PCIe Gen4 support ultra-low power clock generator with four programmable outputs & EEPROM

The CDCI6214 device is an ultra-low power clock generator. The device

selects between two independent reference inputs to a phase-locked loop and generates up to

four different frequencies on configurable differential output channels and also a copy of

the reference clock on a LVCMOS output channel.

Each of the

four output channels has a configurable integer divider. Together with the

output muxes, this allows up to five different frequencies. Clock distribution dividers are

reset in a deterministic way for clean clock gating and glitch-less update capability.

Flexible power-down options allow to optimize the device for lowest power consumption in

active and standby operation. Typically four 156.25MHz LVDS outputs consume 150mW at 1.8V.

Typical RMS jitter of 386fs for 100MHz HCSL output enhances system margin for PCIe

applications.

The CDCI6214 is configured using internal registers that are accessed

by an I2C-compatible serial interface and internal EEPROM.

The CDCI6214 enables high-performance clock trees from a single

reference at ultra-low power with a small footprint. The factory- and user-programmable

EEPROM of the CDCI6214 is designed as an easy-to-use,

instant-on clocking feature with low power consumption.