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© Sealevel Systems, Inc.

4021 Manual | SL9154 11/2021

ACB 56

User Manual | 4021

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Содержание 4021

Страница 1: ...1 Sealevel Systems Inc 4021 Manual SL9154 11 2021 ACB 56 User Manual 4021 ...

Страница 2: ...AL DESCRIPTION 13 PROGRAMMING THE ACB 56 14 SPECIFICATIONS 17 APPENDIX A TROUBLESHOOTING 18 APPENDIX B HOW TO GET ASSISTANCE 19 APPENDIX C ELECTRICAL INTERFACE 20 APPENDIX E ASYNCHRONOUS AND SYNCHRONOUS COMMUNICATIONS 22 APPENDIX F ACB DEVELOPER TOOLKIT AND ACB RESOURCE KIT 24 APPENDIX G SILK SCREEN 25 APPENDIX H COMPLIANCE NOTICES 26 WARRANTY 27 ...

Страница 3: ...ealevel Systems ACB 56 provides the PC with one high speed RS 232 V 24 or V 35 sync async port and one RS 232 port suitable for use as a CSU command port The ACB 56 can be used in a variety of sophisticated communications applications such as SDLC HDLC X 25 and high speed async ...

Страница 4: ... highest level of importance used to stress a condition where damage could result to the product or the user could suffer serious injury Important The middle level of importance used to highlight information that might not seem obvious or a situation that could cause the product to fail Note The lowest level of importance used to provide background information additional tips or other non critical...

Страница 5: ... factory default settings are as follows Base Address DMA Channels IRQ Electrical Specification 238 TX 1 RX 3 5 V 35 To install the ACB IV using factory default settings refer to the section on Installation For your reference record installed ACB III settings below Base Address DMA Channel IRQ Electrical Specification ...

Страница 6: ...n Off Off Off 280 287 1010000XXX Off On Off On On On On 2A0 2A7 1010100XXX Off On Off On Off On On 2E8 2EF 1011101XXX Off On Off Off Off On Off 300 307 1100000XXX Off Off On On On On On 328 32F 1100101XXX Off Off On On Off On Off 3E8 3EF 1111101XXX Off Off Off Off Off On Off Figure 1 Address Selection Table The following illustration shows the correlation between the DIP switch setting and the add...

Страница 7: ...rior to use if an interrupt is required by your application software Consult the user manual for the application software being used to determine the proper setting E6 selects the interrupt request line IRQ for the ACB 56 The diagram below shows IRQ 5 selected in a non shared configuration If no interrupt is desired remove both jumpers 2 9 Selects IRQ2 9 3 Selects IRQ3 4 Selects IRQ4 5 Selects IRQ...

Страница 8: ... half duplex or full duplex DMA mode Full duplex DMA can transmit and receive data simultaneously Half duplex DMA can transmit or receive data but not in both directions simultaneously If DMA is not used remove all of the jumpers on E1 and E7 Refer to Page 6 for the most common DMA settings Header E1 1 DACK 1 Or 3 Acknowledge For Two Channel Mode 2 Two Channel A B Mode A3B1 3 Two Channel A B Mode ...

Страница 9: ... Default Positions 7 and 8 of Header E7 enable or disable DMA operation A jumper ON position 7 permanently enables the DMA tri state drivers A jumper ON position 8 places DMA under software control via the DMA enable control port bit located at Base 4 Removing the jumper disables the drivers and no DMA can be performed The power on reset signal disables the DMA enable signal A jumper placed in pos...

Страница 10: ... DMA Ch 3 Receive Data Ch A DMA Ch 1 Transmit Data 1 4 2 3 6 WAIT REQ A DTR REQ A Figure 6 Commonly Used DMA Options Remember that E7 positions 7 and 8 enable or disable DMA operation Header E5 Header E5 controls the clock input modes for the ACB 56 The input clocks for the SCC can be set in either a non inverted mode or in an inverted mode for application compatibility RC Normal non inverted Rece...

Страница 11: ...isconnect the power cord 2 Remove the PC case cover 3 Locate an available slot and remove the blank metal slot cover 4 Gently insert the ACB 56 into the slot Make sure that the adapter is seated properly 5 Replace the cover 6 Connect the power cord Installation is complete Cabling Options The ACB 56 has a number of cabling options available These options include CA 103 This cable provides a high q...

Страница 12: ... then select All Programs You should see the SeaMAC program folder listed You are now ready to proceed with connecting the 4021 to your system Refer to the Hardware Installation section for details Other Operating Systems Refer to the appropriate section of the Serial Utilities Software LINUX INSTALLATION Refer to SeaMAC Linux Linux Archives Sealevel This link contains valuable information on inst...

Страница 13: ...gramming the 85230 ESCC chip Features One channel of Sync Async communications using 85230 DMA supports data rate greater than 1 million bps Bits Per Second SCC channel B asynchronous port for CSU DSU Command Port Selectable port address IRQ level 2 9 3 4 5 10 11 12 15 and DMA Channel 1 or 3 Internal Baud Rate Generator The baud rate of the SCC is programmed under software control The standard osc...

