Advantech MIC-3357, Instruction Manual

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8 MIC-3357 User's Manual
Figure 1-2: MIC-3357 Jumper Setting
1.5.2 COM Mode Selection (JP1 ~ 6)
The MIC-3357 offers two serial ports in micro-formats: COM1 and
COM2. These ports accept RS-232, 422 and 485, and can be selected
by using the jumper setting (Please refer to figure 1-2.) For more
information, you may also refer to section 2.2.
1.5.3 PVIO Voltage Setting (JP7)
The jumper JP7 is used to select the PCI bus reference voltage before
the PCI-to-PCI bridge (PVIO). The MIC-3357 allows PVIO to be set to
either 5 V or 3.3 V. The default is configured as 3.3 V. If the different
voltage is needed, please refer to the following table for changing the
PVIO voltage.
Table 1-2: PVIO voltage setting (JP7)
Voltage PVIO
3.3 V (Default)
5 V