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Connectors CN3, CN5, CN6, and CN7 – USB Ports 2 through 5
Connectors CN3, CN5, CN6, and CN7 are industry-standard Type A USB connectors. They use
the standard pinout as defined by the USB specification. Each connector has the ability to supply
up to 500mA of current to a USB device at +5.0V.
The relationship between connectors and USB ports is described in the connector and switch
location diagram in the previous section.
Note:
When connecting a USB device to CN3, CN5, CN6, or CN7, be certain that the
corresponding pins on JP6 and JP7 are unused.
Connector JP6 – USB Ports 4 & 5 (Alternate Connection)
Connector JP6 provides an alternate method for connecting to USB ports 4 and 5. Instead of
plugging a USB device directly into CN6 or CN7, one can attach a standard PC motherboard
USB header to JP6. This gives one the ability to mount the USB connectors at a different
location, away from the PC/104 stack. Since JP6 shares the same physical link as CN6 and
CN7, be sure to not connect anything to those ports when JP6 is in use.
The pins of JP6 are arranged in the following pattern:
Pin 9
Pin 7
Pin 5
Pin 3
Pin 1
Pin 10
Pin 8
Pin 6
Pin 4
Pin 2
Note:
Pin 1 can be identified by a square solder pad. Pins 2 – 10 have round solder pads.
The pins of JP6 have the following functions:
Pin 1
USB Port 5 Vcc
Pin 2
USB Port 4 Vcc
Pin 3
USB Port 5 Data -
Pin 4
USB Port 4 Data -
Pin 5
USB Port 5 Data +
Pin 6
USB Port 4 Data +
Pin 7
Ground
Pin 8
Ground
Pin 9
Ground
Pin 10
Ground
Connector JP7 – USB Ports 2 & 3 (Alternate Connection)
Connector JP7 provides an alternate method for connecting to USB ports 2 and 3, similar to JP6.
Since JP7 shares the same physical link as CN6 and CN7, be sure to not connect anything to
those ports when JP7 is in use.
The pins of JP7 are arranged in the following pattern:
Pin 9
Pin 7
Pin 5
Pin 3
Pin 1
Pin 10
Pin 8
Pin 6
Pin 4
Pin 2
Note:
Pin 1 can be identified by a square solder pad. Pins 2 – 10 have round solder pads.
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