Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface
Table 14.5 SMSC PS/2 Transmit Registers (A - D)
N/A
HOST ADDRESS
8051 ADDRESS
0x7F41
(CHAN A),
0x7F45
(CHAN B),
0x7F49
(CHAN C),
0X7F4D
(CHAN D)
VCC2
0x00
POWER
DEFAULT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
-
-
-
-
-
-
-
-
HOST TYPE
8051 R/W
BIT NAME
W
W
W
W
W
W
W
W
Transmit Data
14.3.3 SMSC PS/2 Control Registers
Table 14.6 SMSC PS/2 Control Registers (A - D)
N/A
HOST ADDRESS
8051 ADDRESS
0x7F42
(CHAN A),
0x7F46
(CHAN B),
0x7F4A
(CHAN C),
0x7F4E
(CHAN D)
VCC2
0x40
POWER
DEFAULT
BIT
D7
D6
D5
D4
D3
D2
D1
D0
-
-
-
-
-
-
-
-
HOST TYPE
8051 R/W
BIT NAME
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
WR_CLK
WR_DATA
STOP
PARITY
PS2_EN
PS2_T/R
Default = 0x40 on VCC2 POR only.
SMSC LPC47N350
159
Revision 1.1 (01-14-03)
DATASHEET
SMSC [ SMSC CORPORATION ]
