AMD SD186ED User Manual
About the SD186ED Demonstration Board
1.0
The AMD® SD186ED Demonstration Board was designed as an exceptionally
small, low-cost product for demonstration of the AMD Am186
microcontroller. See page ix for a block diagram of the board.
The SD186ED demonstration board is a stand-alone evaluation platform for the
Am186ED microcontroller . The Am186ED microcontroller integrates peripherals
such as twelve 16-bit memory chip-select controllers; serial controllers; 32
programmable I/Os, three timers, an interrupt controller, and a watchdog timer to
increase system functionality while reducing overall cost. The memory controller
supports a glueless connection to SRAM, DRAM, EPROM, Flash memory, and
pseudo-static RAM. The Am186ED microcontroller also features an innovative
bus design that frees the processor to run at nearly twice the speed of standard
80C186 processors while using commodity memory devices.
The SD186ED demonstration bo ard is designed with a 104 -pin Am186 expansion
interface that provides access to the Am186ED microcontroller signals. The
Am186 expansion interface facilitates prototyping with external devices by using
the SD186ED demonstration board as the minimal system core of a design.
The SD186ED demonstration board highlights the Am186ED microcontroller’s
serial ports, glueless interface to DRAM and Flash memory, and the expansion
interface to peripheral attachments. A complete description of the board can be
found in Chapter 2, “SD186ED Demonstration Board Functional Description.”
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SD186ED Demonstration Board User’s Manual
vii
Theory of Operation
The SD186ED demonstrat ion board demonstrates the bas ic processor functionality
and features of the Am186ED microcontroller and the simplicity of its system
design. As a stand-alone platform, the board enables users to test the Am186ED
microcontroller’s performance and functionality. The minimal number of
components on the board exhibits the integration present in the processor, including
interrupt, DMA, memory, and serial control units.
SD186ED Demonstration Board Features
The SD186ED demonstration board provides the following features:
• Am186ED 40-MHz microcontroller
™
•E86
family boot monitor (E86MON™) board-resident utility
Information on invoking and using the E86MON software is provided in the
E86MON
• 4 Mbit DRAM
• 4 Mbit Am29F400-70 Flash memory
• Am186 104-pin expansion interf ace
• Two RS-232 serial ports with DB-9 connectors
• Activity LED indicators for PIO signals
• Power-on LED indicator
• Reset circuitry
™
Software User’s Manual included in your kit.
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SD186ED Demonstration Board User’s Manual
Am186ED
Microcontroller
CPU
Clock &
Reset
Circuitry
Address Bus
A/D Bus
Control
Am29F400-70
Flash Bank
(4 Mbit)
DRAM
(4 Mbit)
Am186
Expansion
Interface
1.0
Power
& Ground
5.5-mm
Barrel
Connector
RS-232 Serial Port
Level Converter
Circuitry
RS-232 Serial Port
Level Converter
Circuitry
DB-9
Connector
DB-9
Connector
Figure 0-1. SD186ED Demonstration Board Block Diagram
SD186ED Demonstration Board User’s Manual
ix
SD186ED Demonstration Board Documentation
The SD186ED Demonstrat ion Board User’s Manual pr ovid es in form atio n on the
design and function of the SD186ED demonstration board. Detailed instructions
for invoking and using the E86MON software are provided in the E86MON
Software User’s Manual included in your kit. The SD186ED demon stration b oard
is shipped with the E86MON software installed in the on-bo a rd Flash memory.
About This Manual
Chapter 1, “Quick Start” provides implementation and installation information for
the demonstration board and instructions for invoking the E86MON software.
Detailed information on using the E86MON software is provided in the E86MON
Software User’s Manual included in your kit.
Chapter 2, “SD186ED Demonstration Board Functional Description” contains
descriptions of the basic sections of the SD186ED demonstration board: layout,
processor, Flash memory, DRAM, serial ports, power and signal LED indicators,
clock and reset logic, expansion interface, and power-supply circuitry.
Chapter 3, “Product Support” provides inf ormation on reaching and using the AMD
Corporate Applications technical support serv ices, pr odu ct in for mation available
through AMD’s World Wide Web and FTP sites, and support tools for the
embedded E86 family.
