CY25566

Application Schematic

In this example, the CY25566 is being driven by a 75-MHz reference clock.

S0 = 0 and S1 = 0 are programmed to select a BW of 2.5%. (Refer to Table 1 and 2.)

S2 = 0 and S3 = 1 are programmed to select the Group 2 range.

VDD = 3.30 VDC.

SSCLK1a = 75 MHz @ 2.5% center spread modulation. SSCLK1b = 75 MHz @ 2.5% center spread modulation. SSCLK 2 = 37.5 MHz @ 2.5% center spread modulation. REFOUT = 37.5 MHz non-modulated clock.

VDD

 

 

 

 

 

0.1 uF

 

 

 

 

 

75 MHz Clock source 1

 

4

 

 

 

XIN/CLKIN

VDD

 

 

 

 

 

3

 

 

 

 

REFOUT

REFOUT

 

 

 

 

16

XOUT

 

 

 

 

 

 

 

 

 

 

 

 

SSCLK2

15

SSCLK2

 

 

 

 

2

CY25566

 

 

REFOFF

 

 

8

 

VDD

 

 

 

 

 

SSCLK1a

SSCLK1a

 

 

 

10

SSCC

 

 

 

 

 

 

 

 

 

7

S3

 

 

 

 

6

 

 

9

 

S2

 

SSCLK1b

SSCLK1b

12

 

 

S1

 

 

 

 

13

S0 VSS

VSS

VSS

 

 

 

5

11

14

 

 

Figure 4. Application Schematic

Document #: 38-07429 Rev. *B

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Cypress CY25566 manual Application Schematic