PD178016GC-051_15 Datasheet, PDF (12/96 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER WITH BUILT-IN PRESCALER, PLL FREQUENCY SYNTHESIZER, AND IF COUNTER FOR AUTOMOTIVE FM/MW/LW RADIO APPLICATIONS

µPD178016GC-051
Pin No. Symbol
Pin name
Description
I/O type
20
MUTE
Mute signal output Audio mute signal output pin.
CMOS
The output of this pin is active low.
push-pull
This pin is used to eliminate the shock noise generated when the output
PLL is out of lock in radio mode, and to switch the mode pin output.
21
GNDPORT Ground pin for port Ground pin for port. Connect this pin to GND.
—
22
VDD PORT Positive power supply Positive power supply pin for port.
—
pin for port
Connect this pin to VDD.
23
LOCAL Local signal output Output pin for the tuner LOCAL/DX switching output.
CMOS
The output of this pin is high while the device is in LOCAL mode. push-pull
output
24
BAND0 Band switching signal Band switching signal output pins.
25
BAND1 output
These pins output the following signals in each band.
Band
BAND0 pin
BAND1 pin
CMOS
push-pull
output
MW
0
0
LW
0
1
FM
1
0
(0: Low, 1: High)
The FM band is output when power is first applied.
26
AGCC
AGCC signal output Output pin for the auto gain control cut signal.
The signal is output during auto-tuning.
CMOS
push-pull
output
27
LPFSEL LPF time constant Output pin for the signal for switching the time constant of the LPF CMOS
switching signal
of the tuner during AF operation.
push-pull
output
The output level of this pin goes high during AF operation.
output
28
AMIFC
AM intermediate
frequency input
Input pin for intermediate frequency (IF) in the AM (MW, LW) band.
To protect the built-in AC amplifier, use a capacitor to prevent the
flow of direct current.
When the AM SD/IF switch of the initial setting diode matrix is set
to 1 (the diode is jumpered), this pin is used to detect a station
during auto-tuning.
When the input frequency range and the conditions listed below are
satisfied, the device judges that a station has been detected.
Input
Band
MW
LW
Input frequency range
450 kHz ± 3 kHz
459 kHz ± 3 kHz
450 kHz ± 3 kHz
459 kHz ± 3 kHz
A frequency within the input frequency range must be input within
20 ms of the PLL being locked.
10