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MUTE Output
This is a 1 bit CMOS-format output-only port for muting control.
1. MUTE Port
Access the MUTE port by executing the OUT1 instruction with the operand [C
output is used for muting control. At such times as switching bands using the I/O port 1 input, the MUTE
bit can be set to "1".
When using the I/O port 1 input to switch bands (using a slide switch, for example), this function
prevents linear circuit switching noise. This control is based on I/O bit values.
The POL bit sets the MUTE output logic.
The mute output can also control muting using the phase difference output. A pulse is output to indicate
when the PLL is not locked. By connecting an external low-pass filter to the MUTE output, the output can
be used as a MUTE output. Use the UNLOCK bit to perform selection.
59
TC9314F
= 8H]. The MUTE
N
2003-07-03
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