Kontron speedMOPSlcdCE, User Manual

Page: 27 / 99

KONTRON
speedMOPSlcdCE User’s Guide 19 ISA and PCI Bus Expansions
7.
ISA AND PCI BUS EXPANSION
The design of the speedMOPSlcdCE offers ISA- and PCI-bus signals on PC/104 and PC/104-Plus
connectors. The PC/104-Plus standard is downward compatible with PC/104 and enables the use of
standard PC/104 and PC/104-Plus adapter cards.
7.1
PC/104 Bus (ISA part)
The PC/104 bus consists of two connectors that use 104 pins in total.
 XT bus connector (64 pins)
 AT bus connector (40 pins, which is optional for 16-bit, data-bus system)
The pin-out of the PC/104 bus connectors corresponds to the pin-out of the ISA bus connectors
with some added ground pins. The two PC systems with different form factors are electrically
compatible.
The
XT bus connector
, Row A and B.
The corresponding 64-pin female header (ISA bus = 62pins) has two added ground pins at the end
of the connector (Pin A32 and Pin B32). The pin-out between PC/104 bus and XT ISA bus is identical
between A1 - A31 and B1 - B31.
The
AT bus extension connector
, Row C and D.
The corresponding 40-pin female header (ISA bus = 36 pins) has four added ground pins, including
two on each side of the connector. To avoid confusion, the first two pins are defined as Pin C0 and
Pin D0. The additional ground pins at the end of the connector are defined as C19 and D19. The pin-
out between PC/104 bus and AT ISA bus is identical between C1 - C18 and D1 - D18.
7.1.1.
PC/104 Connectors
The speedMOPSlcdCE features the XT bus and AT bus extension on two, dual-row socket connectors
with a 2.54mm x 2.54mm grid (0.1" x 0.1").
The PC-104 bus is available through Connectors J6B and J6C. To find the location of the connectors
see the Appendix E: Connector Layout chapter.
A description of the signals, including electrical characteristics and timings is beyond the scope of
this document. Please refer to the official ISA bus and PC/104 specifications for more details.