3.5 Outputs
The Si5332 supports up to 12 differential output drivers. Each output can be independently configured as a differential pair or as dual
LVCMOS outputs. The 8-output and 12-output devices feature banks of outputs, with each bank sharing a common VDDO.
Table 3.1. Clock Outputs
Device/Package
Maximum Outputs
Si5332-GM1 (32-Pin)
6 Differential, 12 LVCMOS
Si5332-GM2 (40-Pin)
8 Differential, 16 LVCMOS
Si5332-GM3 (48-Pin)
12 Differential, 24 LVCMOS
The output stage is different for each of the three versions of Si5332.
• The 6-output device features individual VDDO pins for each clock output. Each clock output can be sourced from MultiSynth0,
MultiSynth1, the input reference clock, or one of the five INT dividers through the cross point MUX.
• The 8-output device includes four clock outputs with dedicated VDDO pins, each of which can be sourced from MultiSynth0,
MultiSynth1, the input reference clock, or one of the five INT dividers through the cross point MUX. The remaining four clock outputs
are divided into Bank A and Bank B. Each Bank of outputs can be sourced from MultiSynth0, MultiSynth1, the input reference clock,
or one of the five INT dividers through the cross point MUX. The outputs within each of the two Banks share a common VDDO pin.
• The 12-output device includes two clock outputs with dedicated VDDO pins, each of which can be sourced from MultiSynth0,
MultiSynth1, the input reference clock, or one of the five INT dividers through the cross point MUX. The remaining ten clock outputs
are divided into Bank A, Bank B, Bank C, and Bank D. Each Bank of outputs can be sourced from MultiSynth0, MultiSynth1, the
input reference clock, or one of the five INT dividers through the cross point MUX. The outputs within each of the four Banks share a
common VDDO pin.
Utilizing the reference clock enables a fan-out buffer function from an input clock source to any bank of outputs.
Individual output Integer output dividers (R) allow the generation of additional synchronous frequencies. These integer dividers are
configurable as divide by 1 (default) through 63.
3.5.1 Output Signal Format
The differential output swing and common mode voltage are compatible with a wide variety of signal formats including HCSL, LVDS and
LVPECL. In addition to supporting differential signals, any of the outputs can be configured as LVCMOS drivers, enabling the device to
support both differential and single-ended clock outputs. Output formats can be defined in ClockBuilder Pro or via the serial interface.
Si5332 Data Sheet • Functional Description
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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Rev. 1.3 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 16, 2021
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