3.2.8.1 Clock Generator

The clock sources of choice for the communication peripherals are MEMS oscillators.

The DSC1001 is a silicon MEMS-based CMOS oscillator offering excellent jitter and stability performance over a wide range of supply voltages and temperatures.

The DSC6000 family of MEMS oscillators combines industry-leading low power consumption with ultra-small packages.

Each communication interface uses its own source oscillator:

  • One DSC1001DI5-025.0000 (25 MHz) oscillator used for the Ethernet dual switch
  • One DSC1001DI5-025.0000 (25 MHz) oscillator used for the Ethernet HSIC interface
  • One DSC1001DI5-025.0000 (25 MHz) oscillator used for the EtherCAT interface
  • One DSC1001CI5-024.0000 (24 MHz) oscillator used for the USB hub chip
  • One DSC6011JI1A-012.0000 oscillator used for the J-Link-OB (12 MHz)
  • One DSC1001DL5-012.0000 oscillator used for the SAMA5D27 main clock (12 MHz)