The RC21008A Evaluation Board (EVB) is designed to support users evaluating the RC21008A using clock generation in synthesizer mode for PCIe Gen 1-6 compliance. When the EVB is connected via USB to the user’s computer running Renesas Integrated Circuit Toolbox (RICBox™) Software, the RC21008 can be configured in various frequencies with best-in-class performance. The RC21008 offers various features with total 8 pairs of differential outputs. Each pair of output can be programmed to LVCMOS style, LVDS style, and LP-HCSL style outputs. There are 5 general purpose input/output (GPIOs) and 4 general purpose input (GPIs) to support output enables, power down, configuration selection, and status outputs. Voltage levels for VDDX, VDDR, VDDA, VDDD, VDDO1, VDDO2, VDDO3, VDDO4, VDDO5, and VDDO6 can be set by jumper. The EVB kit also has a socket to load a configuration from EEPROM.


  • Crystal or Crystal overdrive (REFIN) via SMA
  • Available sense lines on Crystal Overdrive and CLKIN.
  • Onboard I2C and SPI communications.
  • 4 GPI and 5 GPIO.
  • GPI/GPIO LED indicator and DIP switch.
  • Test points on Outputs for Hi-Z probes.
  • Jumper selectable voltage setting for 3.3V/2.5V/1.8V powered from USB-C.



Type Title Date
Manual - Hardware PDF 1.59 MB
Application Note PDF 406 KB
Guide PDF 485 KB
Manual - Software PDF 1.73 MB
Manual - Software PDF 970 KB
5 items

Design & Development

Software & Tools

Software & Tools

Software title
Software type
Renesas IC Toolbox (RICBox)
The Renesas IC Toolbox (RICBox) software platform enables customers to configure Renesas devices on evaluation kits when attached to the computer running the software.
Software Package Renesas
1 item

Software Downloads

Type Title Date
PCB Design Files ZIP 5.09 MB
1 item

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