D1723GF datasheet(21/80 Pages) NEC

21 / 80 page

µPD1723GF-013, µPD1723GF-213

Symbol

Function

Local function setting switch.

Its settings are shown below.

Local Function

AUTOLOC

LOCAL ON/OFF by key input.

Each time the

key pressed, the “LOC” display is inverted.

LOCAL output outputs high level only during autotuning (SEEK, SCAN, AMEMO).

Auto local.

The

key is invalid.

When autotuning is selected by

keys, the “LOC” display lights and the LOCAL

output becomes high and autotuning is performed.

When autotuning is performed for one cycle, the device searches in the DX mode

(“LOC” display OFF, LOCAL output = Low).

However, the device enters the LOCAL1, LOCAL2 or DX mode only during auto

memory operation.

At other than autotuning, the “LOC” display goes off and the LOCAL output

becomes low.

If the same key (

key for the seek-up operation, etc.) is pressed

during autotuning, if the device is in the LOCAL mode, it searches in the DX mode,

beginning from the frequency at which autotuning started. If the device is in the DX

mode, autotuning stops.

When AUTO500 switch is set to “1” (autotuning by pressing

key for 0.5 second) when auto local is used, the following opera-

tions are performed:

Auto local search (LOCAL) mode is performed by pressing the

key for more than 0.5 seconds.

When the

key is pressed again during LOCAL

search and the 2nd DX search, autotuning stops.

LOC

SEEK DWN

SEEK UP

AMEMO

SEEK DWN

SEEK UP

MAN DWN

MAN UP

MAN DWN

MAN UP

AUTOLOC

SEEK UP

MAN UP

D1723GF Datasheet(PDF) 21 Page - NEC

D1723GF Datasheet(HTML) 21 Page - NEC

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