B&B Electronics 3PXCC2a, 3PXCC1A Introduction and General Information, Features, Specifications

Chapter 1: Introduction and General Information

The B&B Electronics’ 3PXCC series serial interface cards are designed for the IBM PC, XT, AT and compatibles. Ports are configured as a standard DTE device, and connections are made on 9-pin D-style connectors.

The 3PXCC cards offer exceptional setup flexibility. The 3PXCC series has the ability to use any I/O address and any hardware interrupt. You can install as many serial ports as will physically fit in a machine. To use one of the “non-standard” addresses or interrupts, the serial software used must also offer that flexibility. If you are writing your own application, be sure the communications routines used support any address and IRQ. B&B Electronics’ SimpCom Communications Drivers support these features.

Features

•Switch selectable addresses, from 0 to hex 3F8, including COM1 – COM4

•Jumper selectable interrupts: 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15

•Enhanced 16 bit Address Decoding

•Baud rates up to 230.4K baud with 2X clock option enabled

•16550A UARTs on all ports

•Supports all standard RS-232 lines: TD, RD, RTS, CTS, DSR, DCD, DTR, and RI

Specifications

Bus: IBM PC ISA Bus

Slot: Requires 1 full length slot for complete IRQ selectability. When installed in a short slot, IRQ’s 10-15 will not be available.

Dimensions: 6.3 x 3.3 in (16.0 X 8.4cm)

I/O connection: 9-pin male, D-sub connectors

Baud rates: 230,400 baud max with 2x clock jumper enabled

Character length: 5, 6, 7, or 8 bits

Parity: Even, odd or none

Stop bits: 1, 1.5, or 2

Interrupt: IRQ 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, or 15

Address: Switch programmable, 0 to hex 3F8

Documentation No.3PXCC1x-2x-3903 1

RS-232 Drivers:

Device: SN75185

Transmitter output voltage: ± 10.0 V minimum

Short circuit current: ±12 mA typical

Input low level threshold voltage: 0.65 V minimum

Input high level threshold voltage: 2.5V maximum Device will withstand ±30 V

RS-422/485 Driver/Receiver: Device: MAX491 or equivalent Differential driver output voltage: 1.5 - 6 V

Differential input high-threshold voltage: 0.2 V maximum

Differential input low-threshold voltage: -0.2 V minimum

Automatic RS-485 Driver Control Timing:

Driver is enabled when data is a logic “0” (start bit). Driver remains enabled for one character transmission time (10 bits

of

data at current baud rate). Each additional logic “0” resets the timeout.

Power Consumption (2-port model): +5V, 180mA, 900mW

+12V, 50mA, 600mW -12V, 65mA, 780mW

Total maximum power draw: 2.28 W

2 Documentation No.3PXCC1x-2x-3903

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104	B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445	B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445