W83626F Datasheet, PDF (15/34 Pages) Winbond – LPC-to-ISA Bridge

LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
Bit 0:
GPIO Function Activity.
= 1 All GPIO functions are activated . All registers (CR 11,12,13,14,15,16)
about GPIO function will be set default value .
= 0 All GPIO functions are inactive except the signals by power-on setting.
If any one of CR04 bit [7..0] was set non-GPIO function,the bit just affect
which was set GPIO function .
CR11, CR12 (Reserved Register For GPIO Control Without Configure Mode Entry )
The register is programmable when the bit 0 of CR10 is set to “ 1 “ and affected by
the settings of CR14 ( I/O Selectioin ) and CR16 ( Inversion ).
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.
For example:
Define address 50h in CR11 and 01h in CR12 after reset.
bit 0= -GPIO0 (=0 low state,
=1 Hi state )
bit 1=-GPIO1 (=0 low state
=1 Hi state)
,bit 2=GPIO2,.........,bit 7=GPIO7 the same definition as bit 0.
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]
CR13 (GPIO0-GPIO7 Address Decoder Rester, Default 0x00 )
The register is programmable when the bit 0 of CR10 is set to “ 1 “.
Bit 7:
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.
- 13 -
Publication Release Date: Feb 2000
Revision 0.50