CY22150KFI Datasheet CY22150KFI | P1-P3

One-PLL General-Purpose Flash-Programmable

and 2-Wire Serially Programmable Clock Generato

CY22150

Cypress Semiconductor Corporation • 3901 North First Street • San Jose, CA 95134 • 408-943-2600

Document #: 38-07104 Rev. *F Revised August 11, 2004

Features

• Integrated phase-locked loop (PLL)

• Commercial and industrial operation

• Flash-programmable

• Field-programmable

• 2-wire serial programming interface

• Low-skew, low-jitter, high-accuracy outputs

• 3.3V operation with 2.5V output option

• 16-lead TSSOP

Benefits

• Internal PLL to generate six outputs up to 200 MHz. Able

to generate custom frequencies from an external

crystal or a driven source.

• Performance guaranteed for applications that require

an extended temperature range.

• Nonvolatile reprogrammable technology allows easy

customization, quick turnaround on design changes

and product performance enhancements, and better

inventory control. Parts can be reprogrammed up to 100

times, reducing inventory of custom parts and

providing an easy method for upgrading existing

designs.

• The CY22150 can be programmed at the package level.

In-house programming of samples and prototype

quantities is available using the CY3672 FTG Devel-

opment Kit. Production quantities are available through

Cypress’s value-added distribution partners or by

using third party programmers from BP Micro-

systems, HiLo Systems, and others.

• The CY22150 provides an industry-standard interface

for volatile, system-level customization of unique

frequencies and options. Serial programming and

reprogramming allows quick design changes and

product enhancements, eliminates inventory of old

design parts, and simplifies manufacturing.

• High performance suited for commercial, industrial,

networking, telecomm and other general-purpose

applications.

• Application compatibility in standard and low-power

systems.

• Industry-standard packaging saves on board space.

Logic Block Diagram

SPI

Control

VDDL

AVDD

VSS

AVSS

SDAT

SCLK

Serial

VSSL

VDD

XIN

XOUT

LCLK1

Divider

PLL

OSC.

LCLK3

VCO

LCLK2

LCKL4

CLK5

CLK6

Bank 1

Divider

Bank 2

Crosspoint

Switch

VSS

VSSL

SCLK

LCLK1

XIN

XOUT

VDD

SDAT

AVSS

LCLK3

LCLK2

CLK6

CLK5

AVDD

VDDL

LCLK4

Pin Configuration

Programming

Interface

Matrix

CY22150

Document #: 38-07104 Rev. *F Page 2 of 13

Frequency Calculation and Register Definitions

The CY22150 is an extremely flexible clock generator with four

basic variables that can be used to determine the final output

frequency. They are the input reference frequency (REF), the

internally calculated P and Q dividers, and the post divider,

which can be a fixed or calculated value. There are three basic

formulas for determining the final output frequency of a

CY22150-based design:

• CLK = ((REF * P)/Q)/Post Divider

• CLK = REF/Post Divider

•CLK = REF.

The basic PLL block diagram is shown in Figure 1. Each of the

six clock outputs on the CY22150 has a total of seven output

options available to it. There are six post divider options

available: /2 (two of these), /3, /4, /DIV1N and /DIV2N. DIV1N

and DIV2N are independently calculated and are applied to

individual output groups. The post divider options can be

applied to the calculated VCO frequency ((REF*P)/Q) or to the

REF directly.

In addition to the six post divider output options, the seventh

option bypasses the PLL and passes the REF directly to the

crosspoint switch matrix.

Note:

1. Float XOUT if XIN is driven by an external clock source.

Part Number Outputs Input Frequency Range Output Frequency Range Specifications

CY22150FC 6 8 MHz–30 MHz (external crystal)

1 MHz–133 MHz (driven clock)

80 kHz–200 MHz (3.3V)

80 KHz–166.6 MHz (2.5V)

Field programmable

Serially programmable

Commercial temperature

CY22150FI 6 8 MHz–30 MHz (external crystal)

1 MHz–133 MHz (driven clock)

80 kHz – 166.6 MHz (3.3V)

80 KHz – 150 MHz (2.5V)

Field programmable

Serially programmable

Industrial temperature

Pin Definitions

Pin Name Pin Number Pin Description

XIN 1 Reference Input. Driven by a crystal (8 MHz – 30 MHz) or external clock (1 MHz – 133 MHz).

