upd178016 Renesas Electronics Corporation., upd178016 Datasheet - Page 44

• Manufacturer Part Number: upd178016
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

44
MUTE pin
(b) All-station AF operation
MUTE pin
<3> If an RDS station with priority 1 cannot be received in <1> and <2> above, stations with priority 2 are
<4> The measured signal meter readings are sorted, starting from the greatest reading.
<5> IF and PI are checked in the order of the sorted signal meter readings, at IV, VII, and VIII.
<6> A station having priority 3 is checked in the same manner as a station having priority 2.
<7> It is assumed that the AF operation has been successful when PI is judged as being acceptable, after
Stations are sequentially received by turning mute on/off once, until a station for which reception is
satisfactory is found.
All the frequencies in the AF list are checked. If a station for which reception is satisfactory cannot be found,
it is assumed that AF operation has failed, and the AF operation is completed.
Example
(a) <1> through <6> in the example of single-station AF operation are successively performed.
<7> It is assumed that the AF operation has been successful, and the AF operation is completed when PI
Single-station AF starts
All-station AF starts
received at III, IV, and V, and the signal meter reading of each station is measured.
If no station having priority 2 is found, and if the signal meter reading unacceptable in <3>, <6> is
performed. If the signal meter reading is acceptable in <3>, the operation is completed when the AF
operation next fails. Subsequently, <6> is performed by the next AF operation.
which the AF operation is completed.
is judged as being acceptable.
Where one station has priority 1, three stations have priority 2, and two stations have priority 3
(see Figure 3-4)
I
I
II
II
Figure 3-3. Single-Station AF Operation
Figure 3-4. All-Station AF Operation
III
III
IV
IV
V
VI
V
VII
VI
VIII
VII
All-station AF completed
VIII
Single-station AF completed
PD178016GC-051