Quatech Asynchronous Communications Adapter for PCI bus DSCLP/SSCLP-100, User Manual

Page 1: ... Low Profile RS 232 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 1 DSCLP SSCLP 100 User s Manual ...

Page 2: ...edures outlined in this document during the warranty period Any damage that results from improper installation operation or general misuse voids all warranty rights Please complete the following information and retain for your records Have this information available when requesting warranty service DATE OF PURCHASE MODEL NUMBER DSCLP 100 or SSCLP 100 PRODUCT DESCRIPTION Two or One Channel Low Prof...

Page 3: ... ensure its accuracy and completeness In no event will Quatech Inc be liable for damages of any kind incidental or consequential in regard to or arising out of the performance or form of the materials presented in this document or any software programs that might accompany this document Quatech Inc encourages feedback about this document Please send any written comments to the Technical Support de...

Page 4: ...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 Equipment Information Technology Equipment Equipment Class Commercial Residential Light Industrial Product Name PCI Two Port or One Port Serial Communications Card Model Number DSCLP 100 SSCLP 100 4 DSCLP SSCLP 100 User s Manual ...

Page 5: ...5 19 5 3 Windows 98 18 5 2 Windows 2000 17 5 1 Windows Millennium 17 5 Windows Configurations 16 4 4 2 Clock Rate Multiplier 15 4 4 1 Enhanced Serial Adapter Identification 15 4 4 Options Register 14 4 3 Interrupt Status Register 14 4 2 Enabling the Special Registers 13 4 1 Base Address and Interrupt Level IRQ 13 4 Address Map and Special Registers 11 3 Hardware Installation 10 2 3 Force High Spee...

Page 6: ...ion The card is automatically configured by the computer s BIOS or operating system The two serial ports share a single interrupt line and are addressed in a contiguous block of 16 bytes A special interrupt status register is provided to help software to manage the shared interrupt The DSCLP 100 s serial ports are implemented using 16550 Universal Asynchronous Receiver Transmitters UARTs These UAR...

Page 7: ...ration Figure 2 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 sections to set optional features SPAD X2 X4 J2 J4 J5 Figure 2 Factory default jumper configuration 2 2 Enable Scratchpad Register SPAD J2 In the default configuration an Interrupt Status Register see section 4 3 and an Op...

Page 8: ...set the clock multiplier by software The effective baud rate will be either two or four times the value for which the UART itself is programmed 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 seria...

Page 9: ... Replace the system cover according to the instructions provided by the computer manufacturer 6 Attach and secure the cable connectors to the desired equipment 7 Turn on the power of the computer system The output of the DSCLP 100 is a 25 pin D connector A cable is provided to convert the D 25 into two standard male D 9 connectors with all control signals provided to each port RTS DTR CTS DSR DCD ...

Page 10: ... bytes as shown in Figure 6 Base Address 8 to Base Address 15 Serial 2 Base Address 0 to Base Address 7 Serial 1 I O Address Range Port Figure 6 Port Address Map All serial ports share the same IRQ The DSCLP 100 signals a hardware interrupt when any port requires service The interrupt signal is maintained until no port requires service Interrupts are level sensitive on the PCI bus The base address...

Page 11: ...r removed 1 Interrupt Status Register removed 0 Register selected for address 7 accesses SPAD Jumper DLAB Bit Figure 7 DLAB bit selects between special registers 4 3 Interrupt Status Register The read only Interrupt Status Register can be used to quickly identify which serial ports require servicing after an interrupt Reading the Interrupt Status Register will return the interrupt status of the en...

Page 12: ...ion The ID bits are used to identify the DSCLP 100 as a Quatech Enhanced Serial Adapter Logic operations are performed such that the values read back from these bits will not necessarily be the values that were written to them Bit ID1 will return the logical AND of the values written to ID 1 0 while bit ID0 will return their exclusive OR Software can thus identify a Quatech Enhanced Serial Adapter...

Page 13: ...ster will always return the clock rate multiplier at which the board is operating 921 6 kbaud 14 7456 MHz X8 1 1 460 8 kbaud 7 3728 MHz X4 0 1 230 4 kbaud 3 6864 MHz X2 1 0 115 2 kbaud 1 8432 MHz X1 default 0 0 Maximum Data Rate UART Clock Frequency Clock Rate Multiplier RR0 RR1 Figure 11 Rate Register bit definition x8 mode is only accessable via sotware control At powerup and reset the Options R...

