PROGRAMMER datasheet(6/15 Pages) CYPRESS

No de pièce	Programmer

Description	Programmable Spread Spectrum Clock Generator for EMI Reduction

PDF	15 Pages

Scroll/Zoom	100%

Fabricant	CYPRESS [Cypress Semiconductor]

Site Internet	http://www.cypress.com

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6 / 15 page

CY25200

Document Number: 38-07633 Rev. *H

Page 6 of 15

Spread Percentage (SSCLK1 to SSCLK6 Outputs)

The SSCLK frequency is programmed to a percentage value

from ±0.25% to ±2.5% for center spread and from –0.5% to

–5.0% down spread. The granularity is 0.25%.

Modulation Frequency

The default modulation frequency is 31.5 kHz. Other modulation

frequencies available via the configuration software are 30.1 kHz

and 32.9 kHz.

Figure 3. Using Clock Select, CLKSEL Control Pin Configuration Pinout

Table 4. Using Clock Select, CLKSEL Control Pin

Input Frequency

(MHz)

CLKSEL

(Pin 4)

SSCLK1

(Pin 7)

SSCLK2

(Pin 8)

SSCLK3

(Pin 9)

SSCLK4

(Pin 12)

REFOUT

(Pin 14)

REFOUT

(Pin 15)

14.318

CLKSEL = 0

33.33

14.318

CLKSEL = 1

66.66

14.318

VSS

VSSL

SSON

33.33/66.66 MHz

14.318 MHz

XOUT

VDD

CLKSEL

AVSS

33.33/66.66 MHz

REFOUT(14.318 MHz)

REFOUT(14.318MHz)

AVDD

VDDL

33.33/66.66 MHz

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