Mesa 4I33 Manual 

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 HARDWARE CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 LOCAL TRANSCEIVER POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 BNC TERMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SERIAL PORT LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 PARALLEL PORT LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SERIAL INTERRUPT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 RS-485 RE OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 PNP/EEPROM SETUP SELECT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 CONNECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 CONNECTOR LOCATIONS AND DEFAULT JUMPER POSITIONS . . . . . . . 5 PARALLEL CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 AUI CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 EXTERNAL 10BASET CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 SERIAL CONNECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4I33 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 CONFIGURATION OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 AUTO OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 DEFAULT CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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. 10BaseT, 10Base2 (BNC), and AUI interfaces are provided. The 4I33 also supports external panel mount 10BaseT or BNC connectors. The panel mount BNC tranceiver (MAU) connects to the 4I33's AUI connector. The panel mount 10BaseT connector has link and activity LEDS. The serial port is a standard COMX compatible port using a 16550 compatible FIFOed UART. The serial port is available with either RS-232 or RS-485 level shifters. The serial port has 4 selectable I/O locations and can use IRQ 2, 3, 4, 5, 7, 9, 10, 11, 12, or 15. The parallel port uses a 82C55 and provides 24 general purpose I/O bits. All I/O bits are provided with pullup resistors to simplify connection to switches, sensors, etc. The parallel port has 4 selectable I/O port locations.

upright position, that is, with the PC/104 connectors towards the person doing the configuration. LOCAL TRANSCEIVER POWER The on card BNC transceiver power can be enabled or disabled via jumper block W2. BNC Tranceiver power should only be disabled when an external BNC transceiver such as MESAs MAU is used. Make sure that local transceiver power is disabled if a MESA MAU is used. If left enabled when a MAU is used, an overload will occur and power supply damage may result! It is not necessary to disable transceiver power to save current consumption in 10BaseT mode, since the Ethernet chip will automatically disable the DC-DC converter when the 10BaseT interface is used. Moving W2 to the UP position enables local transceiver power, moving W2 to the DOWN position disables local transceiver power. BNC TERMINATION The local BNC port can be terminated on card if desired. This can be useful to avoid the space used by a 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. SERIAL PORT LOCATION The optional on-card serial port can be located at 4 different I/O addresses, COM3, COM4,COM5, or COM6. These locations are determined by a PAL and can be changed if needed.. Jumpers W4 and W5 (labeled SLOC on card) set the serial port locations as follows: W4 W5 LOCATION DOWN DOWN COM3 = 3E8H DOWN UP COM4 = 2E8H UP DOWN COM5 = 100H UP UP COM6 = 108H

The optional on-card parallel port can be located at 4 different I/O addresses, 204H,208H,224H and 228H. These locations are determined by a PAL and can be changed if needed. Jumpers W6 and W7 (labeled PLOC on card) set the parallel port locations as follows: W6 W7 LOCATION DOWN DOWN 204H DOWN UP 208H UP DOWN 224H UP UP 228H SERIAL PORT INTERRUPT The optional serial port can select from 8 interrupts. The interrupt is selected by placing a jumper on one of the jumper locations from W8 through W15. These jumpers are labeled with the IRQ number on the card. Interrupts are selected as follows: W8 W9 W10 W11 IRQ9 IRQ3 IRQ4 IRQ5 W12 W13 W14 W15 IRQ7 IRQ10 IRQ11 IRQ12 RS-485 RE OPTION If the RS-485 option is installed, jumper W16 can be used to select whether the RS485 receiver is enabled when transmitting. This can be useful for ‘collision detection’ schemes. 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.

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. W17 determines the configuration mode. When W17 is in the UP position, PNP mode is selected, When W17 is in the DOWN position, EEPROM setup mode is selected.

the 4I33s 82C55 based 24 bit parallel I/O. The 26 pin connector uses the ISO standard pinout.The parallel connector pinout is as follows: PIN FUNCTION PIN FUNCTION PIN FUNCTION PIN FUNCTION 1 PA0 2 VCC 3 PA1 4 PA2 5 PA3 6 PA4 7 PA5 8 PA6 9 PA7 10 PB0 11 PB1 12 PB2 13 PB3 14 PB4 15 PB5 16 PB6 17 PB7 18 PC0 19 PC1 20 PC2 21 PC3 22 PC4 23 PC5 24 PC6 25 PC7 26 GND AUI CONNECTOR P4 is AUI connector. P4 is a 16 pin connector. When P4 is terminated with a 15 pin female IDC DSUB connector (with cable conductor pin unused), that connector will have the standard Ethernet AUI pinout. P4 gets its +12 volt transceiver power from the PC/104 bus so +12V must be supplied if using and external transceiver. It is suggested that the cable connecting 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.

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. In this case pin 10 is not used. Pin 10 is connected to +5V to support RS232-RS422 adapters etc. P7 pinout is as follows: HEADER PIN DB9 PIN RS-232 FUNCTION RS-485 FUNCTION 1 1 DCD 2 6 DSR 3 2 RXD 4 7 RTS 5 3 TXD 6 8 CTS 485-A 7 4 DTR 8 9 RI 485-B 9 5 GND 10 XX VCC

configuration parameters. A supplied DOS program: RSET8019 is used to change these parameters. CONFIGURATION OPTIONS RSET8019 allows setting of the following options: I/O ADDRESS 200H 220H 240H 260H 280H 2A0H 2C0H 2E0H 300H 320H 340H 360H 380H 3A0H 3C0H 3E0H Note that some of these addresses will be unavailable due to conflicts with existing peripherals. IRQ 2/9 3 4 5 10 11 12 15 MEDIA 10Base2 10Base5 10BaseT Auto If MESAs external panel mount transceiver (MAU) is used, the 10 Base2 mode should be selected. This is because the MAU gets its isolated transceiver power from the 4I33s DC-DC converter and 10Base5 mode will disable on DC-DC converter.

BOOT PROM ADDRESS/SIZE: C000H/64K D000H/64K C000H/32K C800H/32K D000H/32K D800H/32K C000H/16K C400H/16K C800H/16K CC00H/16K D000H/16K D400H/16K D800H/16K DC00H/16K C000H/PAGE C400H/PAGE C800H/PAGE CC00H/PAGE D000H/PAGE D400H/PAGE D800H/PAGE DC00H/PAGE AUTO MEDIA DETECT The configuration program lets you select an ‘auto’ mode for media type. The auto media detect mode operates as follows: At power up, the RTL8019 MAC chip starts up in 10BaseT mode and senses the 10BaseT link status. If the link status is good, it remains in 10BaseT mode, if the link status is bad, it will switch to BNC mode. 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 IRQ MEDIA 300H 5 AUTO The default 4I33T configuration as shipped from MESA is as follows: IO ADDRESS IRQ MEDIA 300H 5 10BASET .