Clocks

SmartFusion2 devices have two on-chip RC oscillators and up to two crystal oscillators for generating clocks for the on-chip resources and logic in the FPGA fabric, as listed in the following table.

RC Oscillators:

Crystal Oscillators:

All IGLOO2 devices and the M2S050 SmartFusion2 device have a main crystal oscillator. They do not have an auxiliary (RTC) crystal oscillator.

Table 1. Clock Circuit

Resource

SmartFusion2 SoC Part Number

IGLOO2 Part Number

M2S005

M2S010

M2S025

M2S050

M2S150

M2GL005

M2GL010

M2GL025

M2GL050

M2GL150

RC Oscillators

2

2

2

2

2

2

2

2

2

2

On-Chip Oscillators

Crystal Oscillators

2

2

2

1

2

1

1

1

1

1

Parent topic: Design Considerations