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8-PORT SERIAL HOST ADAPTER PCI
3. Card Setup
3.1 Clock Modes
The Adapter employs a unique clocking option that allows the end user to select
from divide-by-4 and divide-by-1 clocking modes. This mode is selected at J1.
To select the baud rates commonly associated with COM ports (2400, 4800, 9600,
19.2, … 115.2 kbps), place the jumper in the divide-by-4 position (marked DIV4).
Figure 3-1. Clocking Mode “Divide By 4.”
To select the maximum data rate (460.8 kbps), place the jumper in the divide-
by-1 position (marked DIV1).
Figure 3-2. Clocking Mode “Divide By 1.”
DIV1
DIV4
DIV1
DIV4