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參數(shù)資料
| 型號： | CY2292 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Three-PLL General-Purpose EPROM Programmable Clock Generator |
| 中文描述： | 三鎖相環(huán)通用EPROM的可編程時(shí)鐘發(fā)生器 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大小： | 189K |
| 代理商： | CY2292 |
CY2292
Document #: 38-07449 Rev. *B
Page 3 of 11
Power-Saving Features
The SHUTDOWN/OE input three-states the outputs when
pulled LOW. If system shutdown is enabled, a LOW on this pin
also shuts off the PLLs, counters, the reference oscillator, and
all other active components. The resulting current on the V
DD
pins will be less than 50
μ
A (for commercial temperature or
100
μ
A for industrial temperature). After leaving shutdown
mode, the PLLs will have to relock. All outputs have a weak
pull-down so that the outputs do not float when three-stated.
[4]
The S2/SUSPEND input can be configured to shut down a
customizable set of outputs and/or PLLs, when LOW. All PLLs
and any of the outputs can be shut off in nearly any combi-
nation. The only limitation is that if a PLL is shut off, all outputs
derived from it must also be shut off. Suspending a PLL shuts
off all associated logic, while suspending an output simply
forces a three-state condition.
[3]
The CPUCLK can slew (transition) smoothly between 20 MHz
and the maximum output frequency (100 MHz at 5V/80 MHz
at 3.3V for Commercial Temp. parts or 90 MHz at 5V/66.6 MHz
at 3.3V for Industrial Temp. and for field-programmed parts).
This feature is extremely useful in “Green” PC and laptop
applications, where reducing the frequency of operation can
result in considerable power savings. This feature meets all
486 and Pentium
processor slewing requirements.
CyClocks Software
CyClocks
is an easy-to-use application that allows you to
configure any one of the EPROM-programmable clocks
offered by Cypress. You may specify the input frequency, PLL
and output frequencies, and different functional options.
Please note the output frequency ranges in this data sheet
when specifying them in CyClocks to ensure that you stay
within the limits. CyClocks also has a power calculation feature
that allows you to see the power consumption of your specific
configuration. You can download a copy of CyClocks for free
on Cypress’s web site at www.cypress.com.
Cypress FTG Programmer
The Cypress Frequency Timing Generator (FTG) Programmer
is a portable programmer designed to custom program our
family of EPROM Field Programmable Clock Devices. The
FTG programmers connect to a PC serial port and allow users
of CyClocks software to quickly and easily program any of the
CY2291F, CY2292F, CY2071AF, and CY2907F devices. The
ordering code for the Cypress FTG Programmer is CY3670.
Custom Configuration Request Procedure
The CY229x are EPROM-programmable devices that may be
configured in the factory or in the field by a Cypress Field Appli-
cation Engineer (FAE). The output frequencies requested will
be matched as closely as the internal PLL divider and multi-
plier options allow. All custom requests must be submitted to
your local Cypress FAE or sales representative. The method
to use to request custom configurations is:
Use CyClocks software. This software automatically calcu-
lates the output frequencies that can be generated by the
CY229x devices and provides a print-out of final pinout which
can be submitted (in electronic or print format) to your local
FAE or sales representative. The CyClocks software is
available free of charge from the Cypress web site
(http://www.cypress.com) or from your local sales represen-
tative.
Once the custom request has been processed you will receive
a part number with a 3-digit extension (e.g., CY2292SC-128)
specific to the frequencies and pinout of your device. This will
be the part number used for samples requests and production
orders.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY2292_05 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Three-PLL General-Purpose EPROM Programmable Clock Generator |
| CY2292ASI-002 | 制造商:Cypress Semiconductor 功能描述:Electronic Component |
| CY2292ASI-016 | 制造商:Cypress Semiconductor 功能描述: |
| CY2292ASI-016T | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Cypress Semiconductor 功能描述: |
| CY2292ASI-020T | 制造商:Cypress Semiconductor 功能描述: |
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