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參數(shù)資料
| 型號(hào)： | EM94015 |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | Dual Channel Cordless Phone Controllers with Handset LCD Display(雙通道無(wú)繩電話控制器（帶手機(jī)LCD顯示）) |
| 中文描述： | 雙通道控制器無(wú)繩電話與手機(jī)液晶顯示器（雙通道無(wú)繩電話控制器（帶手機(jī)液晶顯示）） |
| 文件頁(yè)數(shù)： | 3/16頁(yè) |
| 文件大小： | 135K |
| 代理商： | EM94015 |
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3
* This specification are subject to be changed without notice.
1.30.1997
EM94014/EM94015
DUAL CHANNEL CORDLESS PHONE CONTROLLERS
WITH HANDSET LCD DISPLAY
Symbol
ON/OFF
I/O Active
I
Function
-
ON/OFF switch input.
Low input to this pin sets the controller in “sleep” mode for power saving purpose.
To ensure the system alignment works properly, it must be forced to high while
charging.
Data input.
The data sent from the sending-end where is inverted to the receiving-end, that it
means to receive the inverted signal sent from the base’s DATO pin.
To prevent IC malfunction from RF noise, a low pass filter (cut off freq. ~ 1kHz)
must be added, see Note 2.
A low signal sent to this pin will force the controller to start sampling the received
data.
Data output.
It sends the digital data of dialing and commands to the base unit. The base unit
should invert this signal firstly before sending to base’s /DATI pin.
RF transmitter power control output.
The RF transmitter power can be controlled by this pin. It outputs high signal to
RF transmitter in stand-by mode and sends low signal in in-use mode.
RF receiver power control output.
The RF receiver power is controlled by this pin at a ratio of 1:5 when the handset
is in stand-by mode.
Keyboard scanning input pins. Internal debounce time is 20ms. A logic “0” input
to these pins enable the controller start keyboard scanning and check which key
pressed.
R1 and R2 are also used to setup TEL, OFF or TEL/OFF key type and channel
number display option, repsectively.
Charge detection input.
Low input indicates charging mode. It is used for system alignment when the
handset is placed back to the charge cradle. It needs about 2 seconds for the
alignment. To ensure the system alignment works properly, the ON/OFF pin must
be forced to high while charging.
EM32100 HKS pin control. Used to enable EM32100 LCD driver in operation
mode.
A pull-up resistor (~470k
) is required to EM32100 V
.
Serial data sent to EM32100 for dialing no. channel no. display. When /ENLCD=low,
this pin sends a series of data to EM32100 LCD driver.
A pull-up resistor (~470k
) is required to EM32100 V
DD
.
Battery low detection input.
A low input to this pin when battery is low. If low is detected that INUSE pin
will indicate the Low battery condition with 60 ms ON, 2 sec off
High output to mute the speaker and microphone.
/DATI
I
L
DATO
O
H
(P.P.)
/TXEN
O
L
(O.D.)
/RXEN
O
(O.D.)
L
C1~C4
I
-
R1~R5
I/O
(P.P.)
-
/CHG
I
L
/ENLCD
1
O
L
(O.D.)
/SDO
1
O
L
(O.D.)
/BATL
I
L
MUTE
O
H
(O.D.)
O
(O.D.)
CH
To change the channels of air-link.
CH=low indicates CH=2 and CH=high indicates CH=1.
At the first time of power up or the handset is left from the charged cradle, CH=1.
(default channel)
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