Programmable input load capacitors allow for maximum flexibility in selecting a crystal,

regardless of manufacturer, process, performance, or quality.

VDD 2 3.3V voltage supply

AVDD 3 3.3V analog voltage supply

SDAT 4 Serial data input

AVSS 5 Analog ground

VSSL 6 LCLK ground

LCLK1 7 Configurable clock output 1 at V

DDL

level (3.3V or 2.5V)

LCLK2 8 Configurable clock output 2 at V

DDL

level (3.3V or 2.5V)

LCLK3 9 Configurable clock output 3 at V

DDL

level (3.3V or 2.5V)

SCLK 10 Serial clock input

VDDL 11 LCLK voltage supply (2.5V or 3.3V)

LCLK4 12 Configurable clock output 4 at V

DDL

level (3.3V or 2.5V)

VSS 13 Ground

CLK5 14 Configurable clock output 5 (3.3V)

CLK6 15 Configurable clock output 6 (3.3V)

XOUT

[1]

16 Reference output

CY22150

Document #: 38-07104 Rev. *F Page 3 of 13

Default Start-up Condition for the CY22150

The default (programmed) condition of the device is generally

set by the distributor who programs the device using a

customer-specific JEDEC file produced by CyClocksRT.

Parts shipped from the factory are blank and unprogrammed.

In this condition, all bits are set to 0, all outputs are

three-stated, and the crystal oscillator circuit is active.

While you can develop your own subroutine to program any or

all of the individual registers described in the following pages,

it may be easier to use CyClocksRT to produce the required

The serial interface address of the CY22150 is 69H. Should

there be a conflict with any other devices in your system, this

can also be changed using CyClocksRT.

Frequency Calculations and Register Defini-

tions Using the Serial Programming Interface

The CY22150 provides an industry standard serial interface

for volatile, in-system programming of unique frequencies and

options. Serial programming and reprogramming allows for

quick design changes and product enhancements, eliminates

inventory of old design parts, and simplifies manufacturing.

The Serial Programming Interface (SPI) provides volatile

programming, i.e., when the target system is powered down,

the CY22150 reverts to its pre-SPI state, as defined above

(programmed or unprogrammed). When the system is

powered back up again, the SPI registers will need to be

reconfigured again.

All programmable registers in the CY22150 are addressed

with eight bits and contain eight bits of data. The CY22150 is

a slave device with an address of 1101001 (69H).

Table 1 lists the SPI registers and their definitions. Specific

Reference Frequency

The REF can be a crystal or a driven frequency. For crystals,

the frequency range must be between 8 MHz and 30 MHz. For

a driven frequency, the frequency range must be between

1 MHz and 133 MHz.

Using a Crystal as the Reference Input

The input crystal oscillator of the CY22150 is an important

feature because of the flexibility it allows the user in selecting

a crystal as a REF source. The input oscillator has program-

mable gain, allowing for maximum compatibility with a

reference crystal, regardless of manufacturer, process, perfor-

mance and quality.

Programmable Crystal Input Oscillator Gain Settings

The Input crystal oscillator gain (XDRV) is controlled by two

bits in register 12H, and are set according to Table 2. The

parameters controlling the gain are the crystal frequency, the

internal crystal parasitic resistance (ESR, available from the

(Q+2)

VCO

(2(PB+4)+PO)

LCLK1

LCLK2

LCLK3

LCLK4

CLK5

CLK6

CLKSRC

Crosspoint

Switch Matrix

[44H]

[44H,45H]

[45H]

[45H,46H]

DIV2CLK

REF

PFD

Divider Bank 1

[45H]

DIV1SRC [OCH]

DIV2SRC [47H]

Divider Bank 2

DIV1N [OCH]

DIV2N [47H]

DIV1CLK

/DIV1N

[42H]

[40H], [41H], [42H]

/DIV2N

Qtotal

Ptotal

CLKOE [09H]

Figure 1. Basic Block Diagram of CY22150 PLL

P1-P3 P4-P6 P7-P9 P10-P12 P13-P13

CY22150KFI

Mfr. #:

Buy CY22150KFI

Manufacturer:

Cypress Semiconductor

Description:

Phase Locked Loops - PLL Flash/2-wire Clk Gen 1MHz-133MHz

Lifecycle:

New from this manufacturer.

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