Si5332-AM1/2/3 Automotive Grade Device Reference Manual
The Si5332-AM1/2/3 is a high-performance, low-jitter clock generator capable of synthe-sizing five independent banks of user-programmable clock frequencies up to 333.33MHz, while providing up to 12 differential or 24 single-ended output clocks. The Si5332supports free run operation using an external crystal as well as lock to an external clocksignal. The output drivers are configurable to support common signal formats, such asLVPECL, LVDS, HCSL, and LVCMOS. Separate output supply pins allow supply voltag-es of 3.3 V, 2.5 V, 1.8 V and 1.5 V (CMOS only) to power the multi-format output drivers.The core voltage supply (VDD) accepts 3.3 V, 2.5 V, or 1.8 V and is independent fromthe output supplies (VDDOs). Using its two-stage synthesis architecture and patentedhigh-resolution Multisynth technology, the Si5332 can generate three fully independent/non-harmonically-related bank frequencies from a single input frequency.In addition to clock generation, the input clocks can bypass the synthesis stage, enabling the Si5332 to be used as a high-performanceclock buffer or a combination of a buffer and a generator. The Multisynth dividers have two sets of divide ratio registers, an A set and aB set. The active in-use divide ratio can be switched between the A set or B set via external input pin or register control. This featureallows for dynamic frequency shifting at ppb accuracy for applications such as frequency margining. Similar A set and B set dividerratios are available for the integer dividers, but the ratios must be integer related. CBPro supports the configuration and use of A and Bdivider sets. Spread spectrum is available for any clock output sourced from the Multisynth dividers and is available for use in EMI-sensitive applications, such as PCI Express. The 2-wire I2C bus can be used to control and configure the Si5332. Alternatively, somedevice features can be controlled by an external pin via CBPro configuration of one of more General Purpose I/O (GPIO) pins. Exam-ples of GPIO pin assigned control are clock input selection, frequency A/B select, spread spectrum enable, output enable, or I2C ad-dress select.
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Si5332 、 Si5332-8A-EVB 、 Si5332-6A-EVB 、 Si5332-AM1 、 Si5332-AM2 、 Si5332-AM3 |
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User's Guide |
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Please see the document for details |
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QFN |
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English Chinese Chinese and English Japanese |
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September 20, 2019 |
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Rev. 0.1 |
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2 MB |
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