General Description

The IDT5U49319 is a very low power clock for Freescale

MCU’s. It uses a 1.5V core and Low-Power HCSL

(LP-HCSL) differential outputs for minimal power

consumption. The SATA and SRC outputs are PCIe Gen1/2

compatible.

Features/Benefits

• Various outputs are configurable to run in power down;

supports Wake_On_LAN

• FPGA clock frequency is selectable via SMBus; allows

low-power system standby

• Strapping pin sources SRC outputs from either spreading

or non-spreading PLL; maximum system flexibility

• FLEX clock is pin selectable to be FPGA clock or USB

PHY clock; maximum system flexibility

• TEST pin tri-states all outputs; speeds up board test

• External 25MHz crystal; supports tight ppm

• OE# pins; support SRC power management

• Low power differential clock outputs; reduced power and

board space

• Differential outputs internally terminated to 100

differential impedance; reduced board space

• Space-saving 7x7mm 48-pin VFQFPN with 0.5mm pad

pitch; reduced board space without the need for fine pitch

assembly techniques