The ChorusTM Automotive SiT91288 is a low jitter, automotive grade clock generator engineered for automotive applications where reliability and environmental robustness are critical. It comes with a single clock domain, 4 configurable differential or 8 single-ended low skew outputs, and FailSafe™ technology that includes clock safety monitors and programmable alarms.
The SiT91288 integrates SiTime’s MEMS resonator, eliminating the need for an external oscillator or resonator. This integrated MEMS improves system reliability by eliminating traditional clock generators’ dependence on quartz and its associated issues like high failure rates and matching requirements.
The device is configurable in output frequency, driver type (differential/LVCMOS
) and individual Output Enables through the serial interface. Additional frequency plan flexibility is available using a PLL bypass feature. Internal monitoring features help improve system Functional Safety metrics by using the General Purpose I/O (GPIO) pins and device registers to report fault conditions to a safety manager MCU. The SiT91288 is compliant with PCIe Generation 1-6 including configurable spread-spectrum.
User-defined, pre-programmed and user-programmable Non-volatile memory (NVM) enables a high degree of flexibility. Configurable GPIO pins support state changes such as individual output enable.
The ChorusTM Automotive SiT91288 is a low jitter, automotive grade clock generator engineered for automotive applications where reliability and environmental robustness are critical. It comes with a single clock domain, 4 configurable differential or 8 single-ended low skew outputs, and FailSafe™ technology that includes clock safety monitors and programmable alarms.
The SiT91288 integrates SiTime’s MEMS resonator, eliminating the need for an external oscillator or resonator. This integrated MEMS improves system reliability by eliminating traditional clock generators’ dependence on quartz and its associated issues like high failure rates and matching requirements.
The device is configurable in output frequency, driver type (differential/LVCMOS) and individual Output Enables through the serial interface. Additional frequency plan flexibility is available using a PLL bypass feature. Internal monitoring features help improve system Functional Safety metrics by using the General Purpose I/O (GPIO) pins and device registers to report fault conditions to a safety manager MCU. The SiT91288 is compliant with PCIe Generation 1-6 including configurable spread-spectrum.
User-defined, pre-programmed and user-programmable Non-volatile memory (NVM) enables a high degree of flexibility. Configurable GPIO pins support state changes such as individual output enable.
