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AD9520-2/PCBZ 数据表(PDF) 72 Page - Analog Devices

部件名 AD9520-2/PCBZ
功能描述  12 LVPECL/24 CMOS Output Clock Generator with Integrated 2.2 GHz VCO
PDF  84 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD9520-2/PCBZ 数据表(HTML) 72 Page - Analog Devices

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AD9520-2
Rev. 0 | Page 72 of 84
Reg.
Addr
(Hex) Bit(s) Name
Description
[5]
[4]
[3]
[2]
[1]
[0]
Level or
Dynamic
Signal
Signal at LD Pin
1
1
0
0
1
0
DYN
REF2 clock (not available in differential mode).
1
1
0
0
1
1
DYN
Selected reference to PLL (differential reference when in
differential mode).
1
1
0
1
0
0
DYN
Unselected reference to PLL (not available when in differential
mode).
1
1
0
1
0
1
LVL
Status of selected reference (status of differential reference);
active low.
1
1
0
1
1
0
LVL
Status of unselected reference (not available in differential
mode); active low.
1
1
0
1
1
1
LVL
Status of REF1 frequency (active low).
1
1
1
0
0
0
LVL
Status of REF2 frequency (active low).
1
1
1
0
0
1
LVL
(Status of REF1 frequency) AND (status of REF2 frequency).
1
1
1
0
1
0
LVL
(DLD) AND (Status of selected reference) AND (status of VCO).
1
1
1
0
1
1
LVL
Status of VCO frequency (active low).
1
1
1
1
0
0
LVL
Selected reference (low = REF2, high = REF1).
1
1
1
1
0
1
LVL
DLD; active low.
1
1
1
1
1
0
LVL
Holdover active (active low).
1
1
1
1
1
1
LVL
N/A, do not use.
01B
[7]
Enable VCO
frequency
monitor
Enables or disables VCO frequency monitor.
[7] = 0; disable the VCO frequency monitor (default).
[7] = 1; enable the VCO frequency monitor.
01B
[6]
Enable REF2
(REFIN)
frequency
monitor
Enables or disables the REF2 frequency monitor.
[6] = 0; disable the REF2 frequency monitor (default).
[6] = 1; enable the REF2 frequency monitor.
01B
[5]
Enable REF1
(REFIN)
frequency
monitor
REF1 (REFIN) frequency monitor enabled; this is for both REF1 (single-ended) and REFIN (differential) inputs
(as selected by differential reference mode).
[5] = 0; disable the REF1 (REFIN) frequency monitor (default).
[5] = 1; enable the REF1 (REFIN) frequency monitor.
01B
[4:0]
REFMON pin
control
Selects the signal that is connected to the REFMON pin.
[4]
[3]
[2]
[1]
[0]
Level or
Dynamic
Signal
Signal at REFMON Pin
0
0
0
0
0
LVL
Ground, dc (default).
0
0
0
0
1
DYN
REF1 clock (differential reference when in differential mode).
0
0
0
1
0
DYN
REF2 clock (N/A in differential mode).
0
0
0
1
1
DYN
Selected reference to PLL (differential reference when in differential
mode).
0
0
1
0
0
DYN
Unselected reference to PLL (not available in differential mode).
0
0
1
0
1
LVL
Status of selected reference (status of differential reference);
active high.
0
0
1
1
0
LVL
Status of unselected reference (not available in differential mode);
active high.
0
0
1
1
1
LVL
Status REF1 frequency (active high).
0
1
0
0
0
LVL
Status REF2 frequency (active high).
0
1
0
0
1
LVL
(Status REF1 frequency) AND (status REF2 frequency).
0
1
0
1
0
LVL
(DLD) AND (status of selected reference) AND (status of VCO).
0
1
0
1
1
LVL
Status of VCO frequency (active high).
0
1
1
0
0
LVL
Selected reference (low = REF1, high = REF2).
0
1
1
0
1
LVL
DLD; active low.



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