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CY223811

Three-PLL General Purpose Flash Programmable Clock Generator



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CY223811 pdf
CY22381
CY223811
Three-PLL General Purpose
Flash Programmable Clock Generator
Three-PLL General Purpose Flash Programmable Clock Generator
Features
Three integrated phase-locked loops
Ultra-wide divide counters (eight-bit Q, eleven-bit P, and
seven-bit post divide)
Improved linear crystal load capacitors
Flash programmability
Field programmability
Low-jitter, high-accuracy outputs
Power-management options (Shutdown, OE, Suspend)
Configurable crystal drive strength
Frequency select option through external LVTTL Input
3.3 V operation
8-pin small outline integrated circuit (SOIC) package
(CY22381)
8-pin SOIC package with NiPdAu lead finish (CY223811)
CyClocks RT™ support
Functional Description
The CY22381 is the next-generation programmable Flash
programmable clock for use in networking, telecommunication,
datacom, and other general-purpose applications. The CY22381
offers up to three configurable outputs in a 8-pin SOIC, running
off a 3.3 V power supply. The on-chip reference oscillator is
designed to run off an 8–30-MHz crystal, or a 1–166-MHz
external clock signal. The CY22381 has a three PLLs driving 3
programmable output clocks. The output clocks are derived from
the PLL or the reference frequency (REF). Output post dividers
are available for either. The CY223811 is the CY22381 with
NiPdAu lead finish.
For a complete list of related documentation, click here.
Logic Block Diagram
XTALIN
XTALOUT
OSC.
CONFIGURATION
FLASH
SHUTDOWN/OE
FS/SUSPEND
PLL1
11-BIT P
8-BIT Q
PLL2
11-BIT P
8-BIT Q
PLL3
11-BIT P
8-BIT Q
4×3
Crosspoint
Switch
Divider
7-BIT
Divider
7-BIT
Divider
7-BIT
CLKC
CLKB
CLKA
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 38-07012 Rev. *K
• San Jose, CA 95134-1709 • 408-943-2600
Revised November 21, 2014



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CY223811 pdf
CY22381
CY223811
Contents
Pinouts .............................................................................. 3
Pin Definitions .................................................................. 3
Operation ........................................................................... 3
Configurable PLLs ....................................................... 3
General-Purpose Input ................................................ 3
Crystal Input ................................................................ 3
Crystal Drive Level and Power .................................... 4
Output Configuration ................................................... 4
Power-Saving Features ............................................... 4
Improving Jitter ............................................................ 4
CyClocks RT Software ..................................................... 4
Maximum Ratings ............................................................. 5
Operating Conditions ....................................................... 5
Electrical Characteristics ................................................. 5
Recommended Crystal Specifications ........................... 6
Test Circuit ........................................................................ 6
Switching Characteristics ................................................ 7
Switching Waveforms ...................................................... 8
Ordering Information ........................................................ 9
Possible Configurations ............................................... 9
Ordering Code Definitions ......................................... 10
Package Drawing and Dimensions ............................... 11
Acronyms ........................................................................ 12
Document Conventions ................................................. 12
Units of Measure ....................................................... 12
Document History Page ................................................. 13
Sales, Solutions, and Legal Information ...................... 14
Worldwide Sales and Design Support ....................... 14
Products .................................................................... 14
PSoC® Solutions ...................................................... 14
Cypress Developer Community ................................. 14
Technical Support ..................................................... 14
Document Number: 38-07012 Rev. *K
Page 2 of 14



Part Number CY223811
Description Three-PLL General Purpose Flash Programmable Clock Generator
Maker Cypress Semiconductor - Cypress Semiconductor
Total Page 14 Pages
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