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manual: fix TTL class reference

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Sebastien Bourdeauducq 2019-04-20 00:17:10 +08:00
parent 56033b60a7
commit deffb77a7e
1 changed files with 1 additions and 1 deletions

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@ -106,7 +106,7 @@ In its :meth:`~artiq.language.environment.Experiment.build` method, the experime
In ARTIQ, TTL is used roughly synonymous with "a single generic digital signal" and does not refer to a specific signaling standard or voltage/current levels. In ARTIQ, TTL is used roughly synonymous with "a single generic digital signal" and does not refer to a specific signaling standard or voltage/current levels.
When :meth:`~artiq.language.environment.Experiment.run`, the experiment first ensures that ``ttl0`` is in output mode and actively driving the device it is connected to. When :meth:`~artiq.language.environment.Experiment.run`, the experiment first ensures that ``ttl0`` is in output mode and actively driving the device it is connected to.
Bidirectional TTL channels (i.e. :class:`~artiq.devices.ttl.TTLInOut`) are in input (high impedance) mode by default, output-only TTL channels (:class:`~artiq.devices.ttl.TTLOut`) are always in output mode. Bidirectional TTL channels (i.e. :class:`~artiq.coredevice.ttl.TTLInOut`) are in input (high impedance) mode by default, output-only TTL channels (:class:`~artiq.coredevice.ttl.TTLOut`) are always in output mode.
There are no input-only TTL channels. There are no input-only TTL channels.
The experiment then drives one million 2 µs long pulses separated by 2 µs each. The experiment then drives one million 2 µs long pulses separated by 2 µs each.