Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface
Table 20.4 GPIO Input Register A
N/A
HOST ADDRESS
8051 ADDRESS
POWER
0x7F1A
VCC1
N/A
DEFAULT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
-
-
-
-
-
-
-
-
HOST TYPE
8051 TYPE
R
R
R
R
R
R
R
R
status of
status
status
of pin
GPIO5
status
of pin
GPIO4
status
of pin
GPIO3
status
of pin
GPIO2
status
of pin
GPIO1
status
of pin
GPIO0
BIT NAME
pin GPIO7 of pin
GPIO6
Table 20.5 GPIO Direction Register B
N/A
HOST ADDRESS
8051 ADDRESS
POWER
0x7F1B
VCC1
0x00
DEFAULT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
-
-
-
-
-
-
-
-
HOST TYPE
8051 TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
GPIO15
1=output
0=input
GPIO14 GPIO13 GPIO12 GPIO11
GPIO10 GPIO9
GPIO8
BIT NAME
1=output 1=output 1=output 1=output 1=output 1=output 1=output
0=input
0=input
0=input
0=input
0=input
0=input
0=input
See Note 2.3.
SMSC LPC47N350
221
Revision 1.1 (01-14-03)
DATASHEET
SMSC [ SMSC CORPORATION ]