Page 14: ...n Select Search for the best driver for your device Check the Removable media and Specify location box Click the Next button 2 Window will locate the proper INF file and copy the file from the CD Click the Next button 3 The final dialog screen will verify the file copy from theCD Click the Finish button 14 DSCLP SSCLP 100 User s Manual ...

Page 15: ...x will be displayed Insert the Quatech COM CD shipped with the device Click the OK button 3 The following dialog box will display the appropriate INF file on the CD in the drive Click the OK button 4 Window will copy the INF file from the CD and display a final dialog indication that the process is complete Click the Finish button 15 DSCLP SSCLP 100 User s Manual ...

Page 16: ... appear at start up Click the Next button 2 Select Search for the best driver for your device Click the Next button 3 On the next dialog select the CD ROM DRIVE check box Insert the Quatech COM CD shipped with the device into the CD ROM drive Click the Next button 16 DSCLP SSCLP 100 User s Manual ...

Page 17: ...dows 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 registry An INF configuration file is included with the DSCLP 100 to allow easy configur...

Page 18: ...ations for Multi function Adapters If no INF files are found click the Browse button and search the Win95 sub directory on the installation disk You are not required to select the file name After finding the directory containing the INF files Windows 95 will choose the correct file 4 The New Hardware Found dialog box will appear again this time for an Unknown Device 5 Again select the radio button...

Page 19: ...y A dialog box appears with an option to Skip the files Click the Skip button and the files will not be installed This is all right if the latest version of these drivers are currently in the WINDOWS SYSTEM directory 9 The New Hardware Found dialog will repeat for each of the serial ports on the DSCLP 100 as each port is registered with Windows 95 10 Installation is complete 19 DSCLP SSCLP 100 Use...

Page 20: ...devices registered inside the Windows registry Additional information is available on any of these devices by click on the device name and then selecting the Properties button 3 Double click the device group Multi function Adapters The DSCLP 100 model name should appear in the list of Multi function adapters 4 Double click the DSCLP 100 model name and a properties box should open for the hardware ...

Page 21: ...the Properties button This action opens a properties dialog for the specific COM port on the DSCLP 100 8 Click the Port Settings tab and then click the Advanced button The DSCLP 100 driver will display a custom Advanced Port Settings control which allows the ports UART compatibility mode and FIFO threshold levels to be configured The threshold values of full scale for the transmit buffer and 3 4 s...

Page 22: ...mes to access the serial ports on your DSCLP 100 through your software applications Note The Logical COM Port name is assigned to your ports by Windows This name is required by a Windows application when accessing a particular port 22 DSCLP SSCLP 100 User s Manual ...

Page 23: ...nager 2 Double click on the hardware class Multi Port Serial Adapters to list hardware devices in the class 3 The DSCLP 100 parent device belongs to this hardware class The full device name for the DSCLP 100 is Quatech DSCLP 100 Dual Port RS 232 Serial Adapter 23 DSCLP SSCLP 100 User s Manual ...

Page 24: ...quest resource allocations Do not change these settings without specific instructions from a Quatech Technical Support Specialist To exit without saving changes click the cancel button 5 Open the Properties dialog for the DSCLP 100 device then click the Advanced tab to view the clock rate settings 24 DSCLP SSCLP 100 User s Manual ...

Page 25: ...cs a standard COM port The hardware drivers lock the clock to the standard rate The port will run at the baud rate requested by the application 115 200 X1 Auto clock mode enables applications to request any baud rate up to 921 600 The hardware drivers will select the correct clock multiplier based on the baud rate requested 921 600 Auto Description Max bps Clock Mode Data Rate Multiplier 25 DSCLP ...

Page 26: ...he baud rate the port runs at will always be four times the rate requested by the application This mode is useful for legacy applications which cannot request baud rates over 115 200 460 800 X4 for legacy applicattions which cannot request baud rates over 115 200 6 Double click the hardware class Ports Com and LPT Each Quatech PCI Serial Port listed in this class is a child device of the DSCLP 100...

