Quatech DSC-300 - Manual

2.2 Signal Connections The DSC-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 theconnector. The AUXOUT and AUXIN signals can be used to support RTS/CTShandshaking, external clocking, or external signal loo...

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 shownin following subsections to set optional features. SPAD X2 X4 X8 J10 J11 J12 J13 Figure 3 --- Factory d...

3 Hardware Installation 1. Turn off the power of the computer system in which the DSC-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 DSC-200/300 in any emp...

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 programmerswriting driver software for the DSC-200/300. 4.1 Base Address and Interrupt Level (IRQ) The base ...

4.4 Options Register The Options Register allows software to identify the DSC-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 zer...

5 Windows Configuration 5.1 Windows Millennium 1. After inserting the DSC 200/300 for the first time the "Add New HardwareWizard" will begin. Select "Search for the best driver for your device.". Check the"Removable media" and "Specify location" box. Click the "Ne...

4. Double click the DSC-200/300 model name and a properties box should open for the hardware adapter. 5. Click the "Resources" tab located along the top of the properties box to view the resources Windows 95 has allocated for the DSC-200/300 match the hardwareconfiguration. Because PCI is a ...

5.5 Using the "New Hardware Found" Wizard The following instructions provide step-by-step instructions on installing the DSC-200/300 in Windows using the "New Hardware Found" wizard. 1. After booting the computer with a newly-installed DSC-200/300, the "New Hardware Found" di...

6 DOS and Other Operating Systems The DSC-200/300 is not a direct drop-in replacement for a legacy serial port because its base address and IRQ cannot be fixed at values such as 3F8 hex, IRQ 4(COM1) or 2F8 hex, IRQ 3 (COM2), etc. Rather, the system BIOS assigns the addressand the IRQ in a plug-and-p...

The QTPCI program is capable only of displaying the PCI configuration. It cannot be used to make changes. Q - Quatech PCI adaptersN - Other PCI devicesX - EXIT M - Change to Expert Mode Quatech PCI Configuration Information Display Software Version 1.00 INSTRUCTIONS:------------------------Press key...

8 External Connections The DSC-200/300 provides four differential communication signals per channel. The two output signals are Transmit Data (TxD) and Auxiliary Output (AUXOUT). Thetwo input signals are Receive Data (RxD) and Auxiliary Input (AUXIN). A groundsignal is also provided. The available i...

9 PCI Resource Map Listed below are the PCI resources used by the DSC-200/300. Such information may be of use to customers writing their own device drivers or other custom software. A detailed description of the DSC-200/300's UARTs is available on the Quatech web site. (all numbers in hex) PCI Vendo...

10Specifications Bus interface PCI, 32-bit bus, 5-volt only IBM-compatible computers Dimensions: approx. 5.5" x 3.5" Serial ports Controller: 16750 with 64-byte FIFOs Interface: Two female D-9 connectors Transceivers: SP491 or compatible Differential output: 2V min. with 50-ohm load (RS-422)...

11 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 DSC-200/300's warranty. Computer will not boot up. 1. Is the ...