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CURTISS-WRIGHT CONTROLS EMBEDDED COMPUTING
PRODUCT OVERVIEW
The Compact CHAMP-AV IV also contains an alternate serial PROM which can be used to
configure the cOBIC in the event that there is a problem with the main PROM. This PROM is
not upgradeable by the customer and puts the cOBIC into a known working state. Switch
SW4 is used to select the main PROM and the alternate PROM (see “Configuring Switches”
on page 2-8). A block diagram of the cOBIC is shown below in Figure 1.3.
FIGURE 1.3: cOBIC Block Diagram
32-bit
Flash
16-bit
Interrupt
Output
Device Bus A Interface
Device Bus B Interface
Internal Data Bus
~FIFO_EMPTY
External Interrupts
~FIFO_EMPTY
Internal Interrupts
~FIFO_EMPTY
~FIFO_EMPTY
~FIFO_EMPTY
Device C FIFO
Device D FIFO
Device E FIFO
Watchdogs
General
Purpose
I/O
Clocks
Semaphores
Device A FIFO
Device B FIFO
Device Bus C
Interface
16-bit
cOBIC Feature
Summary
General Board Support
32-bit
Device Bus D
Interface
Device Bus E
Interface
16-bit
LED
Control
16-bit
As seen in Figure 1.3 above, the cOBIC incorporates the following features:
An Internal Interrupt Module
• Twenty-One internal interrupts
•
Interrupt detection and steering
•
Interrupt masking
An External Interrupt Module
• Twenty-Four external interrupts supplied to the cOBIC
•
Interrupt detection and steering
•
Interrupt masking
An Inter-Processor Module
• Mailbox Interrupts supported by five FIFOs, one per processor. Only the processor that
"owns" a FIFO can read it while all processors can write it.
•
Dedicated inter-processor interrupts
•
Sixteen semaphore registers
•
Five Watchdog timers, one per processor.
814256 VERSION 2 FEBRUARY 2006
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