CY29972AI datasheet(4/8 Pages) CYPRESS

tên linh kiện	CY29972AI

Giải thích chi tiết về linh kiện	3.3V, 125-MHz Multi-Output Zero Delay Buffer

PDF	8 Pages

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nhà sản xuất	CYPRESS [Cypress Semiconductor]

Trang chủ	http://www.cypress.com

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CY29972

Document #: 38-07290 Rev. *C

Page 4 of 8

SYNC Output

In situations where output frequency relationships are not

integer multiples of each other, the SYNC output provides a

signal for system synchronization. The CY29972 monitors the

relationship between the QA and QC output clocks. It provides

a LOW-going pulse, one period in duration, one period prior to

the coincident rising edges of the QA and QC outputs. The

duration and placement of the pulse depend on the higher of

the QA and QC output frequencies. The following timing

diagram illustrates various waveforms for the SYNC output.

Note that the SYNC output is defined for all possible combina-

tions of QA and QC outputs, even though under some relation-

ships the lower frequency clock could be used as a synchro-

nizing signal.

SYNC

VCO

1:1 Mode

2:1 Mode

3:1 Mode

3:2 Mode

4:1 Mode

4:3 Mode

6:1 Mode

Figure 1. Timing Diagram

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