Cypress CY3679 Manual de inicio rápido
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• 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
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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