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1.0
Appendix A, “Layout Diagram, Schematics , and Board Bill of Materials” contains
a board layout drawing along with schematics and a Bill of Materials (BOM) for
the SD186ED demonstration board.
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SD186ED Demonstration Board User’s Manual
1.0
Suggested Reference Material
•Am186™ED Microcontroller Data Sheet
Advanced Micro Devices, order number 21336
™
• Am186
ED Microcontroller User’s Manual
Advanced Micro Devices, order number 21335
• Am186 and Am188 Family Instruction Set Manual
Advanced Micro Devices, order number 21076
• Flash Memory Products Data Book
Advanced Micro Devices, order number 11796
SM
• FusionE86
Catalog
Advanced Micro Devices, order number 19255
For current application notes and technical bulletins, see our W orld W ide W eb page
at http://www.amd.com.
Documentation Conventions
The Advanced Micro Devices SD186ED Demonstration Board User’s Manual
uses the conventions shown in Table 0-1 (unless otherwise noted). These same
conventions are used in all the E86 family support product manuals.
Table 0-1. Notational Conventions
Symbol Usage
Boldface Indicates that characters must be entered
exactly as shown, except that the alphabetic case
is only significant when indicated.
Typewriter face Indicates computer text input or output in an
example or listing.
SD186ED Demonstration Board User’s Manual
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SD186ED Demonstration Board User’s Manual
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Chapter 1
Quick Start
This chapter provides information that will help you quickly set up and start using
the SD186ED demonstration board.
The SD186ED demonstratio n board is supp orted by th e E86MON board-residen t
debugger. The E86MON software enables you to load, run, and debug programs
on the SD186ED demonstration board. For detailed information on using the
E86MON software, refer to the E86MON
your kit.
For information on how to:
• Connect the SD186ED demonstration board to a PC, see page 1-2
• Invoke the E86MON software, see page 1-4
• Troubleshoot installation problems, see page 1-5
• Locate related sources of information, see page 1-6
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Software User’s Manual included in
SD186ED Demonstration Board User’s Manual
1-1
Connecting to a PC
Follow the steps below to connect the SD186ED demonstration board to your PC.
Installation Requirements
The items listed below are necessary to install and run the SD186ED demonstration
board:
• PC with an available COM port
• Terminal emulation software (such as Microsoft
ProComm Plus) that supports ASCII file transfers, software flow control (Xon/
Xoff), and send break capability.
• Power source for universal power supply
Board Installation
CAUTION: As with all computer equipment, the SD186ED
demonstration board may be damaged by electrostatic
!
1. Remove the board from the shipping carton. V isually inspect the board to verify
that it was not damaged during shipment.
discharge (ESD). Please take proper ESD precautions when
handling any board.
®
Windows® Terminal or
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SD186ED Demonstration Board User’s Manual
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2. Connect the demonstration boar d’s DB-9 serial port to an available COM port.
Use the serial cable included in the SD186ED demonstration board kit an d note
that a DB-9 to DB-25 serial connector adapter is provided if your host system
requires it. The pinou t of th e demonstr atio n board’s serial connector is shown
on page 2-8.
COM1
COM2
serial
cable
DANGER: Make sure the power supply is
plugged into an electrical outlet before connecting
!
3. Connect the power supply to the barrel connector on the SD186ED
demonstration board.
4. Apply power to the board by connecting the power supply to an electrical outlet.
Once the board is powered up, the LEDs (D1-D8) should flash in an oscillating
pattern.
!
SD186ED Demonstration Board User’s Manual
it to the SD186ED demonstration board.
CAUTION: If using your own power supply, ensure that
it is a 5-V supply. Using a 9-V supply will permanently
damage the board.
not
1-3
5. Invoke the terminal emulation program at 19200 baud, no parity, 8 data bits,
and 1 stop bit; enable the software flow con trol (Xon/Xoff), if supported.
