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Quatech SSCLP-200 manual

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  • Page 1

    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.com[...]

  • Page 2

    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. Any dam[...]

  • Page 3

     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. Quatech, Inc. reserves the righ[...]

  • Page 4

    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 Standards to which Conformity is Declared: * EN50081-1 (EN55022, EN60555-2, EN60555-3) * EN50082-1 (IEC 801-2, IEC 801-3, & IEC 801-4) Type of Equipmen[...]

  • Page 5

    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 ........................................ 23 5.3 Windows 98 ............................[...]

  • Page 6

    47 10 Troubleshooting ................................ 46 9 Specifications ...................................... 45 8 PCI Resource Map ............................... 44 7.7 RS-422/485 Peripheral Connection .................. 43 7.6 Termination Resistors .............................. 41 7.5 Half-Duplex/Full-Duplex/Auto-Toggle Selection ..... 40 7[...]

  • Page 7

    DSCLP/SSCLP-200/300 User's Manual 7[...]

  • Page 8

    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. All information pertains eq[...]

  • Page 9

    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. Jumpers J1-J4, located in a column near the D-type con[...]

  • Page 10

    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. The factory default configuration, as s[...]

  • Page 11

    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_SEL1 RCLK1_SEL TG L1_SEL0 J19 J20 J21 TG L1_SEL1 RXEN1_SEL J22 J23 SPAD J2 Figure 2 - Right Card Edge Jumpers DSCLP/SSCLP-200/300 User's Manual 11[...]

  • Page 12

    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. With Jumpers installed on J12 or J19 and NO jumpers installed on J11 or J18, the mod[...]

  • Page 13

    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 2.4.1 Enable S[...]

  • Page 14

    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. Figure 5 --- Clock multiplier jumper options X8 X4 X2 J3 J4 J5 J2 SPAD factory defa[...]

  • Page 15

    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. Install the DSCLP-200/300 in any empty PCI expansion slot. The board should be sec[...]

  • Page 16

    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. 4.1 Base Address and Interrupt Level (IRQ) The base address and IRQ used by the DSCLP-200/300 are d[...]

  • Page 17

    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. The Interrupt Status Register and Options Register[...]

  • Page 18

    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. The QMCR of the entire DSCLP-200/300 is shown in Figure 9 a. 00 - TXEN “Auto” 01 - TXE[...]

  • Page 19

    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. Clock rate multiplier bit 0 RR0 0 Clock rate[...]

  • Page 20

    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. Software can determine the UART clock fr[...]

  • Page 21

    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. Click the "Next" button. 2. Window will loc[...]

  • Page 22

    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. 3. The following dialog box will display the appropriate INF file from [...]

  • Page 23

    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. 3. On the next dialog, select the " CD-ROM DRIVE " check box. Insert the Qu[...]

  • Page 24

    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. DSCLP/SSCLP-200/300 User's Manual 24[...]

  • Page 25

    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. The "Add New Hardware Wizard" utility in Windows 95 was designed to add new hardware and update this reg[...]

  • Page 26

    8. The installation utility will ask for your Windows 95 installation disks. Serial communication ports require two drivers supplied by Microsoft to function: SERIAL.VXD and SERIALUI.DLL. Insert the disk or CD and click "OK". NOTE : You may be able to skip this step if you are certain that your system has the latest version of these files[...]

  • Page 27

    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. In the case of [...]

  • Page 28

    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. Double click the DSCLP-200/300 name and a properties dialog should open for the hardware adapter[...]

  • Page 29

    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. 8. Click the "Port Settings" tab and then click the "Advanced" [...]

  • Page 30

    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 full device name for the DSCLP-200/300 is Quatech DSCLP-200/300: Two-[...]

  • Page 31

    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 115.200. 921,600 X8 The X4 clock mode locks the ports hardware clock at four times the st[...]

  • Page 32

    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. Used when RTS/CTS handshaking is required. Modem Control RTS routed to CTS, AUXIN r[...]

  • Page 33

    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. Used in two-wire communication Half Duplex using DTR RTS is set to enable the transmi[...]

  • Page 34

    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. DSCLP/SSCLP-200/300 User's Manual 34[...]

  • Page 35

    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. 6.1 OS/2 The OS/2 device driver supports up to[...]

  • Page 36

    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. In this example, the DSC[...]

  • Page 37

    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. Pressing the "N" key will show similar information for all non-[...]

  • Page 38

    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). A ground signal is also provided. The available input signals for AUXIN are Clear To Send (CTS)[...]

  • Page 39

    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. CTS is received on AUXIN by not connecting pins 1 and 2 of the jumper block J10. If RTS/CTS [...]

  • Page 40

    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). This is done by not connecting pins 1 and 2 of the jumper block J13. If desired, TCLK can be transmitted to an external source over the AUXOUT line by connecting pins 1 and 2 of the jumpe[...]

  • Page 41

    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. The transmit drivers can be controlled by either the Data Terminal Ready (DTR) or the R[...]

  • Page 42

    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 L1 J14 J15 RXEN0 _SEL J16 Auto-Toggle Operation TGL0_SE L0 TGL0_SE L1 J14 J15 RXEN0 _SEL J16 Figure 20 --- Half /full-duplex and Auto-Toggle selection[...]

  • Page 43

    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. RS-422 Rt = 100 ohm 1/2W RS-485 Rt = 120 ohm 1/2W + - RS-422/485 Receiver Rt RXD+ AUXIN+ RXD- AUXIN- or RS-485 te[...]

  • Page 44

    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. 3 GND 9 AUXIN- 5 AUXIN+ 6 AUXOUT- 1 AUXOU[...]

  • Page 45

    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. (all numbers in hex) PCI Vendor ID: 0x135C Quatech, Inc. PCI Device ID:[...]

  • Page 46

    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 (16550 with 64-byte FIFOs optional) Interface: DSCLP: one male D-25 connector (Two female D-9 connectors using adapter cable) SSCLP: one female D-9 conne[...]

  • Page 47

    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. Computer will not boot up. 1. Is the DSCLP-200/300 properly inserted? Remove the[...]

  • Page 48

    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[...]