Page 27: ...l which allows the ports UART compatibility mode and FIFO threshold levels to be configured The threshold values of full scale for the transmit buffer and scale for the receive buffer are optimal for most applications Note that the FIFO option for each of the DSCLP 100 s ports is configured independently 27 DSCLP SSCLP 100 User s Manual ...

Page 28: ...28 DSCLP SSCLP 100 User s Manual ...

Page 29: ... at values such as 3F8 hex IRQ 4 COM1 or 2F8 hex IRQ 3 COM2 etc Rather the system BIOS assigns the address and the IRQ in a plug and play fashion at boot time Software which is to use the DSCLP 100 must be able to accommodate any valid assignments of these resources For Windows 95 98 2000 ME Windows NT and OS 2 the Quatech device drivers determine what the resource assignments are and proceed acco...

Page 30: ...y has been pressed In this example the DSCLP 100 uses I O base address FF80 hex and IRQ 11 The hardware revision of the DSCLP 100 is also displayed Pressing the N key will show similar information for all non Quatech PCI devices in the system including those devices integrated on the motherboard The QTPCI program is capable only of displaying the PCI configuration It cannot be used to make changes...

Page 31: ...egions etc Pressing the N key will show similar information for all non Quatech PCI devices in the system including those devices integrated on the motherboard In this example the Base addr 0 resource is reserved For users interested in even more details PCI BIOS information can be displayed by pressing the B key Pressing the I key displays thePCI interrupt routing table Figure 15 QTPCI EXE Expert...

Page 32: ... be connected directly using a one to one cable as shown in Figure 16 In many applications DCEs are unnecessary and in these cases a cable called a null modem cable or modem eliminator cable is used to directly connect two DTE type devices A typical null modem cable is also shown in Figure 17 RxD TxD RTS CTS DTR DSR DCD GND 3 2 4 5 20 6 8 22 7 RI TxD RxD CTS RTS DSR DTR DCD GND 3 2 4 5 20 6 8 22 7...

Page 33: ...er cable two male D 9 connectors The standard serial port connections are listed in Figure 18 5 1 5 7 GND 9 23 9 22 RI 1 25 1 8 DCD 6 13 6 6 DSR 4 19 4 20 DTR 8 12 8 5 CTS 7 11 7 4 RTS 2 10 2 3 RxD 3 9 3 2 TxD D 9 D 25 D 9 D 25 Port 2 Port 1 RS 232 Signal Figure 18 DSCLP 100 connector pinouts 33 DSCLP SSCLP 100 User s Manual ...

Page 34: ... in hex PCI Vendor ID 0x135C Quatech Inc PCI Device ID 0x0180 DSCLP 100 PCI Device ID 0x0190 SSCLP 100 PCI Class Code Base class 0x07 Simple communications controller Subclass 0x02 Multiport serial controller Interface 0x00 IRQ sourced by INTA Base address 0 0x80 bytes Mem Reserved region Base address 1 0x80 bytes I O Reserved region Base address 2 0x10 bytes I O Serial ports DSCLP 100 Port 1 at o...

Page 35: ...ith 16 byte FIFOs Interface DSCLP One male D 25 connector Two male D 9 connectors using adapter cable SSCLP one male D 9 connector Transceivers ICL3245CA High level output 5V min Low level output 5V max Switching speed Power requirements 5 0 volts approx 250 mA Temperature operating 0 to 70 storage 50 to 80 Humidity 10 to 90 35 DSCLP SSCLP 100 User s Manual ...

Page 36: ... signal transitioning from 3V to 3V The EIA TIA 232 E standard defines a maximum signal transition time ratio of 4 most RS 232 receivers will recognize signal transitions with much larger ratios With a 4 signal transition time ratio EIA TIA 232 E is limited to a theoretical data rate of 200 kbaud If maximum signal transition time ratio is extended to 10 15 20 or even 25 the maximum data rate achie...

Page 37: ...nt IRQ for the DSCLP 100 An address conflict is unlikely because most PCI based computers will assign I O addresses in such a way that they cannot conflict with ISA bus devices 3 The DSCLP 100 may be defective Contact technical support for instructions Cannot communicate with other equipment 1 Are the cable connections correct Are the cables securely attached 2 Is the software configured with the ...

Page 38: ...DSCLP SSCLP 100 User s Manual Revision 1 05 November 2006 P N 940 0179 105 1 DSCLP SSCLP 100 User s Manual ...