Customer Reference Board (CRB) Features
Getting Started Guide
35
4.2.7
PCIe* Slots
The SoC provides 16 lanes of PCIe* Version 2.0. The PCIe* bus slots are routed in two x8
channels:
•
Channels 0-7 connect to a PCIe* multiplexor (Pericom* P13PCIE3415) that provides routing
to either the x16 Slot 4 or shares bandwidth with Slot 3, a x4 slot. The P13PCIE3415 switch
can auto-configure to two x4 Channels if both slots are populated or one x8 channel if the
only populated slot is the x16.
•
Channels 8-15 are routed to a PLX PCIe* Switch (PEX8624). From this switch, the channels
are bifurcated into eight lanes routed to the Twinville Dual 10 GbE controller and to PCIe* x4
Slot 1 and x4 Slot 2. The bandwidth from the eight lanes of PCIe* is shared between the PCIe*
slots and network controller.
4.2.8
ATX Power Connector
The ATX power connector is located on the lower right-hand corner of the CRB; located below
the UDIMM sockets (see
). An ATX Power connector LPC daughter card connects to
this male connection to provide power to the Mohon Peak CRB. DO NOT connect the
daughter card to the Management connector on the left side of the board and power it on. This
will permanently disable the board.
4.2.9
Management Connector
The Management connector is at the lower left-hand corner of the CRB; located below the dual
BIOS Flash chip enclosures. (see
) This connector can be used for creating
management connections to the Mohon Peak CRB. This provides a way to monitor SMBUS
variables and functions as well as allowing communication with different modules on the
board. For more information on the use and function of this connector, please refer to page 53
in the Intel® Atom® Processor C2000 Product Family - Mohon Peak A2 Customer Reference
Board Schematic, Revision 1.0 (CDI document number 506415).
4.2.10
Trusted Platform Module
The Trusted Platform Module (TPM) component is connected to the SoC Low Pin Count
(LPC) bus providing trusted platform functionality. The component manufacturer/model used
on the Mohon Peak CRB is the ST19NP18ER28PVMK from ST Microelectronics*. The TPM
uses embedded TPM 1.2 firmware and has a 33-MHz LPC bus. The TPM is located on the
backside of the board near the Management Connector (
