參數(shù)資料
型號： EM92013
廠商： ELAN Microelctronics Corp .
英文描述： 10 Channel Cordless Phone Controller with Handset LCD Display and Handfree Function(10通道無繩電話控制器（帶手機LCD顯示和免提功能）)
中文描述： 10頻道無繩電話控制器）與液晶顯示器和手機免提功能（10通道無繩電話控制器（帶手機液晶顯示和免提功能）
文件頁數(shù)： 5/23頁
文件大?。?/td> 178K
代理商： EM92013
5
* This specification are subject to be changed without notice.
EM92012/EM92013
10-CHANNEL CORDLESS PHONE CONTROLLER WITH
HANDSET LCD DISPLAY AND HANDFREE FUNCTION
5.18.1998
Symbol
I/O
Active
Function
High input to this pin disable the backlight during ringing and paging in
order to save power from flashing backlight.
It should be grounded. The NC* must be pulled high with 100k
resistor.
Oscillator Input/Output.
A 4MHz crystal is required, two 10pF capacitors should be connected
from XIN and XOUT to ground respectively.
System reset input.
Low input to this pin resets the controller. The system reset can be done
when the first time power up or putting the handset on the charge cradle.
To reset the controller, a minimum of 10ms low pulse is required. If the
handset battery is to be changed, a low signal should be detected at ON/
OFF pin that forces the controller to enter sleep mode.
But the /RESET pin should be kept high with power back up circuit in
order to maintain the controller memory.
/RESET pin should be pulled high whereas in-use or standby mode to
conserve power.
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.
Charge detection input.
Low input indicates charging mode. It is used for system alignment when
the handset is placed back to the base 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.
Production alignment test input.
In normal operation, this pin must be left open. To enter to testing mode,
set this pin be high (please consult to the testing mode description for
more details).
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 figure 1.
A low signal sent to this pin will force the controller to start sampling the
received data.
EM32100 HKS pin control. Used to enable EM32100 LCD driver in
operation mode.
A pull-up resistor (~470k
) is required to EM32100 V
DD
.
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. The maximum data rate is 250Hz.
NC, NC*
-
-
XIN, XOUT
-
-
/RESET
I
L
(O.D.)
ON/OFF
I
-
/CHG
I
L
/PTEST
I
L
/DATI
I
L
/ENLCD
1
O
L
(O.D.)
DATO
O
H
(P.P.)
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