upd178016 Renesas Electronics Corporation., upd178016 Datasheet - Page 10

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

10
Pin No.
20
21
22
23
24
25
26
27
28
MUTE
GNDPORT Ground pin for port
V
LOCAL
BAND0
BAND1
AGCC
LPFSEL
AMIFC
Symbol
DD
PORT Positive power supply Positive power supply pin for port.
Mute signal output
pin for port
Local signal output
Band switching signal Band switching signal output pins.
output
AGCC signal output
LPF time constant
switching signal
output
AM intermediate
frequency input
Pin name
The output of this pin is active low.
This pin is used to eliminate the shock noise generated when the
PLL is out of lock in radio mode, and to switch the mode pin output.
Connect this pin to V
The output of this pin is high while the device is in LOCAL mode.
These pins output the following signals in each band.
The FM band is output when power is first applied.
Output pin for the auto gain control cut signal.
The signal is output during auto-tuning.
Output pin for the signal for switching the time constant of the LPF
of the tuner during AF operation.
The output level of this pin goes high during AF operation.
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.
A frequency within the input frequency range must be input within
20 ms of the PLL being locked.
Audio mute signal output pin.
Ground pin for port. Connect this pin to GND.
Output pin for the tuner LOCAL/DX switching output.
MW
LW
FM
MW
LW
Band
Band
DD
450 kHz
459 kHz
450 kHz
459 kHz
.
BAND0 pin
Description
Input frequency range
3 kHz
3 kHz
3 kHz
3 kHz
0
0
1
(0: Low, 1: High)
BAND1 pin
0
1
0
PD178016GC-051
push-pull
CMOS
push-pull
output
CMOS
push-pull
output
CMOS
push-pull
output
CMOS
push-pull
output
Input
CMOS
output
I/O type
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