The 'tick' system was meant to allow the firmware to monitor the low level state of the line, beyong just "not aligned", but it was never really useful in the present state. Now we have more tick source available (but only one can be measured at the same time). More specifically, the firmware can monitor the presence/absence of raw pulses (LOS condition), it can also monitor the number of '1' pulses to detect an AIS signals, or simply the rate of RX pulses (to tune the local oscillator to incoming signal rate). Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Change-Id: I31fa8a717a26643f1b6ca5644bee1d8c41a2512e |
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build@87481ca25e | ||
common | ||
cores | ||
doc | ||
e1-tracer | ||
icE1usb | ||
icE1usb-proto | ||
README.md |
README.md
E1 related gateware
This directory contains the iCE40 gateware for various boards hosted in this repository.
Licensing
Most of the cores/HDL in here is licensed under one of the CERN OHL 2.0
license. See the doc/
subdirectory for the full license texts and refer
to each file header to know the license applicable to each file.
Some files have been imported from other projects with compatible licenses. Refer to each file header for the proper copyright and license information.
The repository also includes submodules which have their own licensing and copyright terms.