参数资料
型号: ICS307M-02
元件分类: 时钟产生/分配
英文描述: 200 MHz, OTHER CLOCK GENERATOR, PDSO16
封装: 0.150 INCH, SOIC-16
文件页数: 3/9页
文件大小: 196K
代理商: ICS307M-02
SERIALLY PROGRAMMABLE CLOCK SOURCE
MDS 307-01/02 G
3
Revision 031606
In te gr ated Circuit Systems 525 Ra ce Street, San Jose, CA 9512 6 tel (4 08) 297 -1 201 www.icst.com
ICS307-01/02
Determining the Output Frequency
On power-up, the ICS307-01 on-chip registers can
have random values so almost any frequency may be
output from the part. CLK1 will always have some clock
signal present, but CLK2 could possibly be OFF (low).
The ICS307-02 on-chip registers are initially configured
to provide a x1 output clock on both the CLK1 and
CLK2 outputs. The output frequency will be the same
as the input clock or crystal. This is useful if the ICS307
will provide the initial system clock at power-up. Since
this feature is an advantage in most systems, the
ICS307-02 is recommended for new designs.
With programming, the user has full control in changing
the desired output frequency to any value over the
range shown in Table 1 on page 4. The output of the
ICS307 can be determined by the following equation:
Where:
VCO Divider Word (VDW) = 4 to 511 (0, 1, 2, 3
are not permitted)
Reference Divider Word (RDW) = 1 to 127 (0 is
not permitted)
Output Divider = values on page 4
The following operating ranges should be observed.
For the commercial temperature range:
And for the industrial temperature range:
To determine the best combination of VCO, reference,
and output dividers, see the online calculator at
contact ICS by sending an e-mail to ics-mk@icst.com
with the desired input crystal or clock and the desired
output frequency.
CLK1Frequency
InputFrequency 2
VDW 8
+
RDW 2
+
() OD
-------------------------------------------
=
55MHz InputFrequency 2 VDW 8
+
RDW 2
+
------------------------ 400MHz
<
<
200kHz
InputFrequency
RDW 2
+
----------------------------------------------
<
60MHz InputFrequency 2 VDW 8
+
RDW 2
+
------------------------ 360MHz
<
<
200kHz Input Frequency
RDW 2
+
-------------------------------------------
<
相关PDF资料
PDF描述
ICS308RI 200 MHz, OTHER CLOCK GENERATOR, PDSO20
ICS308R-T 200 MHz, OTHER CLOCK GENERATOR, PDSO20
ICS308R 200 MHz, OTHER CLOCK GENERATOR, PDSO20
ICS309R 200 MHz, OTHER CLOCK GENERATOR, PDSO20
ICS309RI 200 MHz, OTHER CLOCK GENERATOR, PDSO20
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