Board Features
Hardware
‹ PES12T3G2 PCIe 3 port switch
– Three x4 ports, 12 PCIe lanes
– PCIe Base Specification Revision 2.0 compliant
– 12 GBps (96 Gbps) aggregate switching capacity
– Up to 2048 byte maximum Payload Size
– Automatic lane reversal and polarity inversion supported on all lanes
– Automatic per port link width negotiation to x4, x2, x1
– Load configuration from an optional serial EEPROM via SMBUS
‹ Upstream, Downstream Port
– One edge connector on the upstream port, to be plugged into a slot with at least x4 capable on a
host motherboard
– Two slot connectors on the downstream ports, for PCIe endpoint add-on cards to be plugged in.
These slot connectors are x16 mechanically but electronically connected as x4 only.
‹ Numerous user selectable configurations set using onboard jumpers and DIP-switches
– Source of clock - host clock or onboard clock generator
– Two clock rates and spread spectrum settings
– Boot mode selection
‹ SMBUS Slave Interface (4 pin header)
‹ SMBUS Master Interface connected to the Serial EEPROMs through I/O expander
‹ “Attention” button for each downstream port to initiate a hot swap event on each port
‹ Four pin connector for optional external power supply
‹ Push button for Warm Reset
‹ Several LEDs to display status, reset, power, “Attention”, etc.
‹ One 10-pin JTAG connector (pitch 2.54 mm x 2.54 mm)
Software
There is no software or firmware executed on the board. However, useful software is provided along
with the Evaluation Board to facilitate configuration and evaluation of the PES12T3G2 within host systems
running popular operating systems.
‹ Installation programs
– Operating Systems Supported: Windows2000, WindowsXP, Vista, Linux
‹ GUI based application for Windows and Linux
– Allows users to view and modify registers in the PES12T3G2
– Binary file generator for programming the serial EEPROMs attached to the SMBUS.
Other
‹ A metal bracket is required to firmly hold in place two endpoints plugged into the EB12T3G2 board.
‹ An external power supply may be required under some conditions.
‹ SMBUS cable may be required for certain evaluation exercises.
‹ SMA connectors are provided on the EB12T3G2 board for specific test points.