Connecting the PCI Express Mini Card
Page 15
Table 6.
Signal mnemonics of 52-pin PCI Express Mini Card connector
Signal
Direction
Function
Power
GND
-
Ground
+3.3Vaux
out
3.3V source
1.5V
out
1.5V source
SIM card
1
1
Signals in grey font are not supported.
UIM_PWR
in
SIM card power
UIM_DATA
in/out
SIM card data
UIM_CLK
in
SIM card clock
UIM_RST
in
SIM card reset
UIM_VPP
in
not connected
PCI
Express
1
REFCLK-
out
PCI Express differential reference
clock
PERn0/PERp0
in
PCI Express receive signals
PETn0/PETp0
out
PCI Express transmit signals
Auxiliary
Signals
1
CLKREQ#
in
Clock request
PERST#
out
Reset for the Mini Card
W_DISABLE#
out
Wireless disable
WAKE#
in
Wake signal
SMB_CLK
out
System management bus clock
SMB_DATA
in/out
System management bus data
USB
USB_D-
in/out
USB line
USB_D+
in/out
USB line
Communic
ations -
specific
signals
1
LED_WWAN#
in
not connected
LED_WLAN#
in
not connected
LED_WPAN#
in
not connected
Optional
2
2
These signals are only available as an option.
WHEELTICK
in
Optional WHEELTICK input
TIMEPULSE
out
1PPS / TIMEPULSE output
