MPCBL0050N02Q Intel, MPCBL0050N02Q Datasheet - Page 30

• Manufacturer Part Number: MPCBL0050N02Q
• Manufacturer: Intel

Specifications of MPCBL0050N02Q

• Lead Free Status / RoHS Status: Supplier Unconfirmed

2.2.7.2
Note:
2.2.7.3
Note:
2.2.8
Intel NetStructure
Technical Product Specification
30
®
FWH 1 (Backup/Recovery EFI)
FWH 1 stores the recovery EFI BIOS image. In the event of a checksum failure on the
primary BIOS operational code, BIOS requests the IPMC to switch the flash device so
that the board is able to boot from FWH1 for recovery.
FWH1 also stores its own configuration which is independent of the FWH0 settings.
EFI Backup Mechanism
The on-board Intelligent Platform Management Controller (IPMC) manages which of the
two BIOS flash devices is selected during the boot process. The IPMC can change the
BIOS flash device selection from FWH0 to FWH1 and reset the processor.
The default state of this control configures the primary Firmware Hub (FWH0) device ID
to be the boot device; the secondary FWH1 is assigned the next ID. The secondary
FWH1 responds to the address range just below the primary FWH0 in high memory.
The IPMC sets the ID for both FWH devices. Boot accesses are directed to the FWH with
ID = 0000; unconnected ID pins are pulled low by the FWH device. In this way, the
IPMC may select which flash device is used for the boot process.
It is possible to force booting from FWH1 by changing on-board DIP switch setting.
Refer to
On-board DC/DC converters
Power to the MPCBL0050 board is delivered from the two -48V input rails through the
backplane power connector (P10).
Most onboard voltages are obtained by a single-stage conversion. Primary and
secondary side controllers are based on NSC devices. Transformers from Pulse
Engineering* ensure basic insulation up to 1500V.
Voltage sequencing is implemented via CPLD which is part of IPMC circuitry. 3.3V for
IPMC is provided independently from 3.3V to the payload. After E-keying, this voltage
is forwarded further to other devices according to the power sequence.
The power module, which is part of the baseboard, contains all necessary support for
meeting AdvancedTCA requirements such as fusing, ORing dual voltage feeds, hot-
swap capability, in-rush current protection, and hold-up circuit.
Figure 9
MPCBL0050 Single Board Computer
Section 3.4
shows high-level power distribution on the SBC.
for details.
MPCBL0050—Feature Overview
Order Number: 318146-001
September 2007