Publication No. PPC11A-HRM/1
Functional Description 31
4.3.4 Memory Map
The T2081/T1042 processors support a fully programmable memory map, shared
between each of the processing cores. Memory windows are software-configured,
and the hardware does not carry out any configuration of the memory map. For this
reason, no memory maps are provided in this manual.
Where addresses are provided in this manual, they are stated as a fixed offset from a
software-programmable base address.
See applicable software manuals for more information.
4.3.5 Reset Configuration Word
The processor is configured, during reset, by loading a data structure called the
Reset Configuration Word (RCW) from non-volatile memory. This specifies the
operating frequency and numerous configuration options of the processor.
Normally the RCW is loaded from Abaco-configured settings within the FPGA and
no user interaction is required. If more sophisticated configuration is required, it is
possible to load the data structure from an I
2
C EEPROM instead, by setting the
relevant software configuration option in the I
2
C EEPROM DIP Switch.
CAUTION
Do not change the source of the RCW unless advised to do so by Abaco. Incorrect or invalid settings may
damage the processor or prevent the PPC11A from booting.
When booting from the Recovery boot area, the Abaco-configured RCW settings are
always used. This allows the PPC11A to be recovered if the data in the I
2
C EEPROM
is invalid or becomes corrupted.
4.3.6 Processor Power Management
The T2081/T1042 devices implement the following power management features:
•
Independent control of Doze/Nap modes for each processing core
•
Device sleep state
Содержание PPC11A
Страница 1: ...Hardware Reference Manual PPC11A 6U VME Single Board Computer Edition 1 Publication No PPC11A HRM 1 ...
Страница 27: ...Publication No PPC11A HRM 1 Functional Description 27 Figure 4 2 Block Diagram T2081 ...
Страница 113: ...Publication No PPC11A HRM 1 Connectors 113 Figure 6 2 Rear Connector Position ...