Renesas Electronics RC22112A FemtoClock™ Clock Generator

Renesas Electronics RC22112A FemtoClock™ Clock Generator is a fully integrated, low-power, high-performance clock generator. This generator features PCIe Gen 1-6 CC, SRIS, SRNS support, and less than 100fs-RMS low jitter. The RC22112A generator supports 1MHz I²C, 400kHz SMBus, or 50MHz SPI serial port, up to six fractional output dividers, and 12 integer output dividers. This clock generator provides reference clocks for high-speed serial links up to 28Gbps Ethernet in fabric cards in data center equipment. Typical applications include switches/routers, clock generation for 10Gbps/25Gbps/40Gbps/100Gbps/200Gbps/400Gbps Ethernet PHYs in switch fabric cards, medical imaging, and professional audio and video.

Features

Low power, less than 1.4W typical
Low jitter, less than 100fs-RMS
PCIe Gen 1-6 CC, SRIS, and SRNS support
Up to six fractional output dividers and 12 integer output dividers
Each fractional output divider is free-run and locked to APLL
Each fractional output divider can be configured as NCO or DCO
LVCMOS, LVPECL, LVDS, HCSL, CML, SSTL, and HSTL output modes supported with programmable output swing and common mode voltage

One crystal/XO input
Up to nine GPIO pins programmable to device select or system monitor options
Supports 1MHz I²C, 400kHz SMBus, or 50MHz SPI serial port
Internal non-volatile memory (up to 16 different configurations), or external serial I²C EEPROM provides default device settings on power-up
2.5V and 3.3V core and 1.8V, 2.5V, and 3.3V output operation
-40° to 85°C industrial operation temperature range