The 4I23 is a low cost, four channel serial port card on a stackable PC/104 bus card. The 4I23 is available in three versions: quad RS-232, quad RS-422, and a model with two RS-232 and two RS-422 channels. The 4I23 uses 16C550 type FIFO'ed UART's. These UART's have built-in 16 byte receive and transmit FIFO's. The 16 character FIFO's reduce interrupt overhead and allow higher data rates without losing characters. The receive FIFO's also increase the allowable interrupt latency. This is especially important when using programs like WINDOWS that disable interrupts for comparatively long periods of time. Unlike many serial cards, the 4I23 is implemented with the 16 bit bus connector so that each of the four serial ports on the 4I23 can use any of the 11 available AT bus interrupts. The 4I23 also has an shared interrupt capability. The four serial port interrupts can be logically or'ed to a common interrupt. The or'ed interrupts are individually maskable. The interrupt status of all four channels is readable at a single port location to allow quick response to the shared interrupt. All additional I/O necessary to implement the shared interrupt logic uses aliased addresses so that no extra I/O port locations are required. The RS-422 ports have one handshake-in and one handshake-out line. The RS-422 drivers can be software enabled and disabled for bus (RS-485) type applications. Jumper selectable RS-422 termination is provided on card. Serial port connectors are 10 pin headers that match 9 pin AT type serial port pinout when terminated with an IDC type 9 pin subminiature D connector. Serial port addresses are set with a PAL device. Eight different sets of port locations can be selected by option jumpers. The 4I23 requires only +5V for operation, as all RS-232 power is generated on card. All CMOS technology keeps power dissipation to a minimum.

The 4I32 is a high performance, four channel asynchronous serial port on a stackable PC/104 bus card. The 4I32 is available in three versions: quad RS-232, quad RS-422/485, and a model with two RS-232 and two RS-422/485 channels. The 4I32 is similar to the 4I23 but uses enhanced 16C550 compatible FIFO'ed UART's with many added features. The 4I32s UARTs have 128 byte receive and transmit FIFOs for lower interrupt overhead or to support higher baud rates. Baud rates up to 921.6K baud are supported with RS-422 or RS-485, and up to 230.4K baud with RS-232. The new UARTS also support automatic hardware or software flow control. Automatic direction control is provided for half duplex RS-485 type applications. Each of the four serial ports on the 4I32 can use any of the 11 available AT bus interrupts. The 4I32 also has an shared interrupt capability. The four serial port interrupts can be logically or'ed to a common interrupt. The or'ed interrupts are individually maskable. Jumper selectable RS-422 termination is provided on card. The 4I32 can be operated in full duplex or half duplex RS-485 mode. Both RS-232 and RS-422/485 interface chips have 15KV ESD protection to prevent static damage. Serial port connections are terminated in a 40 pin latching header. The pinout is designed so that a flat cable from the 4I32 can easily be terminated with four IDC DB9 type connectors giving the standard AT serial port pinout. Serial port addresses are set with a PAL device and can be customized if needed. Eight different sets of port locations can be selected by option jumpers. The 4I32 requires only +5V for operation, as all RS-232 power is generated on card.

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The 4I61 is a low cost, high performance full duplex 10/100 BaseT Ethernet card in PC/104-plus format. The 4I61 uses the National Semiconductor DP83815 Ethernet chip with integrated PHY for minimum component count and reliability. The 4I61 is a universal card and can work in 5V and 3.3V systems. A ROM socket is provided for network boot uses. The ROM socket supports writing to flash EEPROMs.  The 4I61 is a PC/104-PLUS card, meaning that in addition to the stackthrough PCI connector, the standard PC/104 stackthrough connector is available. Like all Mesa cards , the 4I61has a 2 year warranty and is available in industrial temperature range

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The 4I63 is a high performance, four channel asynchronous serial port on a stackable PC/104-PLUS PCI bus card. Since it is a PCI based serial card, it has lower transfer overhead than ISA PC/104 based cards and can support more channels at higher baud rates. The 4I63 is available in three versions: quad RS-232, quad RS-422/485, and a model with two RS-232 and two RS-422/485 channels. The 4I63 is similar to the 4I32 but is PCI based.  The 4I63s UARTs have 128 byte receive and transmit FIFOs for lower interrupt overhead or to support higher baud rates. Baud rates up to 9216K baud are supported with RS-422 or RS-485, and up to 230.4K baud with RS-232. The new UARTS also support automatic hardware or software flow control. Automatic direction control is provided for half duplex RS-485 type applications.  The 4I63 is provided with W9X/NT/W2000 drivers and is supported by Linux,FreeBSD and NetBSD.
The 4I63 can be operated in full duplex or half duplex RS-485 mode. Both RS-232 and RS-422/485 interface chips have 15KV ESD protection to prevent static damage. Serial port connections are terminated in a 40 pin latching header. The pinout is designed so that a flat cable from the 4I63 can easily be terminated with four IDC DB9 type connectors giving the standard AT serial port pinout.  The 4I63 also provides a standard printer port and 11 uncommited I/O bits. The 4I63 requires only +5V for operation, as all RS-232 power is generated on card.

