PD17012GF-058_15 Datasheet, PDF (12/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
Pin
Symbol
No.
Pin name
Description
I/O type
21
LOC
Local signal
Local signal output pin in radio mode
CMOS
output
The operation depends on the mode, as described below:
push-pull
(1) In radio mode, radio-monitor tape mode, radio-monitor CD
output
mode
The LOC output goes high only in auto-tuning in the local state.
The level of the LOC output depends on both the tuning state
and LOCAL/DX state. The relationships are listed below:
Auto-tuning state
In progress
Not performed
LOCAL/DX state
LOCAL
DX
Don’t care
LOC output level
High
Low
Low
(2) In other modes
The output goes low.
22
AMUTE Audio mute
output
Output pin of the tape or CD mute signal
The operation depends on the mode, as described below:
(1) In radio mode, radio-monitor tape mode, radio-monitor CD
mode, power-off mode
The output goes low.
(2) In CD mode and tape mode
The output goes high.
See Chapter 7 for details.
CMOS
push-pull
output
23 RDMUTE Radio mute
output
Output pin of radio mute signal
The operation depends on the mode, as described below:
(1) In radio mode, radio-monitor tape mode, radio-monitor CD
mode; at radio-on, radio-off; at band switching; at switch-
ing of the frequency to be received
The output goes low.
(2) In CD mode and tape mode
The output method can be selected by setting the initial setting
diode MUTESEL. (See Section 2.6.1.) If the radio-monitor
function is used, set MUTESEL to 0 and bring the output low.
See Chapter 7 for details.
CMOS
push-pull
output
24
XOUT
Crystal
Pin for connecting a crystal
-
25
XIN
A 4.5-MHz crystal is connected.
Input
26
GND
Ground
Ground pin
-
58
Connect pins No. 26 and No. 58 to an identical potential.
27 ALARMOUT Alarm-out
output
Alarm-out output pin
See Chapter 3 for details.
CMOS
push-pull
output
28
KEYS2 Key source
Output pin for the key source signal for the momentary key matrix. N-ch open-
|
|
signal output
drain output
30
KEYS0
31
LOUD Loudness output Output pin for the loudness control signal
When the loudness state is set, the output goes high.
CMOS
push-pull
output
10