CPC522
C P C 5 2 2 U s e r M a n u a l
39
© 2 0 2 2 F a s t w e l V e r . 0 0 1
Fig. 3- 1 Numbering of the interfaces supported by the CPC522 in the Compact PCI Serial backplane.
3.1.2 Interaction with power supply
The CPC522 has a universal power supply circuit that allows the power supply (PSU) to operate in
two modes: with support of PSU control (similar to the control used in an ATX PSU) and without
the control support.
The power supply control is supported by the CPC522 module, in which case the power supply
source must support the control function and have:
a built-in +5V standby power supply voltage with a minimum load current from 1A;
a
“power on” input (PS_ON#).
The control logic of a power supply is determined by the FPGA microcode of the CPC522 CPU
module. It can be controlled in any of the following ways: by the
“Power Button” on the 19” frame
control panel, by the programmable extractor lever button (see subparagraph 5.1), or by the ACPI
software module of the operating system used. The
“Power Button” is connected to the “Utility”
connector, which is located on the Compact PCI Serial backplane. In addition to that, this
connector is used to connect the power supply control input (PS_ON#), as well as the external
“Reset” button.
3.1.3 Features of information storage system implementation
According to the specification [1] the CPC522 module supports the information storage devices
installed in the backplane expansion slots. The drives are numbered from the far right slot (see
Figure 3-2).
As mentioned before, the CPC522 module supports up to 5 SATA drives (0 through 4)
simultaneously. Other backplane slots are not supported for operation with SATA drives.
All SATA lines support transfer rates up to 6 Gb/s.