Specifications

INTRODUCTION
PP 41x/03x 1-3
1.2.4 SDRAM
The SDRAM controller within the E7520 MCH supports dual DDR2 400MHz memory channels with
ECC data protection. These provide a maximum memory transfer bandwidth of 6.4 Gbytes/s. The
memory is implemented with DDR2 Registered ECC SODIMM modules. Two 200-pin SODIMM
sockets are provided, one per channel. The board will accept modules having a capacity up to 2
Gbytes each. Hence a maximum of 4 Gbytes of memory may be fitted to the board.
1.2.5 PCI Busses
The 6300ESB ICH provides two of the on-board PCI busses. The primary bus is 64-bits wide and
provides a high performance, up to 528 Mbytes/s, connection between the 6300ESB ICH and PMC
site 1. The secondary PCI bus is 32-bits wide and provides a lower performance, up to 132
Mbytes/s, connection between the 6300ESB ICH and a Silicon Motion SM722 Graphics controller.
A PLX Technology PEX8114 PCI Express to PCI-X bridge provides a third, very high performance
64-bit PCI / PCI-X bus. This bus can operate in PCI mode at either 33 MHz or 66 MHz, or in PCI-X
mode at 100 MHz and offers a bandwidth of up to 800 Mbytes/s. This bus connects to PMC site 2
and a PLX Technology PCI6540 PCI-X to PCI bridge. The latter implements the CompactPCI
backplane interface. The PEX8114 is connected to the E7520 MCH by a 4-lane PCI Express link,
which offers a bandwidth of up to 1 Gbyte/s in each direction.
1.2.6 EPROM
The board contains a 1 Mbyte Firmware Hub (FWH) for the BIOS code and fixed data and factory
test software.
1.2.7 CompactFlash™
The PP 41x/03x contains an on-board CompactFlash site, which is located below PMC site 1. The
CompactFlash site primarily supports Type 1 modules. Type 2 modules may be fitted subject to
them not interfering mechanically with the PMC module. CompactFlash provides a flexible and
cost-effective alternative to on-board Flash memory for application program and data storage.
1.2.8 EIDE Controllers
The PP 41x/03x has two EIDE/Ultra ATA100 interfaces. The CompactFlash site uses the
secondary EIDE interface. The primary EIDE interface is available via an on-board connector for
use by the optional on-board disk drive or dual CompactFlash carrier.
1.2.9 USB
The PP 41x/03x provides four USB channels, one via the front panel shared console connector and
three via the CompactPCI J5 connector. All four USB channels support both USB 1.1 (1.5 Mbit/s
and 12 Mbits/s) and USB 2.0 (480 Mbits/s) operation.
1.2.10 PMC Interfaces
Two PMC interfaces, which support single width 64 or 32-bit PMC modules complying with the
IEEE 1361.1 standard, are provided.
PMC site 1 will operate at either 33 MHz or 66 MHz and supports both 3.3V and 5V PCI signaling.
PMC site 2 will operate at either 33 MHz or 66 MHz in PCI mode or at 100 MHz in PCI-X mode. It
supports only 3.3V signaling. PMC site 2 also provides an XMC connector. This connector has an
8-lane PCI Express link to the E7520 MCH, which offers a bandwidth of up to 2 Gbytes/s in each
direction.
The PMC interfaces will also accept dual function and Processor PMC modules. The latter will
operate only in non-Monarch mode.