Functional Description
MEN Mikro Elektronik GmbH
46
20A014-00 E2 – 2007-08-16
2.13
PMC Slots
The A14C board provides two PMC slots for extension such as graphics, Fast
Ethernet etc. The market offers lots of different PMC mezzanines.
The signaling voltage is set to 3.3 V, i. e. the CPU board has no voltage key (see
Figure 6, Installing a PMC mezzanine module, on page 47
) and can only carry PMC
mezzanines that support this keying configuration. Mezzanine cards may be
designed to accept either or both signaling voltages (3.3 V / 5 V).
The PMC slots support 32-bit and 64-bit PCI bus operation at 33 MHz or 66 MHz.
The connector layout is fully compatible to the IEEE1386 specification. For
connector pinouts please refer to the specification (see
Chapter 6.1 Literature and
Web Resources on page 118
).
PMC slot 0 supports rear I/O connection. PMC slot 1 does not support rear I/O! (See
also
Figure 2, Map of the Board – top view, on page 20
.)
Please note that PMC I/O signals are directly connected to connector P2. If you
use FPGA I/O signals (e.g. COM10, GPIO) via P2, you must make sure that
these signals do not interfere with PMC I/O signals, since this may cause
damage to the CPU board.
See
Chapter 2.16.16.1 Rear I/O using VMEbus P2 on
page 77
for more details and for pin assignments of P2.
Connector types:
• 64-pin, 1-mm pitch board-to-board receptacle according to IEEE 1386
• Mating connector:
64-pin, 1-mm pitch board-to-board plug according to IEEE 1386
!
!
