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DSCLP/SSCLP-200/300 Two and One Channel RS- 422/485 Low Profile Asynchronous Communications Adapter for PCI bus User's Manual QUATECH, INC. TEL: (330) 655-9000 5675 Hudson Industrial Parkway FAX: (330) 655-9010 Hudson, Ohio 44236 http://www.quatech.
WARRANTY INFORMATION Quatech, Inc. warrants the DSCLP-200/300 or SSCLP-200/300 to be free of defects for five (5) year s from the date of purchase. Quatech, Inc. will repair or replace any board that fails to perform under normal operating conditions and in accordance with the procedures outlined in this document during the warranty period.
2006 Quatech, Inc. NOTICE The information contained in this document cannot be reproduced in any form without the written consent of Quatech, Inc. Likewise, any software programs that might accompany this document can be used only in accordance with any license agreement(s) between the purchaser and Quatech, Inc.
Declaration of Conformity Manufacturer's Name: Quatech Inc. Manufacturer's Address: 5675 Hudson Industrial Parkway Hudson, Ohio 44236 (USA) Application of Council Directive: 89/336/EEC Stand.
Table of Contents 35 6 Other Operating Systems ....................... 30 5.6.1 Changing Resource Settings with Device Manager . 27 5.6 Viewing Resources with Device Manager ............ 26 5.5 Windows NT ....................................... 25 5.4 Windows 95 .
47 10 Troubleshooting ................................ 46 9 Specifications ...................................... 45 8 PCI Resource Map ............................... 44 7.7 RS-422/485 Peripheral Connection .................. 43 7.6 Termination Resistors .
DSCLP/SSCLP-200/300 User's Manual 7.
1 General Information The Quatech, Inc. DSCLP-200/300 (two-port) and SSCLP-200/300 (one-port) provide RS-422 or RS-485 asynchronous serial communication interfaces for IBM-compatible personal computer systems using the PCI expansion bus. For general purposes, this manual usually makes reference only to the DSCLP-200/300.
2 Hardware Configuration The DSCLP-200/300 is automatically configured at boot time by the computer's BIOS or operating system. There are no required switches or jumpers to set for installation. This chapter lists a number of optional jumper settings that control various hardware features.
2.2 Signal Connections The DSCLP-200/300 provides each of two serial ports with four differential signal pairs: TxD, RxD, AUXOUT, and AUXIN. TxD and RxD are always present at the connector. The AUXOUT and AUXIN signals can be used to support RTS/CTS handshaking, external clocking, or external signal loopback.
Jumpers J10-J23 define the options for this card: X8 X4 X2 J3 J4 J5 CTS0_SEL AUX0_SEL0 AUX0_SEL1 J10 J11 J12 RCLK0_SEL TG L0_SEL0 TG L0_SEL1 J13 J14 J15 RXEN0_SEL CTS1_SEL AUX1_SEL0 J16 J17 J18 AUX1_S.
2.3.1 CTS0_SEL, CTS1_SEL (J10, 17) With NO jumpers on J10 or J17 the mode selection is CTS=AUXIN. With Jumpers installed the mode selection is CTS=RTS . 2.3.2 AUX0_SEL1,0, AUX1_SEL1,0 (J12, 11, 19, 18) With NO jumpers on J12 or J19 the mode selection is AUXOUT=RTS.
2.4 Clock Rate and Optional Registers Figure 3 shows the jumper configuration as shipped from the factory, with two spare jumpers applied in neutral positions. Remove one or both and apply as shown in following subsections to set optional features. X8 X4 X2 J3 J4 J5 J2 SPAD Figure 3 --- Factory default clock rate and options settings 2.
The factory default is none of these jumpers applied, which allows for software control of the clock multiplier via the Options Register. The Options Register powerup default is for a standard times-1 clock of 1.8432 MHz for compatibility with standard serial ports.
3 Hardware Installation 1. Turn off the power of the computer system in which the DSCLP-200/300 is to be installed. 2. Remove the system cover according to the instructions provided by the computer manufacturer. 3. Make any desired optional jumper setting changes.
