Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface
Table 12.2 External System Wake-Up Events (continued)
WAKE-UP
PIN
EVENTS
ACTIVE EDGE
Programmable
REGISTER
DESCRIPTION
GPIO13
WK_SE17
Wake Up Src5
(0x7F5E) [D7]
General Purpose Pin
GPIO14
GPIO15
GPIO16
GPIO17
WK_SE20
WK_SE21
WK_SE22
WK_SE23
WK_SE27
WK_SE24
WK_SE25
WK_SE26
TACH1
Wake Up Src6
(0x7F63) [D0]
Wake Up Src6
(0x7F63) [D1]
Wake Up Src6
(0x7F63) [D2]
Wake Up Src6
(0x7F63) [D3]
KSO13/GPI
Wake Up Src6
(0x7F63) [D7]
Keyboard Scan
O18
Output/General Purpose Pin
GPIO19
Wake Up Src6
(0x7F63) [D4]
General Purpose Pin
GPIO20/
PS2CLK
Wake Up Src6
(0x7F63) [D5]
General Purpose Pin/
PS2 Serial Clock
GPIO21/
PS2DAT
Wake Up Src6
(0x7F63) [D6]
General Purpose Pin/
PS2 Serial Data
FAN_TACH1
When the output of the fan
pulse counter threshold
detector is asserted.
Wake Up Src 7
(0x7F64) [D0]
When the fan speed drops
below a predetermined
value.
FAN_TACH2
TACH2
When the output of the fan
pulse counter threshold
detector is asserted.
Wake Up Src 7
(0x7F64) [D1]
When the fan speed drops
below a predetermined
value.
LGPIO50
LGPIO51
LGPIO52
LGPIO53
LGPIO50
LGPIO51
LGPIO52
LGPIO53
Either Edge
Either Edge
Either Edge
Either Edge
Wake Up Src 8
(0x7F55) [D0]
LPC/8051 addressable
GPIOs
Wake Up Src 8
(0x7F55) [D1]
Wake Up Src 8
(0x7F55) [D2]
Wake Up Src 8
(0x7F55) [D3]
Note: All alternate functions of wake-capable GPIO primary function pins can generate wake events.
Not all GPIO pins can generate wake events (See Table 20.1, “LPC47N350 GPIO Types,” on
page 217).
Revision 1.1 (01-14-03)
142
SMSC LPC47N350
DATASHEET
SMSC [ SMSC CORPORATION ]
