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It is, in principle, possible to use an external clock to synchronize N3x0 devices in frequency, and then use a GPSDO for a coarse time synchronization. This use case is deliberately not supported, as the GPSDO PPS signal and the external clock signal are by definition not matched, which will remove any guarantees on time/phase alignment. Because there are certain, niche use cases where the lack of phase alignment is acceptable, but only an external clock is available (no shared external PPS), usage of GPS for generating a PPS signal may be fine. This patch does not enable the usage of this combination out of the box, but adds comments and an update to the manual to explain the risks of this combination, and how to enable it (by patching MPM). |
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| .. | ||
| __init__.py.in | ||
| base.py | ||
| CMakeLists.txt | ||
| common.py | ||
| e31x.py | ||
| e31x_periphs.py | ||
| e320.py | ||
| e320_periphs.py | ||
| n3xx.py | ||
| n3xx_periphs.py | ||
| sim.py | ||
| x4xx.py | ||
| x4xx_clk_aux.py | ||
| x4xx_clock_ctrl.py | ||
| x4xx_clock_lookup.py | ||
| x4xx_clock_mgr.py | ||
| x4xx_clock_policy.py | ||
| x4xx_clock_types.py | ||
| x4xx_dio_control.py | ||
| x4xx_gps_mgr.py | ||
| x4xx_mb_cpld.py | ||
| x4xx_periphs.py | ||
| x4xx_reference_pll.py | ||
| x4xx_rfdc_ctrl.py | ||
| x4xx_rfdc_regs.py | ||
| x4xx_sample_pll.py | ||
| x4xx_update_cpld.py | ||