5
The following section illustrate signal pin-outs for the system connector.
2.3 Pin Assignment
Pin#
Pin Name
Description
Pin#
Pin Name
Description
1
WAKE_L(NA)
Output and open Drain
active Low signal. This
signal is used to request
that the system return
from a sleep/suspended
state to service a
function initiated wake
event.
2
+3.3V
+3.3V
3
No Connection
-
4
GND
GND
5
No Connection
-
6
No Connection
-
7
CLKREQ_L
Output for reference
clock request signal
8
No Connection
-
9
GND
GND
10
No Connection
-
11
REFCLK-
Input signal for PCI
Express differential
reference clock (100
MHz)
12
No Connection
-
13
Input signal for PCI
Express differential
reference clock (100
MHz)
14
No Connection
-
15
GND
GND
16
No Connection
-
17
No Connection
-
18
GND
GND
19
No Connection
-
20
W_DISABLE_L
Input and active low
signal. This signal is
used by the system to
disable radio operation
on add-in cards that
implement radio
frequency applications.
When implemented, this
signal requires a pull-up
resistor on the card
21
GND
GND
22
PERST_L
Input signal for
