64 PPC11A 6U VME Single Board Computer
Publication No. PPC11A-HRM/1
4.24
FPGA
The PPC11A contains Lattice MachXO2 family Master and Slave FPGA devices.
These implement various support functions such as:
•
Glue logic
•
Reset control
•
Voltage translation
•
Watchdog
•
Timers
•
UART interface to the BMM
for the implemented register set.
4.24.1 Reset Configuration Word
The FPGA provides an RCW to the processor, which is used to perform various
chipset initialization.
4.24.2 Timings
The FPGA stores timing parameters for devices such as the SDRAM and the Local
Bus.
4.24.3 Serial Presence Detect
The SPD data for the main memory array is held in a virtual I
2
C ROM that is
embedded within the FPGA.
4.24.4 AXIS Support
AXIS (Advanced Multiprocessor Integrated Software) is a set of software modules
that can be used to accelerate the design, development, testing and deployment of
complex DSP and multiprocessing platforms for real-time applications such as radar,
sonar, communications and image processing.
AXIS requires two external hardware signals (AXIS_CLK and AXIS_RST) to allow
boards to synchronize over the backplane while running AXIS software.