PD17012GF-058_15 Datasheet, PDF (22/94 Pages) Renesas Technology Corp – PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LW TUNER (AUTOMOBILE APPLICATION)

µPD17012GF-058
Initial setting
diode
Description
AUTOLOC This switch specifies the local function, as follows:
CKHLT
AUTOLOC
Local function
0
Either or DX mode is selected according to a key entry (no auto local function avail-
able).
Each time the MONO/LOC key is pressed, switching occurs between local and DX
modes.
The local output is high in the local mode during auto-tuning (seek, scan, or auto-store).
1
The auto local function is performed (if available).
The MONO/LOC key becomes ineffective.
Keeping the SEEK UP , SCAN UP , SCAN DWN or P.SCAN key for at least 2
seconds triggers auto-tuning, turns on the “LOC” display, and makes the local output
high. After one cycle of auto-tuning is completed, a search begins in DX mode (with the
“LOC” display off and local output at a low level).
In modes other than auto-tuning , the “LOC” display is off and the local output is low. If
a key for the same operation (for example, the SEEK UP key during seek operation) is
pressed in local mode during auto-tuning, a search begins in DX mode at the same
frequency used when auto-tuning began. If the key is pressed in DX mode, auto-tuning
stops, and the frequency that was selected when auto-tuning began is reselected.
The same operation as above occurs when the AUTO500 is set to 1 (by keeping the
MAN UP or MAN DWN key pressed for at least 0.5 seconds).
(1: Shorted by the diode; 0: Open)
When the DISALARM and NOCLK initial setting diodes = 1, and CE = low, the CKHLT switch specifies
which standby mode is to be used, STOP or HALT.
CKHLT
0
1
CE = low
STOP mode
HALT mode
CLKDISP
(1: Shorted by the diode; 0: Open)
This switch specifies the clock display system (12/24) as follows:
CLKDISP
0
Clock display system
12-hour system
AM12 : 00
PM11 : 59
AM11 : 59
PM12 : 00
1
24-hour system
0 : 00
23 : 59
(1: Shorted by the diode; 0: Open)
DISALARM This switch specifies whether the alarm function is used, as follows:
DISALARM Description
0
Used
1
Not used
(1: Shorted by the diode; 0: Open)
20