Contec PC-686CPCI-LV, User Manual

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CHAPTER 2 –Hardware Installations
PC-686 (CPCI)-LV User’s Manual 25
The CPU board has two USB ports; one USB peripheral can be connected
to each port. For more than two USB devices, an external hub can be connected to
either port. The two USB ports are implemented with stacked back panel
connectors. The CPU board fully supports the universal host controller interface
(UHCI) and uses UHCI-compatible software drivers.
USB features includes:
- Self-identifying peripherals that can be plugged in while the computer is running
(USB Ver1.1)
- Automatic mapping of function to driver and configuration
- Support for isochronous and asynchronous transfer types over the same set of
wires
- Support for up to 127 physical devices
- Guaranteed bandwidth and low latencies appropriate for telephony, audio and
other applications
- Error-handling and fault-recovery mechanisms built into the protocol
Note:
Computer systems that have an unshielded cable attached to a USB port may
not meet FCC Class B requirements, even if no device or a low-speed USB device is
attached to the cable. Use shielded cable that meets the requirements for full-speed
devices.
This board has USB I/F 2ch.
It is a USB connector. The pin assignments are as follows:
Pin No.
A2
A3
A4
Si gnal nam e
USB0 Vcc
USB0 -Data
USB0 +Data
USB0 GND
Pin No.
B1
B2
B3
B4
Si gnal nam e
USB1 Vcc
USB1 -Data
USB1 +Data
USB1 GND
CN5
B1 B4
A1 A4