Mobile Intel
®
915GME Express Chipset
April 2007
Development Kit User’s Manual
Order Number: 317230-001US
45
Hardware Reference—Mobile Intel
®
915GME Express Chipset
4.6.2.3
ADD2 Slot
When not being used for PCI Express, the x16 slots can be used for Serial Digital Video
Out (SDVO), which is also sometimes referred to as ADD2 (Advanced Digital Display
2
nd
generation). SDVO cards provide for a third party vendor secondary graphics add-
on such as a digital panel interface. It is important to note that the Mobile Intel
®
915GME Express Chipset does not support lane reversal of its SDVO interface and
since the slot is routed lane reversed, a special SDVO card which un-reverses the lanes
must be used. These cards are sometimes referred to as ADD2-R (“R” for reversed)
cards.
Note:
ADD2-N (“N” for normal) cards are not compatible with the board.
A70
GND
B70
LANE 13 (T+)
A71
GND
B71
LANE 13 (T-)
A72
LANE 13 (R+)
B72
GND
A73
LANE 13 (R-)
B73
GND
A74
GND
B74
LANE 14 (T+)
A75
GND
B75
LANE 14 (T-)
A76
LANE 14 (R+)
B76
GND
A77
LANE 14 (R-)
B77
GND
A78
GND
B78
LANE 15 (T+)
A79
GND
B79
LANE 15 (T-)
A80
LANE 15 (R+)
B80
GND
A81
LANE 15 (R-)
B81
PRST2#
A82
GND
B82
RSVD
Table 13.
PCI Express (x16) Pinout (J6C1) (Sheet 3 of 3)
Pin
Description
Pin
Description
Table 14.
ADD2 Slot (J6C1) (Sheet 1 of 3)
Pin
Number
A
B
1
N/C
12 V
2
12 V
12 V
3
12 V
Reserved
4
GND
GND
5
N/C
N/C
6
N/C
N/C
7
N/C
GND
8
N/C
3.3 V
9
3.3 V
N/C
10
3.3 V
N/C
11
RESET
N/C
Key
12
GND
Reserved
13
N/C
GND
