UltraCade Technologies - ITG-IO User Documentation version 02B - 7/23/2005
Document 040-ITGIOMA-UCT © & ™ 2003-05 UltraCade Technologies. All Rights Reserved
9
JAMMA Interface
The JAMMA interface is the standard interface for arcade motherboards. To simplify the
replacement of single game non-upgradeable arcade machines with PC based systems, the ITG-IO
allows the old motherboard to simply be unplugged and the PC plugged in. All the old controls will
flow through the same JAMMA interface and be converted by the ITG-IO into USB packets.
The table below shows the standard use for each of the JAMMA pins, and how it is attached to the
ITG-IO. For example, the video green pin on JAMMA pin S12 is produced from the video green
input; player 1’
s start button on JAMMA pin C17 is sent to the PC via USB in the fifth bit of the
second byte. The only ITG-IO output routed through the JAMMA connector is the primary coin
counter, which is written from the PC via USB in the seventh bit of the second output byte.
PCB
Side
Pin
Standard
Usage
Connect or
USB Byte.Bit
PCB
Side
Pin
Standard
Usage
Connect or
USB Byte/Bit
Solder
1
Gnd
Gnd
Component 1
Gnd
Gnd
Solder
2
Gnd
Gnd
Component 2
Gnd
Gnd
Solder
3
+5v
+5v
Component 3
+5v
+5v
Solder
4
+5v
+5v
Component 4
+5v
+5v
Solder
5
-5v
n/c
Component 5
-5v
n/c
Solder
6
+12v
+12v
Component 6
+12v
+12v
Solder
7
KEY
KEY
Component 7
KEY
KEY
Solder
8
coin counter 2 n/c
Component 8
coin counter 1
Output 1.6
Solder
9
coin lock 2
n/c
Component 9
coin lock 1
n/c
Solder
10
left speaker -
n/c
Component 10
left s
n/c
Solder
11
right speaker - n/c
Component 11
right s
n/c
Solder
12
green
green
Component 12
red
red
Solder
13
comp sync
comp sync
Component 13
blue
blue
Solder
14
service 1
USB 1.6
Component 14
video ground
video ground
Solder
15
tilt
USB 1.6
Component 15
test 1
USB 1.6
Solder
16
p2 coin
USB 1.7
Component 16
p1 coin
USB 1.7
Solder
17
p2 start
USB 1.3
Component 17
p1 start
USB 0.4
Solder
18
p2 up
USB 0.7
Component 18
p1 up
USB 0.0
Solder
19
p2 down
USB 1.0
Component 19
p1 down
USB 0.1
Solder
20
p2 left
USB 1.1
Component 20
p1 left
USB 0.2
Solder
21
p2 right
USB 1.2
Component 21
p1 right
USB 0.3
Solder
22
p2 button 1
n/c
Component 22
p1 button 1
n/c
Solder
23
p2 button 2
USB 1.4
Component 23
p1 button 2
USB 0.5
Solder
24
p2 button 3
USB 1.5
Component 24
p1 button 3
USB 0.6
Solder
25
p2 button 4
n/c
Component 25
p1 button 4
n/c
Solder
26
service 2
USB 1.6
Component 26
test 2
USB 1.6
Solder
27
Gnd
Gnd
Component 27
Gnd
Gnd
Solder
28
Gnd
Gnd
Component 28
Gnd
Gnd
