w83626f Winbond Electronics Corp America, w83626f Datasheet - Page 14

• Manufacturer Part Number: w83626f
• Description: Lpc To Isa Bridge Set
• Manufacturer: Winbond Electronics Corp America

User defines port address to control GPIO functions. To control GPIO state without entry
configure mode. SA [0..7] can be defined on the bit [0..7] of CR11 and SA [8..15] on the bit
[ 0..7] of CR12.
CR13 (GPIO0-GPIO7 Address Decoder Rester, Default 0x00)
The register is programmable when the bit 0 of CR10 is set to “ 1 “.
Bit 7:
Bit 6 -Bit 4:
For example:
Address Decoder 2
=1 Enable address decoder .Generate a CS# signal to GPIO port which
decided by bit[6..4] ,the specify address in CR34 and CR35 and mask
range in CR 33.
=0 Disable address decoder.
Address Decoder 2 Output Selection.
Define which GP port as address decoder depended on CR33, CR34 and CR35.
= 000 Selected GPIO 0 as CS#
= 001 Selected GPIO 1 as CS#
= 010 Selected GPIO 2 as CS#
= 011 Selected GPIO 3 as CS#
= 100 Selected GPIO 4 as CS#
= 101 Selected GPIO 5 as CS#
= 110 Selected GPIO 6 as CS#
= 111 Selected GPIO 7 as CS#
Define address 50h in CR11 and 01h in CR12 after reset.
,bit 2=GPIO2,.........,bit 7=GPIO7 the same definition as bit 0.
bit 0= -GPIO0 (=0 low state,
bit 1=-GPIO1 (=0 low state
Set CR14 to “00h “(output port) and CR16 to “ 00h “ (incoming/outgoing)
-o 150 aa ------(10101010) b indicated GP7,GP5,GP3 and GP1 are Hi state.
-o 150 55 ------(01010101) b indicated GP6,GP4,GP2,and GP0 are Hi state.
- i 150
------show all states of GPIO[7..0]
=1 Hi state)
=1 Hi state)
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W83626F/W83626D/W83626G
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