Avila Network Computer Operating Manual
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Optional Dual USB Host Connector (J18)
The GW2348-4 includes an optional dual Type A connector to support the USB
host configuration.
Pin Signal
1
USB1 Switched 5V
2
USB1 Data-
3 USB1
Data+
4 Ground
5
USB2 Switched 5V
6 USB2
Data-
7 USB2
Data+
8 Ground
USB Host Connector
2.6. Input
Voltage
Selection
The GW2348-4 is capable of operating over a wide input voltage range of 9VDC
to 48VDC. The amount of power available for the mini-PCI sockets is limited at
lower input voltages as shown in the table below. For example, operating at an
input voltage of 12V limits the total power available to the Mini-PCI sockets to
9.4W or 2.35W per socket in a four-socket system. Full Mini-PCI socket power of
18W is available at input voltages above 20V.
Input Voltage (V)
Mini-PCI Power (W)
9 5.8
10 7.0
11 8.2
12 9.4
13 10.6
14 11.8
15 13.0
16 14.2
17 15.4
18 16.6
19 17.8
20-48 18.0
Input Voltage versus Mini-PCI Power
2.7. JTAG
Programming
The GW2348-4 Flash memory is programmed through the JTAG port. Gateworks
offers a low cost GW16012 JTAG programmer that enables the developer to
program or recover the Flash image through a standard PC parallel port.
Gateworks also offers a GW16013 JTAG gang programmer for simultaneously
programming up to 16 GW2348-4 processors in a production environment.
The following are the steps required to use the GW16012 JTAG programmer.
