GE TELUM ASLE11, Справочное руководство

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CHAPTER 7
Function Blocks
Chapter Scope
This section gives a brief overview of the software interfaces of onboard
devices on the ASLP11 AMC Single Board Computer.
Processor
The Intel Pentium M processor family provides high performance with low
power and features Enhanced Intel SpeedStep® technology which
provides
the ability to dynamically adjust the power and performance of the processor
based on CPU demand. This results in optimal performance without
compromising the power performance of the ASLP11.
The processor die is thermally protected by two thermal monitor features.
When reaching a maximum safe operating temperature the Thermal Control
Circuit in the processor activates a throttling feature and reduces the voltage
and frequency dynamically. If this feature is active the ASLP11 will indicate
it with short blinks at the red LED. In case of a catastrophic die overheating
(above 125°C) the ASLP11 switches off the processor core voltage. Recovery
from this catastrophic event can be done with a power off-on cycle only.
Memory Controller
The memory controller in the ASLP11 3100 chipset from Intel supports
double data rate ‘2’ synchronous DRAM (DDR II SDRAM) with a data bus
width of 64 bits + ECC. One or two banks are provided by the ASLP11 with
a size of either 512 Mbytes up to 2 GBytes. This results in a minimum
memory size of 512 Mbytes and a maximum total size of 4 Gbytes.
PCI-Express
The devices onboard and to the AMC connect are based on PCI express
(PCIe). The ASLP11 chipset works as a PCIe root complex (‘Master’) and
has an onboard PCIe switch PEX8518 from PLX towards the AMC connect.
This PCIe switch gives the possibility to work as an end point device
GE Intelligent Platforms – ASLP11 Hardware Reference Manual, Third Edition Page 45