W83626F Datasheet, PDF (18/34 Pages) Winbond – LPC-to-ISA Bridge

LPC TO ISA BRIDGE SET
W83626F/W83626D
Bit [3..0] indicate the version of the chip.
PRELIMINARY
CR30 (Mask Range of Address Decoder 1 Register, Default 0x00)
This register is used to mask address bits (A7~A0) for specify address decoder, if the corresponding bit
of this register is set to a 1, the corresponding address bit(A7~A0) is ignore by the specify address
decoder.
For example: If the decoding range is 0x3F8 ~ 0x3FF,you can set 0x3F8 to CR 31, 32 and 07h to
CR30 .
CR31, 32 (Address Decoder 1 Specification Register , Default 0x00)
This register contains the address for specify decoder.
CR 31 Bit [7..0] are used to define low byte of specity address.
CR 32 Bit [7..0] are used to define high byte of specify address.
For example: Decoding address was set to be 0x3F5h and write F5h to CR 31 and 03h to CR 32 .
CR33 ((Mask Range of Address Decoder 2 Register, Default 0x00)
This register is used to mask address bits(A7~A0) for specify address decoder , if the corresponding bit
of this register is set to a 1, the corresponding address bit(A7~A0) is ignore by the specify address
decoder .
For example: If the decoding range is 0x3F8 ~ 0x3FF,you can set 0x3F8 to CR 34, 35 and 07h to
CR33 .
CR34, 35 Address Decoder 2 Specification Register , Default 0x00)
This register contains the address for specify decoder.
CR 34 Bit [7..0] are used to define low byte of specity address.
CR 35 Bit [7..0] are used to define high byte of specify address.
For example: Decoding address was set to be 0x3F5h and write F5h to CR34 and 03h to CR35.
This register contains the address for specify decoder.
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Publication Release Date: Feb 2000
Revision 0.50