Features
- 1.8V/2.5V/3.3V flexible power rails
- Typical 150fs RMS 12kHz - 20MHz phase jitter
- 5/8/12 outputs with integrated crystal options
- 1kHz to 650MHz LVDS/LP-HCSL outputs
- 1kHz to 200MHz LVCMOS outputs
- Programmable hardware configuration select-pins
- PCIe Gen 5/6/7 ready
- Space saving packages 4mm x 4mm, 5mm x 5mm, 6mm x 6mm
- Integrated crystal option for space saving and BOM optimization
Description
The RC21xxxB (RC21012B and RC21008B) is a member of Renesas's VersaClock® 7 programmable clock generator family. It is intended for high-performance computers, data communications, and industrial applications, designed to be placed immediately adjacent to a PHY, switch, ASIC or FPGA that requires several reference clocks with jitter performance 150fs typical RMS.
Up to 27 configurations reusable across multiple designs may be stored in on-chip One-Time Programmable (OTP) memory or external I2C EEPROM. Redundant input is available for backup and used as a reference clock where needed.
Parameters
| Attributes | Value |
|---|---|
| App Jitter Compliance | PCIe Gen1, PCIe Gen2, PCIe Gen3, PCIe Gen4, PCIe Gen5, PCIe Gen6, PCIe Gen7 |
| Outputs (#) | 16, 24 |
| Output Type | LVDS, LP-HCSL, LVCMOS |
| Output Freq Range (MHz) | 0.001 - 650 |
| Input Freq (MHz) | 1 - 650 |
| Inputs (#) | 2 |
| Input Type | LVDS, LP-HCSL, LVCMOS |
| Output Banks (#) | 6 |
| Core Voltage (V) | 1.8V, 2.5V, 3.3V |
| Output Voltage (V) | 1.8V, 2.5V, 3.3V |
| Phase Jitter Typ RMS (ps) | 0.15 |
| Prog. Interface | OTP, I2C, SPI, SMBUS, EEPROM |
| Spread Spectrum | Yes |
Application Block Diagrams
 | Reconfigurable High-Performance Clocking System A reconfigurable clocking system enables precise synchronization, real-time adaptability, and design reuse. |
 | Power & Timing System for AI Accelerator Card |
Additional Applications
- High-performance computing
- Datacenter accelerators
- Switches/Routers
- Synchronous Ethernet
- Industrial