Documentation Number 3PCISD4x-3903 Manual Chapter 1 1
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
Chapter 1: GENERAL INFORMATION Introduction The B&B Electronics 3PCISD4x serial interface card is designed
for IBM compatibles with a PCI Bus. The PCI design is Plug and
Play compatible which allows the driver and Operating System to
select the IRQ and hardware addresses used by the card.
The 3PCISD4x card offers exceptional setup flexibility with a mix
of selectable operating modes. If you are writing your own
applications, be sure the communications routine used supports
Windows communication drivers and a wide range of COM ports.
Description
Each of the four ports can be independently configured for RS-
232, RS-422, or RS-485 data protocols. The 485-mode Send Data
Control feature transparently handles the enable and disable
functions of the RS-485 transceiver. Buffered, high speed UARTs
(16550A or 16850) make it ideal for high speed (modem) and
multitasking applications.
Features • IBM compatible, PCI Version 2.1 bus
• Supports baud rates to 460.4 Kbaud with 4X clock option
enabled
• High speed 16 byte FIFO 16550A UARTs (Model 3PCISD4A),
128 byte FIFO 16850 UARTs (Model 3PCISD4B)
• RS-232/422/485 Mode Independently Configurable For Each
Port
• RS-485 Automatic Send Data Control or RTS Control
• 2-wire or 4-wire RS-485 Operation (Half or Full Duplex)
• 120ΩTermination Select Jumpers for RS-422/RS-485 Networks
• RS-232 Mode Signal Lines: TD, RD, RTS, CTS, DSR, DTR,
DCD, RI and Signal Ground.
• 2 Channel RS-422 Signal Lines: TD(A), TD(B), RD(A), RD(B)
and Signal Ground
2 Chapter 1 Documentation Number 3PCISD4x-3903 Manual
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
• RS-485 Signal Lines: TD(A), TD(B), RD(A), RD(B) and Signal
Ground. (Data A & Data B lines when wired for 2-wire
operation.)
Specifications Bus: PCI bus version 2.1
Slot: Requires 1 PCI slot
Dimensions: 11.2 x 4.2 in (28.4 x 10.7 cm)
I/O connection: One DB-37 female (DB-37F)
Cable: One DB-37 male to four DB-9 male (included)
Replacement cable available, order model 37M9M
OS Supported: Windows 95, 98, 2000 and NT 4.0
Baud rates: 460,800 Baud Max - RS-232/422/485
UARTs: 16550A 16 byte TX and RX buffers (A model), or
16850 128 byte TX and RX buffers (B model)
Character length: 5, 6, 7, or 8 bits
Parity: Even, odd or none
Stop bits: 1, 1.5, or 2
RS-232 Control Lines Drivers/Receivers:
Device: 75185 Transceiver
High level output voltage: 6.0 V minimum
Low level output voltage: −6.0 V minimum
Output current limited to: ±10 mA
Input high threshold voltage: 1.5V
Input low threshold voltage: 0.75V
Device will withstand: ±30V
RS-232 Data Lines Drivers/Receivers:
Device: SP211H Transceiver
High level output voltage: 5.0 V minimum
Low level output voltage: −5.0 V minimum
Output current limited to: ±25 mA
Input high threshold voltage: 1.7V
Input low threshold voltage: 0.8V
Device will withstand: ±15V