PEX-400111
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Interface Corporation
Chapter 1 Summary
The PEX-400111 is a serial and parallel communications product for PCI Express-based computers. The
serial communications channel of this product is EIA RS-232C (EIA-574) compatible and can be used
as a Windows standard COM port. This product incorporates our original communications controller
which provides one 1024-byte transmit FIFO and one 1024-byte receive FIFO, and helps achieve
reliable transmission without data loss. The transfer rate is software selectable. Seven base clock
frequencies and a bit rate generator allow you to choose freely appropriate transfer rates for your
specific requirements. The parallel communications channel of this product is compatible with IEEE
1284 supporting bi-directional communications and can be used as a Windows standard parallel port.
The feature allows you to use the port as an expansion printer port and input from a peripheral device
such as a printer or image/film scanner.
1.1 Features
[Serial interface]
>>Our original communications controller
The PEX-400111 incorporates our original communications controller. The following functions are
extended.
- Transmit/receive FIFO size
- Maximum transfer rate
- Configurable transfer rate
- Automatic flow control
>>Windows standard COM port
The PEX-400111 includes a Windows standard COM port driver. This product can be used as an
expansion serial port on Windows-based computers.
>>Configurable transfer rate
A transfer rate is software selectable. This feature allows you to select an appropriate transfer rate. The
maximum transfer rate is 1 Mbps. An actual transfer rate depends on your computer, software, and
connection device.
>>1024-byte FIFOs
The communications controller provides one 1024-byte transmit FIFO and one 1024-byte receive FIFO,
and helps achieve reliable transmission without data loss.
