Quatech DSCLP-300, SSCLP-300, SSCLP-200, DSCLP-200 user manual

Page 31

Data Rate Multiplier

Clock Mode

Max bps

Description

 

 

Auto clock mode enables applications to

 

 

request any baud rate up to 921,600.

Auto

921,600

The hardware drivers will select the

 

 

correct clock multiplier based on the

 

 

baud rate requested

 

 

The X1 clock mode mimics a standard

 

 

COM port. The hardware drivers lock

X1

115,200

the clock to the standard rate. The port

 

 

will run at the baud rate requested by

 

 

the application.

 

 

The X2 clock mode locks the ports

 

 

hardware clock at double the standard

 

 

rate. The baud rate the port runs at will

X2

230,400

always be double the rate requested by

 

 

the applications. This mode is useful

 

 

for legacy applicattions which cannot

 

 

request baud rates over 115,200

 

 

The X4 clock mode locks the ports

 

 

hardware clock at four times the

 

 

standard rate. The baud rate the port

X4

460,800

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.

 

 

The X8 clock mode locks the ports

 

 

hardware clock at eight times the

 

 

standard rate. The baud rate the port

X8

921,600

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.

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-200/300 “parent device.”

7.Open the Properties dialog for a COM port, then click the RS-422/485tab to view the settings for that port.

DSCLP/SSCLP-200/300 User's Manual

31

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Contents DSCLP/SSCLP-200/300 Warranty Information Iii Standards to which Conformity is Declared Manufacturers NameManufacturers Address Application of Council DirectiveBase Address and Interrupt Level IRQ Hardware ConfigurationHardware Installation Address Map and Special Registers RS-422 or RS-485 Signal Line TerminationHalf-Duplex/Full-Duplex/Auto-Toggle Selection Page General Information Jumpers J6-J9 Full-duplex/Half-duplex Operation Signal ConnectionsRight Card Edge Jumpers Jumpers J10-J23 define the options for this card1 CTS0SEL, CTS1SEL J10 Clock Rate and Optional Registers Enable Scratchpad Register SPAD, J2Force High-Speed Uart Clock X2, X4, or X8 J3, 4 Clock multiplier jumper options Jumper/connector locations Hardware InstallationChannel Address Range Bit Description Enabling the Special RegistersInterrupt Status Register Dlab Bit Spad Jumper Register selected forQuatech Modem Control Register Quatech Modem Control RegisterBit Name Description Options RegisterWrite Read Clock Rate Uart Clock Maximum Data Multiplier Frequency Clock Rate MultiplierWindows Millennium Windows ConfigurationsWindows Windows Page Windows Windows NT Viewing Resources with Device Manager Two-Port RS-422/RS485 Serial Adapter Page DSCLP-200/300 Two-Port RS-422/485 Serial Adapter Page Page Page Page OS/2 Other Operating SystemsDOS and other operating systems QTPCI.EXE QTPCI.EXE Expert Mode display Jumper/Channel correspondence External ConnectionsRclk RTS/CTS HandshakeAUXIN/AUXOUT Loopback TclkHalf-Duplex/Full-Duplex/Auto-Toggle Selection Half/full-duplex and Auto-Toggle selection RS-422/485 Line termination resistance values Termination ResistorsRS-422/485 Peripheral Connection DSCLP-200/300 connector definitionsINTA# PCI Resource MapWith 64-byte FIFOs optional SpecificationsComputer will not boot up TroubleshootingCannot communicate with other equipment DSCLP/SSCLP-200/300