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9

CHAPTER 3: Card Setup

3.2 Baud Rates and Divisors for the “Div1” Mode

The following table shows some common data rates and the rates you should
choose to match them if using the adapter in the “Div1” mode.

Table 3-1. Baud rates for the “Div1” mode.

For this Data Rate

Choose this Data Rate

1200 bps

300 bps

2400 bps

600 bps

4800 bps

1200 bps

9600 bps

2400 bps

19.2 kbps

4800 bps

57.6 kbps

14.4 kbps

115.2 kbps

28.8 kbps

230.4 kbps

57.6 kbps

460.8 kbps

115.2 kbps

If your communications package allows the use of baud-rate divisors, choose the
appropriate divisor from the following table:

Table 3-2. Baud-rate divisors for the “Div1” mode.

For this Data Rate

Choose this Divisor

1200 bps

384

2400 bps

192

4800 bps

96

9600 bps

48

19.2 kbps

24

38.4 kbps

12

57.6 kbps

8

115.2 kbps

4

230.4 kbps

2

460.8 kbps

1

Содержание IC142C

Страница 1: ...724 746 5500 FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackb...

Страница 2: ...uipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be necessary to correct the interference Changes...

Страница 3: ...nicamente con carritos o pedestales que sean recomendados por el fabricante 7 El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante 8 Servicio El usua...

Страница 4: ...camente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del...

Страница 5: ...International Business Machines Corporation Windows and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the United States and or other countries Any other tradema...

Страница 6: ...s 11 4 1 3 Windows NT 11 4 1 4 DOS 11 4 1 5 Other Operating Systems 11 4 2 Installing the Hardware 12 5 Technical Description 13 5 1 Interrupts 13 5 2 Why Use an ISP 13 6 Connector Pin Assignments 14...

Страница 7: ...0 to 50 C Storage 4 to 158 F 20 to 70 C Humidity Up to 90 noncondensing Connectors IC142C 1 DB78 male on card 1 DB78 female and 8 DB25 male on included octopus cable IC190C R2 1 DB68 female on card 1...

Страница 8: ...nterrupt control and a 16 byte input and output FIFO buffer It s functionally four 16550 UARTs The IC190C R2 has a 16854 UART with a 128 byte FIFO It is functionally four 16850 UARTs 2 2 What s Includ...

Страница 9: ...ing modes This mode is selected at J1 To select the baud rates commonly associated with COM ports 2400 4800 9600 19 2 115 2 kbps place the jumper in the divide by 4 position marked DIV4 Figure 3 1 Clo...

Страница 10: ...ps 2400 bps 600 bps 4800 bps 1200 bps 9600 bps 2400 bps 19 2 kbps 4800 bps 57 6 kbps 14 4 kbps 115 2 kbps 28 8 kbps 230 4 kbps 57 6 kbps 460 8 kbps 115 2 kbps If your communications package allows the...

Страница 11: ...ess and IRQ Selection The adapter is automatically assigned I O addresses and IRQs by your motherboard BIOS Only the I O address may be modified by the user Adding or removing other hardware may chang...

Страница 12: ...rd Power down the computer and install the adapter The resources are automatically configured for the PCI card Refer to the appropriate help file in the Black Box folder located in the Start Programs...

Страница 13: ...and remove the blank metal slot cover 4 Gently insert the adapter into the slot Make sure that it is seated properly 5 Connect the DB78 female connector end of the octopus cable to the DB78 male conne...

Страница 14: ...system in the PC has its own interrupt frequently called an IRQ short for Interrupt ReQuest 5 2 Why Use an ISP The Interrupt Status Port ISP is a read only 8 bit register that sets a corresponding bit...

Страница 15: ...Input CTS Clear to Send 5 Input DSR Data Set Ready 6 Input DCD Data Carrier Detect 8 Input RI Ring Indicator 22 Input 6 2 DB78 Connector Pin Assignments IC142C Port 1 2 3 4 5 6 7 8 TD 36 12 27 3 75 5...

Страница 16: ...s IC190C R2 Port 1 2 3 4 5 6 7 8 TD 1 9 19 27 35 43 53 61 RI 2 10 20 28 36 44 54 62 DCD 3 11 21 29 37 45 55 63 DTR 4 12 22 30 38 46 56 64 RTS 5 13 23 31 39 47 57 65 DSR 6 14 24 32 40 48 58 66 RD 7 15...

Страница 17: ...ny other adapters such as SCSI adapters and on board serial ports do not The IRQ is typically selected via an on board header block Refer to Chapter 3 for help in choosing an I O address and IRQ 4 Mak...

Страница 18: ...any particular application that when used appears to create the problem or make it worse Also have the following information ready when you call 1 Current adapter settings If possible have the adapter...

Страница 19: ...ta Terminal Equipment and Data Circuit Terminating Equipment Employing Serial Binary Data Interchange RS 232 can operate at data rates of up to 20 kbps at distances less than 50 ft 15 2 m The absolute...

Страница 20: ...r Transmitter UART which allows asynchronous serial data to be transferred through a simple and straightforward programming device The serial host adapter IC142C uses a much newer 16554 UART that also...

Страница 21: ...ed E ven Parity or O dd Parity Sometimes parity is not used to detect errors on the data stream this is called N o Parity Because each bit in asynchronous communication is sent consecutively it is wra...

Страница 22: ...1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746 Copyright 2004 Black Box Corporation All rights reserved...

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