26 SBC330 3U VPX Single Board Computer
Publication No. SBC330-0HH/3
5.2.3 MPX (Platform) Bus
The
MPX
bus,
connecting
the
processing
cores
to
the
host
bridge
functions,
is
integrated
into
the
device
and
so
can
run
at
up
to
533
MHz
(build
level
5),
(600 MHz
for
build
level
1):
more
than
twice
as
fast
as
an
external
implementation.
This
gives
increased
memory
bandwidth
and
reduced
latency,
allowing
a
significant
performance
increase.
5.3 Memory
5.3.1 Memory map
The
SBC330
supports
a
fully
programmable
memory
map,
defined
by
the
MPC8641D
processor.
A
default
memory
map
for
the
VxWorks
6.6
BSP
release
(TB0787
‐
001)
is
included
here
(Figure
5
‐
2)
for
general
reference,
but
since
the
memory
map
is
almost
completely
software
configurable,
see
the
applicable
software
manual
for
more
information.
Table 5-2 VxWorks Default Memory Map
Internal 32-bit Core 0
Internal 32- bit Core 1
FFFF FFFF
FFFF FFFF
8 MByte Boot Flash
Core 1 boot Flash when defined in
Firmware
FF80 0000
FF80 0000
FF7F FFFF
FF7F FFFF
FF00 0000
FF00 0000
FEFF FFFF
FEFF FFFF
CCSR
FEF0 0000
FEF0 0000
FEEF FFFF
FEEF FFFF
Shared memory
FEE0 0000
FEE0 0000
FEDF FFFF
FEDF FFFF
FE80 0000
FE80 0000
FE7F FFFF
FE7F FFFF
PCIe 2 I/O
FE40 0000
FE40 0000
FE3F FFFF
FE3F FFFF
PCIe 1 I/O
FE00 0000
FE00 0000
FDFF FFFF
FDFF FFFF
FC00 8000
FC00 8000
FC00 7FFF
FC00 7FFF
FPGA registers
FC00 0000
FC00 0000
FBFF FFFF
FBFF FFFF
AXIS
F800 0000
F800 0000
F7FF FFFF
F7FF FFFF
Reserved
F000 0000
F000 0000
EFFF FFFF
EFFF FFFF
User Flash
E000 0000
E000 0000