6. Reset the board by depressing and releasing the RESET switch (see location
in Figure 2-1 on page 2-3). The LEDs on the board (D1-D8) will flash in an
oscillating pattern for three seconds, as they did upon power up.
During the three-second period while the LEDs are oscillating, type an a in the
terminal window to ensure that the E86MON software uses the correct baud
rate. When the E86MON software receives an a, it adjusts its baud rate (if
necessary) and displays the welcome message and prompt.
If you type a character other than an a, or type no character at all, the E86MON
software still displays the welcome message and prompt, but may be using an
incorrect baud rate. Depressing and releasing the RESET switch gives you
another opportunity to type an a.
7. To display the version of the monitor and the commands available, type ? and
press Enter.
For detailed information about using the E86M ON software, refer to the
™
E86MON
Software User’s Manual included in your kit.
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SD186ED Demonstration Board User’s Manual
Table 1-1. Installation Troubleshooting
Problem Solution
1.0
Nothing happens when
pushing the RESET
button.
The computer does not
respond with the E86MON
software prompt.
After typing a during reset,
the terminal emulation
software displays
unreadable characters.
After a processor reset, the
LEDs do not flash in the
expected oscillating
pattern.
The terminal emulation
program locks up the
software or PC.
Sometimes it is difficult to make a good connection
when pushing the small RESET button. If all else
fails, remove the power supply from the AC
electrical outlet and disconnect and reconnect the
power supply. The LEDs will flash in an oscillating
pattern when the reset is successful
Reset the board by pressing the R E SET switch and
typing an a while the LEDs are flashing in an
oscillating pattern. If this does not work, verify the
power, check the cables, etc.
Check the baud rate setting for the terminal
emulation software. It should be set to 19200. Also
check the word length (8), stop bits(1), and parity(N),
and turn off any hardware flow control.
Check that the power LED is on and the correct
voltage is supplied to the board. Ensure that the
polarity of the power connector is correct.
Check the COM port connection with the target
board. Make sure that the same COM port is selected
in the terminal emulation software. In some PCs if
the correct COM port is not specified, the software
will fail to function—it will lock in a continuous loop
waiting for an answer from the incorrect serial port.
The power LED does not
turn on with power.
Immediately disconnect the power supply. Ensure
that the polarity of the power connector is correct.
This is a very serious fail u re of t he har dware. If the
power source is connected incorrectly, the board will
be permanently damaged.
There is a problem you
cannot resolve.
Contact the AMD Corporate Applications technical
support services (See Chapter 3, “Product Support”
for phone numbers and more information.)
SD186ED Demonstration Board User’s Manual
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For More Information...
If you need more information about:
• SD186ED demonstration board hardware,
see Chapter 2, “SD186ED Demonstration Board Functional Description”
• E86MON software,
see the E86MON
™
Software User’s Manual included in your kit.
• Problems with the demonstration board or the E86MON software,
see Chapter 3, “Product Support”
• SD186ED demonstration board layout and schematics,
see Appendix A, “Layout Diagram, Schematics, and Board Bill o f Material s”
• the Am186ED microcontroller,
see the Am186
™
ED Microcontroller Data Sheet included in your kit.
• the Am186ED microcontroller,
see the Am186
™
ED Microcontroller User’s Manual included in your kit.
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SD186ED Demonstration Board User’s Manual
Chapter 2
SD186ED Demonstration Board
Functional Description
The SD186ED demonstration board provides a completely stand-alone
microcontroller -based evaluation platform in a low-cost , exceptionally small formfactor product. The SD186ED demonstration board was designed to meet the needs
of customers working with the Am186ED microcontroller.
Read the following sections to learn more about the SD186ED demonstration board
hardware:
• “Layout and Placement” on page 2-2
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• “Am186ED Microcontroller Implementation” on page 2-4
• “ROM Space” on page 2-6
• “DRAM” on page 2-6
• “RS-232 Serial Ports” on page 2-7
• “Clock and Reset Logic” on page 2-8
• “Am186 Expansion Interface” on page 2-8
• “PIO Activity LED Indicators” on page 2-11
• “Power Supply” on page 2-12
SD186ED Demonstration Board User’s Manual
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