upd178016 Renesas Electronics Corporation., upd178016 Datasheet - Page 45

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

(4) Judgment of PI code
(c) AF timing
(a) Judgment of PI code when REGION mode is off
(b) Judgment of PI code when REGION mode is on
(c) AF operation for station in different REGION
LPFSEL
The frequencies in the AF list are received at the following timings.
<1>
<2>
<3>
<4>
<5>
<6>
<7>
<8>
<9>
<10> PI decode two times wait time (800 ms MAX.)
When 16 bits coincide, the station is judged as being the same.
When 12 bits of the PI code, except the area cover code, coincide, the station is judged as being the same.
If, however, the area cover code is 0 to 2, the station is judged as being the same when 16 bits coincide.
For the UK market, however, 8 bits are used for judgment (the area cover code and the last 4 bits are not
used).
The following processing is performed so that a station in a different REGION is not easily selected during
AF operation.
<1> The signal meter reading at which the existence of a station is judged is changed between a station
<2> The value at which the signal meter for a station in a different REGION is judged is set to 5 V (0FFH)
<3> Each time the AF operation fails, the value at which the signal meter for a station in a different REGION
MUTE
AGCC
whose REGION coincides (or is unknown) and a station whose REGION is different, where the signal
meter reading of the AF operation is judged.
when the tunable frequency is changed.
is judged is decreased by 0.3125 V (10H). The minimum value is the voltage input to the SMT_B/C
pin, or +0.3125 V.
Preceding mute time (3 ms)
PLL set time
Lock wait time (40 ms MAX.)
SD stabilization wait time (1 ms)
Signal meter reading measurement time
IF stabilization wait time (5 ms)
IF measurement time (4 ms, 40 ms MAX.)
Following mute time (3 ms) (Mute is cleared if initial setting diode NO_PIM is jumpered.)
PI decode once wait time (400 ms MAX.)
H
H
H
L
L
L
<1>
<2>
<3>
<4>
<5>
<6>
<7>
<8>
<9>
PD178016GC-051
<10>
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