Cypress CY3679 Quick Start Manual

• Remove CY3679 Evaluation Kit contents from
the box
• Kit Contents: CY3679 Evaluation Board, USB
Standard-A to Mini-B cable, power cables for
external supply and jumper shunts
• Use the frequency select switch (SW2) shown above
to choose the desired profile
• The profiles are pre-loaded in the internal flash of
the clock device
• The frequency configurations for each profile are as
shown in Table 1
OUT11 OUT12
Pro le Sel
FS[2:0] (SW2)
LVPECL LVDS
000 50 MHz 50 MHz
001 100 MHz 100 MHz
010 25 MHz 25 MHz
011 33.33 MHz 66.66 MHz
Note: For LVPECL, HCSL and LVCMOS outputs, (J44.1 & J44.2) and (J45.1 & J45.2) MUST be shorted
While evaluating LVDS and CML outputs, (J44.1 & J44.2) and (J45.1 & J45.2) MUST be open
QUICK START GUIDE
CY3679 EVALUATION KIT
Table 1: Frequency pro le selection table with default settings
OUT13 OUT14
HCSL CML
100 MHz 100 MHz 32.768 KHz 33.33 MHz 156.25 MHz 156.25 MHz 156.25 MHz 156.25 MHz 133.33 MHz 33.33 MHz
50 MHz 50 MHz
25 MHz 25 MHz
133.33 MHz 133.33 MHz
1
• Download and install the latest kit software from
www.cypress.com/go/CY3679
• Connect the kit to your computer using the USB
cable provided
• LED1 and LED2 are turned ON
3
• Connect OUT11 or any output you wish to evaluate
to the oscilloscope using an SMA cable
OUT15 OUT16 OUT21
LVCMOS LVCMOS LVPECL
25 MHz 33.33 MHz 155.52 MHz 155.52 MHz
24 MHz 48 MHz 77.76 MHz
24 MHz 48 MHz 38.88 MHz
OUT22 OUT23 OUT24
LVDS HCSL CML
77.76 MHz 77.76 MHz
77.76 MHz 77.76 MHz 77.76 MHz
38.88 MHz 24 MHz 24 MHz
2
4
OUT25 OUT26
LVCMOS LVCMOS
25 MHz 10 MHz
10 MHz 25 MHz
48 MHz 48 MHz