.84
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