LPC47M142-NC Standard Microsystems (SMSC), LPC47M142-NC Datasheet - Page 168

• Manufacturer Part Number: LPC47M142-NC
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M142-NC

• Lead Free Status / RoHS Status: Not Compliant

SMSC DS – LPC47M14X
CLKI32
Default = 0x00
on VTR POR
KRST_GA20
Default = 0x00
on VCC POR,
VTR POR and
HARD RESET
Bits[6:5] reset on
VTR POR only
NAME
NAME
Table 72 – KYBD, Logical Device 7 [Logical Device Number = 0x07]
Table 73 – PME, Logical Device A [Logical Device Number = 0x0A]
REG INDEX
0xF1 -
0xFF
REG INDEX
0xF0
R/W
0xF0
R/W
Bit[7:2] Reserved
Bit [1]
Bit [0]
Note:
changed, the Fan Tachometer, the Wake on Specific
Key, and the LED blink will not function if the 14MHz
clock is removed.
KRESET and GateA20 Select
Bit[7] Polarity Select for P12
Bit[6] M_ISO. Enables/disables isolation of mouse
signals into 8042. Does not affect MDAT signal to
mouse wakeup (PME) logic.
1=block mouse clock and data signals into 8042
0= do not block mouse clock and data signals into
8042
Bit[5] K_ISO. Enables/disables isolation of keyboard
signals into 8042.
keyboard wakeup (PME) logic.
1=block keyboard clock and data signals into 8042
0= do not block keyboard clock and data signals into
8042
Bit[4] MLATCH
MINT (default)
Bit[3] KLATCH
KINT (default)
Bit[2] Port 92 Select
Bit[1] Reserved
Bit[0] Reserved
Reserved - read as ‘0’
= 0
= 1 MINT is the latched 8042 MINT
= 0
= 1 KINT is the latched 8042 KINT
= 0 P12 active low (default)
= 1 P12 active high
= 0 Port 92 Disabled
= 1 Port 92 Enabled
MINT is the 8042 MINT ANDed with Latched
KINT is the 8042 KINT ANDed with Latched
SPEKEY_EN. This bit is used to turn the logic
for the “wake on specific key” feature on and
off. It will disable the 32kHz clock input to the
logic when turned off. The logic will draw no
power when disabled.
0 = “Wake on specific key” logic is on
1 = “Wake on specific key” logic is off
Bit [0] should always be zero.
SMSC Reserved (default = 0)
Page 168
(default)
DEFINITION
DEFINITION
Does not affect KDAT signal to
If this is
STATE
NOTES
Note 2
Note 3
Note 1
Eng.
Eng.
Rev. 03/19/2001