Thales Computers 2-1 CPMC-1553R User’s Guide, CA.DT.356-0e
Chapter 2 −
−−
− Operation

2.1 Functional Description

The CPMC-1553R is a PMC card with one or two, dual-redundant MIL-STD-1553B buses, eight user
inputs, and eight user outputs. The board interfaces to the user I/O through the PMC connector Pn4. Two
PMC connectors, Pn1 and Pn2 provide a direct connection to the PCI Bus. The Altera FLEX10
Programmable Logic Device (PLD) and the ILC-DDC Mini-ACE Device provide the interface between the
PCI bus and the MIL-STD-1553B bus. Each MIL-STD-1553B bus is implemented using an ILC-DDC
Mini-ACE device with 64kB x 16 of shared RAM. The implementation is shown in Figure 3.
PCI Interface
(Altera PLD)
1553 Interface
(ILC-DDC
Mini-ACE Devices)
Pn1 Pn2
PCI Bus
Pn4
Local Bus Signals
MIL-STD-1553_1 TX/RX Channel A/B
MIL-STD-1553_1 RT ad dress
MIL-STD-1553_2 TX/RX Channel A/B
MIL-STD-1553_2 RT ad dress
9903-1
User Inputs
User Outputs
Figure 3. CPMC-1553R Implementation Diagram