Страница 14: ... Port Bits Input Port Bits 0 DTR A 1 On 0 Off DSR A 1 On 0 Off 1 DTR B 1 On 0 Off DSR B 1 On 0 Off 2 Not Used Not Used 3 Not Used Not Used 4 Not Used Not Used 5 Not Used Not Used 6 Not Used Not Used 7 DMA Enable 1 On 0 Off Not Used Figure 8 Control Status Register Bit Definitions Software Examples Function Program Bits Turn On CH A DTR Write Out Base 4 XXXX XXX1 Turn On CH B DTR Write Out Base 4 X...

Страница 15: ...se assignments meet the EIA TIA ANSI 232E DTE Specification V 35 Signals Signal Name DB 25 V 35 Mode GND Ground 7 B RDB RX Receive Positive 16 T Input RDA RX Receive Negative 3 R Input TXCB TXC Transmit Clock Positive 12 AA Input TXCA TXC Transmit Clock Negative 15 Y Input RXCB RXC Receive Clock Positive 9 X Input RXCA RXC Receive Clock Negative 17 V Input TDB TX Transmit Positive 14 S Output TDA ...

Страница 16: ...ct 1 Input RS 232 RI Ring Indicator 9 Input RS 232 TD Transmit Data 3 Output RS 232 RTS Request To Send 7 Output RS 232 DTR Data Terminal Ready 4 Output RS 232 These Pin Assignments meet the EIA TIA ANSI 574 DTE Specification Please terminate any control signals that are not going to be used The most common way to do this is connect RTS to CTS and RI Also connect DCD to DTR and DSR Terminating the...

Страница 17: ...el Systems Printed Circuit boards are built to UL 94V0 rating and are 100 electrically tested These printed circuit boards are solder mask over bare copper or solder mask over tin nickel Power Consumption Supply line 12 VDC 12 VDC 5 VDC Rating 50 mA 50 mA 410 mA Mean Time Between Failures MTBF Greater than 150 000 hours Calculated Physical Dimensions Board length 6 6 inches 16 76 cm Board Height i...

Страница 18: ... Systems adapter is securely installed in a motherboard slot 5 Use the ACB Developers Toolkit available at Sealevel Systems and the User Manual to verify that the Sealevel Systems adapter is configured correctly The toolkit contains a diagnostic program SSDACB that will verify if an adapter is configured properly This diagnostic program is written with the user in mind and is easy to use Refer to ...

Страница 19: ...ovides an FAQ section on its web site Please refer to this to answer many common questions This section can be found at http www sealevel com faq asp Sealevel Systems maintains a web page on the Internet Our home page address is www sealevel com The latest software updates and newest manuals are available via our web site Technical support is available Monday to Friday from 8 00 a m to 5 00 p m ea...

Страница 20: ...erface meaning that a single electrical signal is compared to a common signal ground to determine binary logic states A voltage of 12 volts usually 3 to 10 volts represents a binary 0 space and 12 volts 3 to 10 volts denotes a binary 1 mark The RS 232 and the EIA TIA 574 specification defines two type of interface circuits Data Terminal Equipment DTE and Data Circuit Terminating Equipment DCE The ...

Страница 21: ... Symphony chip sets During a DMA cycle the DMA controller chip is driving the system bus in place of the Microprocessor providing address and control information When an interface needs to use DMA it activates a DMA request signal DRQ to the DMA controller which in turn sends a DMA hold request to the Microprocessor When the Microprocessor receives the hold request it will respond with an acknowle...

Страница 22: ...ed around an 8250 Universal Asynchronous Receiver Transmitter UART This device allows asynchronous serial data to be transferred through a simple and straightforward programming interface A start bit followed by a pre defined number of data bits 5 6 7 or 8 defines character boundaries for asynchronous communications The end of the character is defined by the transmission of a pre defined number of...

Страница 23: ...Character synchronization with synchronous communications is also very different than the asynchronous method of using start and stop bits to define the beginning and end of a character When using synchronous communications a pre defined character or sequence of characters is used to let the receiving end know when to start character assembly Figure 11 Synchronous Communications Bit Diagram This p...

Страница 24: ...is twofold First to provide the developer with ample information to develop ACB based applications Second to provide a channel for suggestions into the technical support efforts Topics concerning applications and integration are covered to provide a complete overview of the versatile ACB family The ACB Resource Kit provides a brief overview of the ACB product line and is available at your request ...

Страница 25: ...25 Sealevel Systems Inc 8004 Manual SL9022 9 2021 Appendix G Silk Screen ...

Страница 26: ...d to correct the interference at the user s expense EMC Directive Statement Products bearing the CE Label fulfill the requirements of the EMC directive 89 336 EEC and of the low voltage directive 73 23 EEC issued by the European Commission To obey these directives the following European standards must be met EN55022 Class A Limits and methods of measurement of radio interference characteristics of...

Страница 27: ...nty Warranty service may be obtained by delivering the Product to Sealevel and providing proof of purchase Customer agrees to ensure the Product or assume the risk of loss or damage in transit to prepay shipping charges to Sealevel and to use the original shipping container or equivalent Warranty is valid only for original purchaser and is not transferable This warranty applies to Sealevel manufac...

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