Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface
Table 20.8 GPIO Direction Register C
N/A
HOST ADDRESS
8051 ADDRESS
POWER
0x7F1E
VCC1
0x00
DEFAULT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
-
-
-
-
-
-
-
-
HOST TYPE
8051 TYPE
R/W
0
R/W
0
R/W
R/W
R/W
R/W
R/W
R/W
GPIO21
1=output
0=input
GPIO20
1=output
0=input
GPIO19
1=output
0=input
GPIO18
1=output
0=input
GPIO17
1=output
0=input
GPIO16
1=output
0=input
BIT NAME
Table 20.9 GPIO Output Register C
N/A
HOST ADDRESS
8051 ADDRESS
POWER
0x7F1F
VCC1
0x00
DEFAULT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
-
-
-
-
-
-
-
-
HOST TYPE
8051 TYPE
BIT NAME
R/W
0
R/W
0
R/W
R/W
R/W
R/W
R/W
R/W
GPIO21 GPIO20 GPIO19 GPIO18 GPIO17 GPIO16
SMSC LPC47N350
223
Revision 1.1 (01-14-03)
DATASHEET
SMSC [ SMSC CORPORATION ]
