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参数资料
| 型号： | D1723GF |
| 厂商： | NEC Corp. |
| 英文描述： | PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LF TUNER CAR AUDIO |
| 中文描述： | 锁相环频率合成器和控制器的调频/中波/低频调谐器汽车音响 |
| 文件页数： | 45/80页 |
| 文件大小： | 1590K |
| 代理商： | D1723GF |
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45
μ
PD1723GF-013,
μ
PD1723GF-213
Function
Symbol
Receiving band selection switch.
It is valid only in the radio mode.
Each time this switch is pressed, the band is switched sequentially as shown below.
→
FM1
→
FM2
→
FM3
→
MW1
→
MW2
→
LW
However, bands disabled by receiving area and DISFM3, ENMW2, and DISLW switches are
skipped.
When the band is switched (FM1
→
FM2
→
FM3
→
MW1
→
MW2) in the same band (FM,
MW), the band display and last channel change.
When the
key is pressed during VF band reception, the VF band is reset and
the device returns to the band received last.
In the radio mode, during frequency display, this key is used as the preset memory writable
state setting key and during clock display (CE pin = High level), this key is used with
the
and
keys as the clock adjustment key.
When the ME2S = 0, this key operates as the preset memory writable state and clock
adjustment key. When ME2S = 1, this key operates as the preset memory writable state and
clock adjustment key. When ME2S = 0, use the
key to switch the display.
This key operation is described below.
Radio mode frequency display
This key is used as the preset memory writable state setting key.
It is valid only when the initialize diode M2S switch is 0.
When this key is pressed, the device enters the preset memory writable state for 5 seconds
from the moment the key was pressed and the current receiving frequency is written to
the preset memory corresponding to the pressed key by pressing the
key. If the
key is pressed continuously at this time, the write
operation is not performed.
During the preset memory writable state, the “ch” display flashes at 1 Hz (duty 50 %). If
preset memory is being received, the preset memory number flashes also.
This key is invalid during the seek operation (including seek operation at scanning).
However, it is valid at 5 seconds hold during the preset memory scan and scan operations.
Each key operation in the preset memory writable state is shown below.
to
BAND
MAN UP
MAN DWN
DISP
M1
(TP1)
M6
ME
Key
Operation
M1
(TP1)
to
M6
BAND
The frequency being received when a key is pressed is written to the preset
memory corresponding to the pressed key.
Muting is not output.
ME
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