W83637HF Datasheet, PDF (43/149 Pages) Winbond – LPC I/O

W83637HF
6.8 Registers and RAM
Address Port and Data Port are set in the register CR60 and CR61 of Device B which is Hardware
Monitor Device. The value in CR60 is high byte and that in CR61 is low byte. For example, setting
CR60 to 02 and CR61 to 90 cause the Address Port to be 0x295 and Data Port to be 0x296.
Address Port (Port x5h)
Address Port:
Power on Default Value
Attribute:
Size:
Port x5h
00h
Bit 6:0 Read/write , Bit 7: Reserved
8 bits
7 6 5 4 32 1 0
Data
Bit7: Reserved
Bit 6-0: Read/Write
Bit 7
Reserved
(Power On default 0)
Bit 6
A6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Address Pointer (Power On default 00h)
A5
A4
A3
A2
A1
Data Port (Port x6h)
Data Port:
Power on Default Value
Attribute:
Size:
Port x6h
00h
Read/write
8 bits
7 6 54321 0
Bit 0
A0
Data
Bit 7-0: Data to be read from or to be written to RAM and Register.
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Publication Release Date: June 25, 2003
Revision 1.3