W90220F Winbond Electronics Corp America, W90220F Datasheet - Page 25

• Manufacturer Part Number: W90220F
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

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.
25
5.2
5.2.1
There are 24 8-bit registers included in the memory (ROM/DRAM) controller. Access to these registers
are through a 8-bit "index" port and a 8-bit data port. The index port address is 0xf0000022 and the data port
address is 0xf0000023. The memory controller supports ROM, Flash, EDO- and Fast-page-mode DRAM.
Table 5.2.1-1 : MEMC Register Map
Index
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x0a
0x0b
0x2a
0x2b
REGISTER DEFINITIONS
MEMORY CONTROLLER REGISTERS
ROMconf1
ROMconf2
ROMconf3
RAMconf1
RAMconf2
RAMconf3
ROMconf0
RAMconf0
Symbol
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
ROM bank 0 base register [0:7]
ROM bank 0 base register [8:15]
ROM bank 1 base register [0:7]
ROM bank 1 base register [8:15]
ROM bank 2 base register [0:7]
ROM bank 2 base register [8:15]
ROM bank 3 base register [0:7]
ROM bank 3 base register [8:15]
ROM Configuration register 0 [0:7]
ROM Configuration register 1 [0:7]
ROM Configuration register 2 [0:7]
ROM Configuration register 3 [0:7]
RAM bank 0 base register [0:7]
RAM bank 0 base register [8:15]
RAM bank 1 base register [0:7]
RAM bank 1 base register [8:15]
RAM bank 2 base register [0:7]
RAM bank 2 base register [8:15]
RAM bank 3 base register [0:7]
RAM bank 3 base register [8:15]
RAM Configuration register 0 [0:7]
RAM Configuration register 1 [0:7]
RAM Configuration register 2 [0:7]
RAM Configuration register 3 [0:7]
(IO base (BA) : 0xf0000000)
W90220F
Version 0.84