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The 4I66 is a stackable PC/104-plus card that combines a 100BaseT Ethernet MAC with a 4 port switch. The 4I66 makes it easy to connect multiple embedded system cards without the awkward power or mechanical problems with consumer type Ethernet switches. The 4 Ethernet ports support autonegotiation allowing connections with half and full duplex, 10 and 100 BaseT devices plus auto MDX, eliminating the need for crossover cables. The Ethernet MAC is a National Semiconductor DP83816 which has drivers available for most operating systems. The switch has sufficient bandwidth to support full duplex wire speed connections on all ports.

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The 4I71 is a stackable PC/104-plus card that combines a 100BaseT Ethernet MAC with a 8 port switch. The 4I71 makes it easy to connect multiple embedded system cards without the awkward power or mechanical problems with consumer type Ethernet switches. The 8 Ethernet ports support autonegotiation allowing connections with half and full duplex, 10 and 100 BaseT devices plus auto MDX, eliminating the need for crossover cables. The Ethernet MAC is a Micrel 8842 which has drivers available for most operating systems. The switch has sufficient bandwidth to support full duplex wire speed connections on all ports. A switch only version of the 4I71, the 4I71S is available if an additional MAC is not needed.

The 4I29 is a 16 bit Ethernet interface implemented on a stackable PC/104 bus card. The 4I29 supports 10BaseT (Twisted pair) and 10Base2 (Thin-BNC) Ethernet, plus has an AUI connector for connection to external transceivers. The 4I29 can also be supplied with an external panel mount BNC tranceiver for applications where access to the 4I29 card is restricted (the 4I29-E). The 4I29 can be compatible with the NE2000 or WD8013EBT depending on EEPROM set-up options. Most 4I29 options are settable via a provided setup utility, there are only two option jumpers (8/16 bit bus select and 10Base2 termination). Setup options are stored in an on card EEPROM, so that the setup utility need only be run when changing hardware settings. Programmable options include emulation mode (NE2000 or WD8013EBT), I/O address, boot PROM enable, boot PROM location, boot PROM size, interrupt select, and 10BaseT / 10Base2 / AUI selection. Selectable interrupts are IRQ2, IRQ3, IRQ4, IRQ5, IRQ10, IRQ11, and IRQ12. The 10Base2 DC-DC converter can be turned off to minimize power when idle, and is automatically disabled when the 4I29 is setup for twisted pair use. The all CMOS design of the 4I29 plus efficient DC-DC converter keeps operating power below 2 watts. Standard packet buffer is 16K bytes but a 64K byte buffer version is available if desired. A 32 pin dip socket allows installation of 28 or 32 pin boot PROMs from network vendors. The 4I29 is capable of writing to the boot PROM, allowing use of a 5V flash boot PROM if desired.

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This is the MAU - The external panel mount BNC option included with the 4I29-E

This is the TAU - The external panel mount RJ45 option. Includes three status LEDs.
 

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. The 4I33 is mechanically and software compatible with the 4I29. 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.  Like all Mesa cards , the 4I33 has a 2 year warranty and is available in industrial temperature range (-40C >> +85C)

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This is the MAU - The external panel mount BNC option included with the 4I33-E

This is the TAU - The external panel mount RJ45 option. Includes three status LEDs.  

The 4I60 is a high performance PCI 100BaseT Ethernet card in a PC/104-PLUS form factor. PC/104-PLUS is a new embedded system card format that adds a stackable PCI connector to the PC/104 standard. The 4I60 is a bus mastering PCI Ethernet card using the Digital Semiconductor 21143 Ethernet chip. The bus mastering architecture of the 21143 minimizes CPU involvement in packet transmission and reception. The large receive and transmit FIFOs permit efficient operation even with high system latencies. The 21143 chip was chosen for its high performance, advanced feature set, and wide range of available drivers. The 4I60 supports full autonegotiation for automatic selection of all twisted media types. Full duplex operation is supported on 100BaseT and 10BaseT modes.The 4I60 is a universal type PC/104-PLUS card an! 3.3V and 5V bus systems. Only 5V power is required by the 4I60 (+12V is used only for the AUI connector) Unused circuitry is powered down when not needed, including the on card DC-DC converter. The 100BaseT interface of the PHY is powered down when using 10BaseT. All options are software selectable except the PCI slot number. A MII compatible connector is available for use with other media types. A socket for a 32 pin boot ROM of up to 256K bytes is provided. 5V flash ROMs, can be used, simplifying software upgrades. Various 4I60 options are available including a lower cost and lower power 10BaseT only model. A low cost external panel mount transceiver option is available for 10Base2 (BNC) operation.

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This is the MAU - The external panel mount BNC option for the 4I60

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