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TS-2200 User's Manual
11 LED and Jumpers
The TS-2200 has three LEDs available for user software. The user LED (labeled D2) can be used for
diagnostics, status messages, and simple output. This signal is also available as a digital output on
the DIO2 port. When power is first supplied to the TS-2200, the user LED is immediately turned on
under hardware control. Once the processor begins execution, the LED is turned off, then flashed on
and off again briefly. After boot, this LED is reserved solely for user applications.
LEDs D3 and D4 are controlled by the CS8900A Ethernet Controller, and provide feedback on the
status of the network. See Section 8 above for details.
If the user LED does not turn on at all when power is applied, the most likely problem is the power
supply. Check that the +5V and GND connections are not reversed. A diode protects the board
against damage in such a situation, but it will not run.
BIOS interrupt functions are used to interface software with the user LED and option jumper JP3.
Please see Appendix C for further details and the utility disk for example code.
12 PC/104 Bus Expansion
The PC/104 is a compact implementation of the PC/AT ISA bus ideal for embedded applications.
Designers benefit from using an already-developed standard, rather than creating their own. Further,
Pin #
Signal Name
A2 - A9
D7 through D0
A10
IOCHRDY
A11
EN
A12 - A31
A19 through A0
A32
GND
B1
GND
B2
RESETDRV
B3
+5V
B4
IRQ9
B11
SMEMW#
B12
SMEMR#
B13
IOW#
B14
IOR#
B20
SYSCLK (8.33 MHz)
B21
IRQ7 †
B22
IRQ6 †
B23
IRQ5 †
B24
IRQ4 †
B25
IRQ3 †
B28
BALE
B29
+5V
B30
OSC
B31
GND
B32
GND
Table 6 - Supported PC/104 Signals
†
these signals are also connected
to the DIO port.
the presence of a compact form-factor PC
compatible standard has encouraged the
development of a broad array of off-the-
shelf products, allowing a very quick time
to market for new products.
The electrical specification for the PC/104
expansion bus is identical to the PC ISA
bus. The mechanical specification allows
for the very compact implementation of the
ISA bus tailor made for embedded
systems. The full PC/104 specification is
available from the IEEE Standards Office
under # IEEE P996.1 (see Appendix E for
further information). Basically, this bus
allows multiple daughter boards in a 3.6
inch by 3.8 inch form factor to be added in
a self-stacking bus. Since the electrical
specs are identical (except for drive levels)
to a standard PC ISA bus, standard peripherals such as COM
ports, Ethernet, video, LCD drivers, and Flash drives may be easily
added using standard drivers.
The TS-2200 implements a sub-set of the 8-bit version of the
PC/104 bus. We have found this allows the support of the vast
majority of PC/104 boards including all of the above mentioned
examples. The one feature missing is DMA, which few PC/104
boards use.
See Appendix A for information on PC/104 pin numbering
13
Technologic Systems
Pin #
Signal Name
A1
IOCHCHK#
B5
-5V
B6
DRQ2
B7
-12V
B8
ENDXFR#
B9
+12V
B15
DACK3# ‡
B16
DRQ3 ‡
B17
DACK1#
B18
DRQ1
B19
REFRESH#
B26
DACK2#
B27
TC
Table 7 - Unsupported PC/104
Signals
‡ PC/104 expansion cards must not
connect to these pins.
11/06/2000
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