Kontron AT8902 - Manual (Page 37)

AT8902 Hardware Description
Page 3 - 3 AT8902 User Guide
The main building blocks of the base board are:
• CPU and Memory
• Base Switch
• Fabric Switch Interface
• AMC Bays
• IPMI
• Synchronization clock
• RTM Interface
• Power Supply
3.1.1 CPU and Memory
The CPU is an IBM PowerPC 405 GPr 400MHz 32-bit RISC processor with 16KB D-cache.
PCI Interface
The PCI interface is a 32bit/66MHz system to control the on-board Broadcom BCM56500 base
interface switch and the optional fabric mezzanine module. The internal PCI arbiter of the Pow-
erPC 405 GPr is used.
The virtual PCI slots are ordered in the following way:
Table 3-1: PCI Slots
Fast Ethernet Management Interface
The internal Fast Ethernet MAC of the PowerPC 405 GPr is used as a management interface.
Additionally, a Fast Ethernet PHY transceiver and a RJ45 Connector with integrated magnetics
and two LED's, located on the front panel, are used to complete the network interface.
The PHY is controlled via the MDIO interface of the PowerPC 405 GPr. The MDIO address is
set to 0. The default setting of the PHY is to operate in auto-negotiation enabled mode, 10/100,
Full or Half duplex.
The PHY drives the two LEDs of the RJ 45 Connector, buffered by the CPLD.
The connection is established with a straight through Ethernet cable.
PCI-Slot IDSEL Device
1 0 Base Interface Switch: Broadcom BCM56500 / BCM56300
2 1 Fabric Mezzanine Module