TCA is available worldwide. You can select any table configuration (TCA) using the GLOBAL variable. For example, TCA for regular content (tt_content) can be found inside
$ GLOBALS ['TCA'] ['tt_content']
TCA contains the entire table configuration, if you want to see all this, I suggest you simply print_r () the table configuration that you would like to see.
The configuration for each field inside the table is stored in
$ GLOBALS ['TCA'] ['TableName'] ['columns'] ['ColumnName']
If the TCA is not already loaded, you can load it manually with the following command:
t3lib_div :: loadTCA ('TABLENAME');
It will help you on your way.
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