SM803020 Datasheet, PDF (5/14 Pages) Micrel Semiconductor – Flexible Ultra-Low Jitter Clock Synthesizer

Micrel, Inc.
Pin Number
B19, B32
A25
A26
A24
Pin Name
NC
VCXO_OUT
VCXO_IN
VC
Pin Type
O, SE
I, SE
I
Pin Level Pin Function
VCXO output, 8 to 10pF, programmable
VCXO input, 8 to 10pF, programmable
Control voltage for VCXO, positive slope
SM803020
Truth Tables
PLL_BYPASS
0
1
−
−
−
−
−
−
XTAL_SEL
−
−
0
1
−
−
−
−
OEA
1
1
1
1
0
1
1
1
FSEL
1
0
Output Frequency (MHz)
Primary
Secondary
OEB
1
1
1
1
1
0
1
1
OEC
1
1
1
1
1
1
0
1
OED
1
1
1
1
1
1
1
0
Input
−
−
REF_IN
XTAL
−
−
−
−
Output
PLL
XTAL/REF_IN
−
−
QA Tri-state
QB Tri-state
QC Tri-state
QD Tri-state
Output Logic Programming
Available output logic types are LVPECL (default), LVDS,
HCSL and LVCMOS.
Each output can be programmed individually to any of the
four logic types through SPI.
Unused outputs can be disabled to high impedance.
All logic types are differential except LVCMOS. LVCMOS
signals are single ended coming out of the Qx pins. During
LVCMOS operation the /Qx pins are disabled.
July 22, 2013
5
Revision 1.0
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