5P49V5944 datasheet(1/32 Pages) IDT

Part #	5P49V5944

Description	Generates up to two independent output frequencies

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Manufacturer	IDT [Integrated Device Technology]

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DATASHEET

5P49V5944 REVISION A 07/20/15

1

Programmable Clock Generator

5P49V5944

Description

The 5P49V5944 is a programmable clock generator intended

for high performance consumer, networking, industrial,

computing, and data-communications applications.

Configurations may be stored in on-chip One-Time

Programmable (OTP) memory or changed using I2C

interface. This is IDTs fifth generation of programmable clock

technology (VersaClock® 5).

The frequencies are generated from a single reference clock.

The input reference can be either a crystal or an LVCMOS

reference clock.

Two select pins allow up to 4 different configurations to be

programmed and accessible using processor GPIOs or

bootstrapping. The different selections may be used for

different operating modes (full function, partial function, partial

power-down), regional standards (US, Japan, Europe) or

system production margin testing.

The device may be configured to use one of two I2C

addresses to allow multiple devices to be used in a system.

Pin Assignment

Features

• Generates up to two independent output frequencies

• High performance, low phase noise PLL, <0.7 ps RMS

typical phase jitter on outputs:

– PCIe Gen1, 2, 3 compliant clock capability

– USB 3.0 compliant clock capability

– 1 GbE and 10 GbE

• Two fractional output dividers (FODs)

• Independent Spread Spectrum capability on each output

pair

• Four banks of internal non-volatile in-system

programmable or factory programmable OTP memory

• I2C serial programming interface

• One reference LVCMOS output clock

• Two universal output pairs:

– Each configurable as one differential output pair or two

LVCMOS outputs

• I/O Standards:

– Single-ended I/Os: 1.8V to 3.3V LVCMOS

– Differential I/Os - LVPECL, LVDS and HCSL

• Input frequency ranges:

– LVCMOS Reference Clock Input (XIN/REF) – 1MHz

to 200MHz

– Crystal frequency range: 8MHz to 40MHz

• Output frequency ranges:

– LVCMOS Clock Outputs – 1MHz to 200MHz

– LVDS, LVPECL, HCSL Differential Clock Outputs –

1MHz to 350MHz

• Individually selectable output voltage (1.8V, 2.5V, 3.3V) for

each output pair

• Programmable loop bandwidth

• Programmable output to output skew

• Programmable slew rate control

• Programmable crystal load capacitance

• Individual output enable/disable

• Power-down mode

• 1.8V, 2.5V or 3.3V core VDDD, VDDA

• Available in 20-pin VFQFPN 3mm x 3mm package

• -40° to +85°C industrial temperature operation

1

6

20-pin VFQFPN

XOUT

OUT1

XIN/REF

OUT1B

VDDO1

VDDA

SD/OE

EPAD

2

3

4

5

7

8

910

11

12

13

14

15

16

17

18

19

20

GND

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