4 Address Map and Special Registers This chapter explains how the two UARTs and special registers are addressed, as well as the layout of those registers. This material will be of interest to programmers writing driver software for the DSCLP-200/300. 4.
4.2 Enabling the Special Registers The DSCLP-200/300 contains two unique registers, an Interrupt Status Register and an Options Register. These registers are enabled when the SPAD jumper (J13) is removed (factory default). They replace the UART Scratchpad Register on accesses to register address 7.
4.4 Quatech Modem Control Register The Quatech Modem Control Register can be used to set up each port. To access the QMCR write a 0xBF to the LCR (base + 3) and a 0x10 to t he Options Register (base+7) . This will allow the user read/write access to the QMCR.
4.5 Options Register The Options Register allows software to identify the DSCLP-200/300 as a Quatech Enhanced Serial Adapter. It also allows software to set the UART clock rate multiplier. Figure 10 shows the structure of the Options Register. The powerup default of the Options Register is all bits zero.
4.5.2 Clock Rate Multiplier A standard serial port operates at a clock speed of 1.8432 MHz. In order to achieve higher data rates, Quatech Enhanced Serial Adapters can operate at two, four, or eight times this standard clock speed. This is controlled by the clock rate multiplier bits in the Options Register.
5 Windows Configurations 5.1 Windows Mille nnium 1. After inserting the DSCLP-200/300 for the first time the "Add New Hardware Wizard" will begin. Select "Search for the best driver for your device.". Check the "Removable media" and "Specify location" box.
5.2 Windows 2000 1. After inserting a DSCLP-200/300 for the first time, the "Add New Hardware Wizard will appear at start up. C lick the "OK" button. 2. The following dialog box insert the Quatech COM CD (shipped with the device). Click the "OK" button.
5.3 Windows 98 1. After inserting a DSCLP-200/300 for the first time, the "Add New Hardware Wizard will appear at start up. C lick the "Next" button. 2. Select "Search for the best driver for you device". Click the "Next" button.
4. The following dialog box will display the appropriate INF file on the diskette in the drive. Click the "Next" button. 5. Window will copy the INF file from the diskette and display a final dialog indication that the process is complete. Click the "Finish" button.
5.4 Windows 95 Windows 95 maintains a registry of all known hardware installed in your computer. Inside this hardware registry Windows 95 keeps track of all of your system resources, such as I/O locations, IRQ levels, and DMA channels.
8. The installation utility will ask for your Windows 95 installation disks. Serial communication ports require two drivers supplied by Microsoft to function: SERIAL.
5.6 Viewing Resources with Device Manager This discussion applies equally to Windows 95/98/ME and 2000/XP. Windows maintains a registry of all known hardware installed within the computer. Inside this hardware registry Windows keeps track of all the computer's resources, such as base I/O addresses, IRQ levels, and DMA channels.
3. Double click the device group " Multi-function Adapters". The DSCLP-200/300 “parent device” belongs to this hardware class. The full device name for the DSCLP-200/300 is Quatech DSCLP-200/300 PCI Two-Port RS-422/RS485 Serial Adapter. 4.
dialog for the specific COM port on the DSCLP-200/300. Then click the Resources tab to view the Input/Output Range and Interrupt Request resource allocations. These will match those of the “parent device.” Click "Cancel" to exit without making changes.
5.6.1 Changing Resource Settings with Device Manager 1. Start the Windows 95/98/ME Device Manager . 2. Double click on the hardware class Multi-Port Serial Adapters to list hardware devices in the class. 3. The DSCLP-200/300 “parent device” belongs to this hardware class.
The X8 clock mode locks the ports hardware clock at eight times the standard rate. The baud rate the port runs at will always be eight times the rate requested by the application. This mode is useful for legacy applications which cannot request baud rates over 115.
RTS routed to CTS, AUXIN routed to RCLK, and TCLK routed to AUXOUT. Used to connect ports transmitting at different baud rates. In order to function, all ports must have and use this feature. Clocks RTS routed to AUXOUT, AUXIN routed to CTS, and TCLK routed to RCLK.
