The 89KTPES5T5 Evaluation Board (also referred to as EB8T5A*) provides an evaluation platform for the 89HPES8T5A switch. It is also a cost effective way to add a PCIe downstream port (x1) to an existing system with a limited number of PCIe downstream ports. The 89KTPES5T5 eval board is designed to function as an add-on card to be plugged into a x4 PCIe slot available on a motherboard hosting an appropriate root complex, microprocessor(s), and four downstream ports. The 89KTPES5T5 is a vehicle to test and evaluate the functionality of the PES8T5A chip.

Customers can use this board to get a headstart on software development prior to the arrival of their own hardware. The 89KTPES5T5 is also used by Renesas to reproduce system-level hardware or software issues reported by customers. 

*Note: References to the 89HPES8T5A also apply to the 89HPES6T5 and 89HPES5T5 unless otherwise indicated.


  • Hardware
    • PCIe 5 port switch
    • Upstream, Downstream Port
    • Numerous user selectable configurations set using onboard jumpers and DIP-switches
    • Vaux Support
    • 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 14-pin JTAG header
  • Software
    • Installation programs
    • GUI based application for Windows and Linux



Type Title Date
Manual - Hardware PDF 3.00 MB
Manual - Development Tools PDF 2.56 MB
Schematic ZIP 917 KB
3 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
Software & Tools - Software Log in to Download ZIP 104.57 MB
Software & Tools - Software Log in to Download ZIP 54.45 MB
Software & Tools - Software Log in to Download ZIP 48.85 MB
3 items