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Table of Contents
Related Manuals for Mesa 4I33
Summary of Contents for Mesa 4I33
- Page 1 4I33 MANUAL PRELIMINARY V1.0...
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Page 3: Table Of Contents
SERIAL CONNECTOR ........7 4I33 OPERATION . -
Page 4: General
GENERAL DESCRIPTION The 4I33 is a low cost NE2000 compatible Ethernet card for the PC/104 bus that includes an RS-232/RS-485 serial port and 24 parallel I/O bits. The 4I33 Ethernet is NE2000 compatible and uses the RTL8019AS chipset. It supports both EEPROM configuration and Plug-and-Play modes of operation. -
Page 5: Hardware Configuration
BNC terminator where space is at a premium. It must not be enabled unless the 4I33 card is at one end of the BNC cable run. JumperW3 is set to the UP position to enable termination, and the DOWN position to disable termination. -
Page 6: Parallel Port Location
The disadvantage of having receive always enabled is that all transmitted characters must be dumped from the receive buffer when done transmitting. When W16 is in the DOWN position, receive enable is always on. When W16 is in the UP position, receive enable is off when transmitting. 4I33... -
Page 7: Pnp/Eeprom Setup Select
HARDWARE CONFIGURATION PNP/EEPROM SETUP SELECT The 4I33 can operate in 2 different configuration modes: Plug and Play (PNP) where the system BIOS sets up the I/O location and interrupts, and EEPROM mode, where the on card EEPROM determines the I/O location and interrupts. If the system BIOS does not support Plug and Play, you must use the EEPROM configuration mode. -
Page 8: Connectors
CONNECTORS CONNECTOR LOCATIONS AND DEFAULT JUMPER POSITIONS 4I33... -
Page 9: Parallel Connector
P4 to the DSUB female connector be 12 inches or shorter in length, as the flat cable creates an impedance mis-match. P4 is also used for connecting to MESA’s MAU external BNC adapter. This adapter gets its isolated transceiver power from the 4I33s on card DC-DC converter, and so does not require +12V on the PC/104 bus. -
Page 10: External 10Baset Connector
EXTERNAL 10BASET CONNECTOR P5 Is a connector for an external, panel mount RJ45 connector. P5 is a 10 pin .1" header. MESA can supply the panel mount adapter (The TAU). SERIAL CONNECTOR P7 standard. P7 is a 10 pin .1" header that matches a standard AT type DB9 pin serial ports when terminated to IDC type 9 pin connector. -
Page 11: 4I33 Operation
4I33 OPERATION CONFIGURATION If not used in PNP mode, an on card EEPROM is used to store the 4I33 configuration parameters. A supplied DOS program: RSET8019 is used to change these parameters. CONFIGURATION OPTIONS RSET8019 allows setting of the following options:... -
Page 12: Auto Operation
It only does this at startup, so it will never switch back to 10BaseT even if the link becomes operational some time after power up. DEFAULT CONFIGURATION The default 4I33 configuration as shipped from MESA is as follows: IO ADDRESS MEDIA...
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