Hardware automatically enables the transmitters when transmitting. Transmitters will turn off three bit-times after the last stop bit of the last character, regardless of baud rate. Used in two-wire communication. Auto Toggle DTR is set to enable the transmitters.
full-scale for the transmit buffer and ¾-scale for the receive buffer are optimal for most applications. Note that the FIFO option for each of the DSCLP-200/300's two ports is configured independently.
6 Other Operating Systems Device drivers for Windows NT and OS/2 are also available for the DSCLP-200/300. The board can be used under DOS and other operating systems as well in many circumstances. The software described below can be obtained from the Quatech web site if it did not come with the board.
6.2.1 QTPCI.EXE Quatech's "QTPCI" utility supplies the information required when modifying the serial port settings of the application. This program should be run from real DOS, not in a Windows DOS box. Figure 13 shows the Basic Mode display for the DSCLP-200/300 after the "Q" key has been pressed.
Figure 14 shows the Expert Mode display for the DSCLP-200/300 after the "Q" key has been pressed. The information from the Basic Mode display is presented along with more details such as the Vendor and Device IDs, PCI Class Code, size of memory and I/O regions, etc.
7 External Connections The DSCLP-200/300 provides four differential communication signals per channel. The two output signals are Transmit Data (TxD) and Auxiliary Output (AUXOUT). The two input signals are Receive Data (RxD) and Auxiliary Input (AUXIN).
7.1 RTS/CTS Handshake Transmission of RTS, combined with reception of CTS, allows for hardware handshaking (data flow control) between the UART and the external device. RTS is transmitted on AUXOUT by not connecting pins 1 and 2 of the jumper blocks J11-12.
7.3 TCLK This is the output clock signal used by the transmitter portion of the UART. It is generally connected to the UART's own receive clock input (RCLK).
7.5 Half-Duplex/Full-Duplex /Auto-Toggle Selection Using jumper blocks J14 thru J16, the transmitters and receivers of each channel can be enabled and disabled by modem control signals. This allows operation in both half-duplex, full-duplex or Auto-Toggle modes.
Full-Duplex Operation Half-Duplex(DTR) Operation Half-Duplex(RTS) Operation Jumpers J14-16 TGL0_SE L0 TGL0_SE L1 J14 J15 RXEN0 _SEL J16 TGL0_SE L0 TGL0_SE L1 J14 J15 RXEN0 _SEL J16 TGL0_SE L0 TGL0_SE .
7.6 Termination Resistors Line termination resistors are provided for the input s ignals of each of the DSCLP-200/300's RS-422/485 ports. Termination may be selected or removed for individual signal lines using jumper blocks J6-J9.
7.7 RS-422/485 Peripheral Connection The DSCLP-200/300 connects to peripheral equipment through a 25-pin D-connector. A cable is provided to convert the D-25 into two standard female D-9 connectors. The SSCLP-200-300 has a single D-9 connector. The serial port connector definitions are listed in Figure 2 2.
8 PCI Resource Map Listed below are the PCI resources used by the DSCLP-200/300. Such information may be of use to customers writing their own device drivers or other custom software. A detailed description of the DSCLP-200/300's UARTs is available on the Quatech web site.
9 Specifications Bus interface: PCI, 32-bit bus, Universal Voltage Signaling IBM -compatible computers Dimensions: approx. 4.725" x 2.5" Serial ports Controller: 16550 with 16-byte FIFOs (16.
10 Troubleshooting Listed here are some common problems and frequent causes of those problems. If the information here does not provide a solution, contact Quatech technical support. Any unauthorized repairs or modifications will void the DSCLP-200/300's warranty.
DSCLP/SSCLP-200/300 User's Manual Revision 1.23 November 2006 P/N: 940-0182-123 i DSCLP/SSCLP-200/300 User's Manual.
Een belangrijk punt na aankoop van elk apparaat Quatech SSCLP-300 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
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In een situatie waarin je al een beziter van Quatech SSCLP-300 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Quatech SSCLP-300 kunnen verkorten.
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