CY22180FSXI Datasheet CY22180FSXC, CY22180FSXI, CY22180FSXIT | P1-P3

CY22180

Very Low Jitter Field and Factory Programmable

Clock Generator

Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600

Document #: 001-15577 Rev. *A Revised January 13, 2009

Features

■ Low period and cycle-to-cycle jitter

❐ Typical pk-pk period jitter: 60 ps

■ Wide output frequency range

❐ Commercial temperature: 20–200 MHz

❐ Industrial temperature: 20–166 MHz

■ Input frequency range

❐ External crystal: 10–30 MHz fundamental crystal

❐ External reference: 10–133 MHz clock

■ Integrated phase-locked loop (PLL)

■ Field programmable and factory programmed options

■ Programmable crystal load capacitor tuning array

■ 3.3V operation

■ Commercial and industrial temperature ranges

■ Power down or output enable function

Benefits

■ Internal PLL generates up to 200 MHz output. Can generate

custom frequencies from an external crystal or a driven source.

■ In-house programming of samples and prototype quantities

can be done using the CY3672-USB programmer and CY3619

socket adapter. Production quantities are available through

Cypress’s value added distribution partners or by using third

party programmers from BP Microsystems, HiLo Systems, and

others.

■ Eliminates the need for expensive and difficult to use

higher-order crystals.

■ Enables fine-tuning of output clock frequency by adjusting

Load

of the crystal. Eliminates the need for external C

Load

capacitors.

■ Application compatibility in standard and low-power systems

■ Enables low-power state or output clocks to High-Z state

PLL

PROGRAMMABLE

CONFIGURATION

OUTPUT

DIVIDER

2 4

VDD VSS

CLKOUT

REFOUT

XOUT

XIN/CLKIN

PD# or OE

XOUT

CXIN

Logic Block Diagram

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CY22180

Document #: 001-15577 Rev. *A Page 2 of 9

Pinouts

Figure 1. CY22180 - 8-Pin SOIC

General Description

The CY22180 is a low jitter clock generator for use in networking,

telecommunication, datacom, consumer electronics, and other

general purpose applications. The CY22180 offers a single

programmable output and an optional copy of the input

frequency. The on-chip reference oscillator is designed to run off

a 10–30 MHz crystal, or a 10–133 MHz external clock signal. The

output frequency range is 20–200 MHz. The CY22180 comes in

an 8-pin SOIC, and requires a 3.3V power supply.

Programming Description

Field Programmable (CY22180FSXC and

CY22180FSXI)

The CY22180 is programmed at the package level, that is, in a

programmer socket. The CY22180 is flash technology based, so

the parts can be reprogrammed up to 100 times. This enables

fast and easy design changes and product updates, and elimi-

nates any issues with old and out-of-date inventory.

Samples and small prototype quantities can be programmed on

the CY3672 programmer with the CY3619 socket adapter.

CyberClocks™ Online Software

CyberClocks Online Software is a web-based software appli-

cation that allows the user to custom-configure the CY22180. All

the parameters in Table 1 on page 3 given as “Enter Data” can

be programmed into the CY22180. CyberClocks Online outputs

an industry-standard JEDEC file used for programming the

CY22180. CyberClocks Online is available at

www.cyberclocksonline.com through user registration. For more

information on the registration process refer to the CY3672 data

sheet.

CY3672-USB Programming Kit and CY3619 Socket

Adapter

The Cypress CY3672 FTG programmer and CY3619 socket

adapter are needed to program the CY22180. The socket

adapter comes with small prototype quantities of CY22180. The

CY3619 can be ordered separately, so existing users of the

CY3672-USB programmer need order only the socket adapters

to program the CY22180.

Pin Definitions

Pin Name Description

1 XIN/CLKIN Crystal input or reference clock input.

2 VDD 3.3V power supply.

3 PD#/OE Power down pin, active LOW. If PD# = 0, the PLL and oscillator are powered down and

outputs are weakly pulled low.

Output enable pin, active HIGH. If OE = 1, CLKOUT and REFOUT are enabled. User has

the option of choosing either PD# or OE function.

4 VSS Power supply ground.

5 REFOUT Buffered reference output.

6 CLKOUT Low jitter clock output.

7 NC No connect. Leave this pin floating.

8 XOUT Crystal output. Leave this pin floating if external clock is used.

8XIN/CLKIN

REFOUT

CLKOUT

XOUT1

VDD

PD#/OE

VSS

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CY22180

Document #: 001-15577 Rev. *A Page 3 of 9

Factory Programmed CY22180

Factory programming is available for volume manufacturing by

Cypress. All requests must be submitted to the local Cypress

Field Application Engineer (FAE) or sales representative. Once

the request has been processed, you receive a new part number

(dash number) and samples with the programmed values. This

part number is used for additional sample requests and

production orders.

Additional information on the CY22180 can be obtained from the

Cypress website at www.cypress.com.

Product Functions

Input Frequency (XIN, pin 1 and XOUT,

pin 8)

The input to the CY22180 can be a crystal or a clock. The input

frequency range for crystals is 10 to 30 MHz, and for clock

signals is 10 to 133 MHz.

XIN

and C

XOUT

(pin 1 and pin 8)

The internal load capacitors at pin 1 (C

XIN

) and pin 8 (C

XOUT

)

can be programmed from 12 pF to 60 pF in 0.5 pF increments.

Thus, these programmable capacitors support crystals with C

values between 6 pF and 30 pF. The crystal C

value, minus

board parasitic capacitance, is the value entered into Cyber-

Clocks Online Software.

If using a driven reference, CyberClocks Online Software sets

XIN

and

XOUT

to the minimum value 12 pF.

Output Clock (CLKOUT, pin 6)

The output clock can be programmed to any frequency in the

range of 20–200 MHz.

Reference Output (REFOUT, pin 5)

The reference clock output has the same frequency as the input

clock. This output can be programmed to be enabled (clock on)

or disabled (High-Z, clock off) through CyberClocks Online

software. If this output is not needed, Cypress recommends that

users request the disabled (High-Z, Clock Off) option.

Power Down or Output Enable (PD# or OE, pin 3)

The CY22180 can be programmed to include either PD# or OE

function. PD# function can be used to power down the oscillator

and PLL. The OE function disables the outputs but does not turn

off the PLL. PD# achieves lower power consumption, but PLL

start up time means that turn-on time is slower than for OE.

Table 1. Pin Function

Pin Function Input Frequency

Total Xtal Load

Capacitance

Output Frequency

Reference

Output

Power down or Output

Enable

Pin Name XIN and XOUT XIN and XOUT CLKOUT REFOUT PD#/OE

Pin# 1 and 8 1 and 8 6 5 3

Unit MHz pF MHz On or Off Select PD# or OE

Program Value ENTER DATA ENTER DATA ENTER DATA ENTER DATA ENTER DATA

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CY22180FSXI

Mfr. #:

Buy CY22180FSXI

Manufacturer:

Cypress Semiconductor

Description:

Phase Locked Loops - PLL Lo Jitter Clock Gen 10MHz-133MHz

Lifecycle:

New from this manufacturer.

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CY22180FSXI

CY22180FSXI

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