UPD1723GF-013 View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD1723GF-013

PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LF TUNER (CAR AUDIO)

NEC => Renesas Technology 

µPD1723GF-013, µPD1723GF-213

PIN No.

18

19

20

SYMBOL

MONO/NR2

LOUD

AMS

PIN NAME

DESCRIPTION

OUTPUT

TYPE

Monaural

and noise

reduction

output

In the radio mode, this pin operates as the MONORAL

signal output pin and in the tape mode, this pin oper-

ates as the NOISE REDUCTION signal output pin.

• Radio mode

Each time the MONO key is pressed on the

FM and VF bands, the output is inverted. When the

device is set to the MONORAL state by MONO

key, the LCD panel “MONO” display lights and high

level is output from this pin.

On the MW and LW bands, this pin becomes low.

When the power is turned on, this pin becomes low.

• Tape mode

This pin is valid when the diode matrix ENNR2

CMOS

pushpull

switch to be described later is 1 (shorted by diode).

When NOISE REDUCTION NR2 is selected by press-

ing the

NR

key or NOISE REDUCTION

function key (selected by diode matrix), high level is

output. At this time, the LCD panel “NR2” display

lights.

In the radio monitor and DK ON modes, the "MONO"

display is inverted and the MONO/NR2 pin is made

MONO output by pressing the MONO key.

When the power is turned on, this pin becomes low.

LOUDNESS signal output pin.

In the radio, tape, and CD modes, the output is inverted

each time the LOUD key is pressed. When the

LOUD output LOUDNESS state is selected by LOUD key,

the LCD panel “LOUD” display lights and high level is

CMOS

pushpull

output from this pin.

When the power is turned on, this pin becomes low.

AMD signal

output

Tape mode AMS (AUTO MUSIC SEARCH) control signal

output pin.

Its output is inverted each timer the

is pressed.

AMS

key CMOS

pushpull

High level is output while the LCD panel “AMS” dis-

play is lit.

11

Share Link: