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Summary of Contents for SeaLevel ACB II 3061
- Page 1 ™ ACB II USER’S MANUAL Part Number 3061 Sealevel Systems, Inc Phone: (864) 843-4343 P.O. Box 830 Fax: (864) 843-3067 Liberty, SC 29657 USA www.sealevel.com...
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Page 2: Table Of Contents
Contents ....................1 NTRODUCTION ..................1 VERVIEW ’ ................1 NCLUDED ............1 ACTORY EFAULT ETTINGS ....................2 ETUP ..............2 DDRESS ELECTION ..............3 NTERFACE ELECTION RS-232 ..................3 RS-422 ..................3 RS-485 ..................3 IRQ S ................3 ELECTION DMA C E3)........4 HANNEL ELECTION EADER DMA E E7)............4 NABLE EADER I/O P E4) .......5... - Page 3 Figure 5 - Header E4 (Shown in Factory Default)........5 Figure 6 - Asynchronous Communications Bit Diagram ..... 17 Figure 7 - Synchronous Communications Bit Diagram ....... 18 © Sealevel Systems, Inc. SL9081 Revision 7/2006 Sealevel Systems, Incorporated. All rights reserved.
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Page 4: Introduction
Introduction Introduction Overview The Sealevel ACB-II Advanced Communications Board provides the PC with one high speed sync/async port. The ACB-II can be used in a variety of sophisticated communications applications such as SDLC, HDLC, X.25, and High Speed Async. What’s Included The ACB-II is shipped with the following items. -
Page 5: Card Setup
Refer to Appendix A for common address contentions. The relative I/O addresses of the ACB-II are as follows: • Base+0 Channel A Data Port • Base+1 Channel A Control Port • Base+2 Channel B Data Port • Base+3 Channel B Control Port Sealevel Systems ACB-II Page 2... -
Page 6: Interface Selection
IRQ3, IRQ4, IRQ5, or no interrupt (removing all jumpers) can be selected, depending on jumper position. If no interrupt is desired, remove the jumper. Figure 2 - Header E1 & E9, IRQ Selection (Shown in Factory Default) Sealevel Systems ACB-II Page 3... -
Page 7: Dma Channel Selection (Header E3)
Enable. Please refer to the Zilog SCC User’s Manual for aid in programming Write Register 5 for RTSB. Removing the jumper disables the DMA drivers, and no DMA can be performed. Figure 4 - Header E7 DMA Enable (Factory Default) Sealevel Systems ACB-II Page 4... -
Page 8: Miscellaneous I/O Pin Selection (Header E4)
SCC, the ‘B’ channel Received Data (RDB) and Transmit Data (TDB) are brought out to the DB-25 through Header E4; allowing the use of the second port on the SCC in a user definable two port application. Sealevel Systems ACB-II Page 5... -
Page 9: Installation
Locate an available slot and remove the blank metal slot cover. Gently insert the ACB-II into the slot. Make sure the adapter is seated properly. Replace the screw. Replace the cover. Connect the power cord. Installation is complete. Sealevel Systems ACB-II Page 6... -
Page 10: Technical Description
Other values may be substituted to achieve a higher or different baud rate, if required, by replacing the oscillator (U9) with a different part. Refer to the SCC User’s Manual and the ACB Developers Toolkit diskette for baud rate divisors and programming information. Sealevel Systems ACB-II Page 7... -
Page 11: Connector Pin Assignments
** Note: These pins are not normally clock lines. Pins 15 and 17 are the normal RS-232 clock lines. If your equipment utilizes these clock signals, connect the TXC to pin 20, and the RXC to pin 6. Sealevel Systems ACB-II Page 8... -
Page 12: Specifications
IPC 610-A Class-III standards are adhered to with a 0.1 visual A.Q.L. and 100% Functional Testing. • All Sealevel Systems Printed Circuit Boards are built to U.L. 94V0 rating and are 100% electrically tested. Printed Circuit Boards are solder mask over bare copper or solder mask over tin nickel. -
Page 13: Appendixa - Troubleshooting
4. Make sure the Sealevel Systems adapter is securely installed in a motherboard slot. 5. Use the supplied diskette and User Manual to verify that the Sealevel Systems adapter is configured correctly. The supplied diskette contains a diagnostic program ‘SSDACB’ that will verify if an adapter is configured properly. - Page 14 238-23F may conflict with a Bus Mouse Please refer to your included diskette for any post production manual updates and application specific information. 8. Always use the Sealevel Systems diagnostic software when Troubleshooting a problem. This will eliminate the software issue from the equation.
- Page 15 If possible, please have the adapter installed in a computer ready to run diagnostics. Sealevel Systems provides 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.htm...
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Page 16: Appendixc - Electrical Interface
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 Sealevel Systems adapter is a DTE interface. RS-422 The RS-422 specification defines the electrical characteristics of balanced voltage digital interface circuits. - Page 17 (Tx+ to Rx+ and Tx- to Rx-). Four wire mode allows full duplex data transfers. RS-485 does not define a connector pin-out or a set of modem control signals. RS-485 does not define a physical connector. Sealevel Systems ACB-II Page 14...
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Page 18: Appendixd - Direct Memory Access
DMA functions . The ACB Developers Toolkit demonstrates the setup and use of DMA with several source code and high level language demo programs. Please refer to the SCC User’s Manual, the PC Technical Reference and the 8237 DMA controller chip specification for more information. Sealevel Systems ACB-II Page 15... -
Page 19: Appendixe - Asynchronous And Synchronous Communications
(5, 6, 7, or 8). The end of the character is defined by the transmission of a pre-defined number of stop bits (usual 1, 1.5 or 2). An extra bit used for error detection is often appended before the stop bits. Sealevel Systems ACB-II Page 16... -
Page 20: Figure 6 - Asynchronous Communications Bit Diagram
The data rate and communication parameters for asynchronous communications have to be the same at both the transmitting and receiving ends. The communication parameters are baud rate, parity, number of data bits per character, and stop bits (i.e. 9600,N,8,1). Sealevel Systems ACB-II Page 17... -
Page 21: Synchronous Communications
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 7 - Synchronous Communications Bit Diagram Sealevel Systems ACB-II Page 18... - Page 22 (SDLC, BISYNC, etc.). For a detailed explanation of serial communications, please refer to the book Technical Aspects of Data Communications by John E. McNamara, published by Digital Press (DEC) 1982. Sealevel Systems ACB-II Page 19...
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Page 23: Appendixf - Silk -Screen
Appendix F - Silk-Screen Appendix F - Silk-Screen 4.2" 4.9" 3.9" Sealevel Systems ACB-II Page 20... -
Page 24: Appendixg - Compliance Notices
This is a Class A Product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures. Note: Double screen cabling is required to maintain compliance with EMC directives. Sealevel Systems ACB-II Page 21... -
Page 25: Warranty
Sealevel Systems assumes no liability for any damages, lost profits, lost savings or any other incidental or consequential damage resulting from the use, misuse of, or inability to use this product. Sealevel Systems will not be liable for any claim made by any other related party.
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