This section introduces the functional core of a channel, consisting of the following blocks:
The following illustration shows the counting or down counting functional core of the TSX CTY 2A or 4A modules.
The hardware or software counter enable function is a particular auxiliary function, intrinsically related to the counting or down counting functions. Indeed, without the counter enable, the counting or down counting functions cannot operate. For this reason, unlike the other auxiliary functions, the counter enable function is present in this section. The associated language objects are described in the
implicit objects part.
The counting only or down counting only functions only accept a single counting physical input, which is illustrated below (signal applied on the IA input ST_IA (%IWr.m.c.2.2)).
This table summarizes the input characteristics of the up/down counting function for each channel.
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Modules involved
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TSX CTY 2A / 4A
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Main physical input
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IA ST_IA (%IWr.m.c.2.0)
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Counting or down counting enable
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hardware: IVal ST_IENAB (%IWr.m.c.2.2) input, conditioned by the Enable software command,
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directly using the software (Direct enable command).
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