Supero SUPER P5MMA2, User Manual

Page: 51 / 64

2-19
Chapter 2: Installation
USB Connectors
USB stands for Universal Serial Bus. It simplifies PC peripheral
connectivity. Its robust serial interface supports low and medium
speed transfers which can either be isochronous or asynchronous.
The USB ports are located on J37 and J38. See Table 2-32 for pin
definitions of a USB port.
Table 2-32. Universal Serial Bus Pin Definitions
Pin J37 Pin J38
Number Function Number Function
1 +5V 1 +5V
2 P0- 2 P0-
3 P0+ 3 P0+
4 GND 4 GND
5 N/A 5 Key
Power On/Off State
Refer to Table 2-33 on how to set JP24 (P5MMA98/P5MMA2) or JP27
(P5MMS98/P5MMS2). Save Power Down (PD) State is the default
and is used when you want the system to be in power off state the
first time you apply power to the system or when the system comes
back from AC power failure. PIIX4 control is used if you want the
system to be in power on state the first time you apply power to the
system or when the system comes back from AC power failure.
Table 2-33. JP20 Pin Definitions
Connector J u m p e r
N u m b e r Position Function
JP24/ 1-2 PIIX4 Ctrl
JP27 2-3 Save PD State