Toshiba TC9314F Manual page 28

IF Counter
This is a 20 bit general-purpose intermediate frequency (IF) counter used for such purposes as counting the
FM or AM intermediate frequency during auto-tuning or detecting the auto-stop signal. The IF counter also has
a period measuring function for measuring the period of low-frequency pilot signals, for example.
When the general-purpose IF counter is not being used for counting, for example, the intermediate frequency,
it can be used as a timer.
The IF counter block consists of a 20 bit binary counter and a control port.
1. IF Counter Control Port, Data Port
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TC9314F
2003-07-03