CY22381_08 Datasheet, PDF (1/9 Pages) Cypress Semiconductor – Three-PLL General Purpose FLASH Programmable Clock Generator

CY22381
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
■ 3.3V operation
■ Eight-pin SOIC package
■ CyClocks RT™ support
Benefits
■ Generates up to three unique frequencies on three outputs up
to 200 MHz from an external source. Functional upgrade for
current CY2081 family.
■ Allows for 0 ppm frequency generation and frequency
conversion under the most demanding applications
Logic Block Diagram
■ Improves frequency accuracy over temperature, age, process,
and initial offset
■ Non-volatile programming enables easy customization,
ultra-fast turnaround, performance tweaking, design timing
margin testing, inventory control, lower part count, and more
secure product supply. Can also be programmed multiple times
which reduces programming errors and provides an easy
upgrade path for existing designs
■ In-house programming of samples and prototype quantities is
available using the CY3672 FTG development Kit. Production
quantities are available through Cypress’s value-added
distribution partners or by using third party programmers from
BP Microsystems, HiLo Systems, and others.
■ Performance suitable for high-end multimedia,
communications, industrial, A/D converters, and consumer
applications
■ Supports numerous low-power application schemes and
reduces EMI by allowing unused outputs to be turned off
■ Adjust crystal drive strength for compatibility with virtually all
crystals
■ External frequency select option for PLL1, CLKA, and CLKB
■ Industry standard supply voltage
■ Industry standard packaging saves on board space
■ Easy-to-use software support for design entry
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 #: 38-07012 Rev. *E
• San Jose, CA 95134-1709 • 408-943-2600
Revised October 10, 2008
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