參數(shù)資料
型號(hào)： 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(wú)繩電話控制器（帶手機(jī)LCD顯示和免提功能）)
中文描述： 10頻道無(wú)繩電話控制器）與液晶顯示器和手機(jī)免提功能（10通道無(wú)繩電話控制器（帶手機(jī)液晶顯示和免提功能）
文件頁(yè)數(shù)： 7/23頁(yè)
文件大?。?/td> 178K
代理商： EM92013
7
* 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
/DATI
I/O
I
Active
L
Function
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 handset’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.
Data output.
It sends the digital data such as ringing or paging command to the handset
unit. The base unit should invert this signal firstly before sending to
handset’s /DATI pin. The maximum data rate is 250Hz.
RF transmitter power control output.
The RF transmitter power can be controlled by /TXPWR pin. It goes low
when in in-use mode.
Beep function output.
The /BEEP pin generates the beep functions such as key tone, incoming
ring, paging and warning tone, etc. The frequencies of beep output is
976Hz or 488Hz.
Beep sound volume control output.
Two beep sound levels (loud, normal) are controlled by the BPVOL pin
automatically. When incoming ring and paging, the BPVOL works at
“l(fā)oud” mode (BPVOL=low), otherwise it works at “normal” mode
(BPVOL=high).
Ringer on/off switch input.
The beep function of incoming ring can be switched on or off. Set this pin
high to turn off the incoming ring signal of beep function, but other beep
functions, such as paging ring, keytone and warning tone, still work
normally.
In-use indicator.
High output when the handset and the base unit are being used.
Speaker phone indicator.
High output when the base unit speaker phone in operation or the base unit
in line hold mode.
Carrier detect input.
This pin senses the RF carrier of the air-link. It functions when the /
TXPWR=low which implies that air-link ready between handset and base
unit. If it detects no RF carrier (/CDI input high) for more than 32 seconds,
the base unit returns to standby automatically. In normal air-linked
condition, the external RF carrier detection circuit must set the /CDI pin
to low.
Charge detect input.
Low input to this pin in charging mode. In charging mode, system
alignment between handset and base unit will be performed. This process
will be performed every time the handset putting back to the charge cardle
and needs about 2 seconds to complete.
DTMF signal output.
In base unit dialing, the DTMF signal is generated as long as the key is
DATO
O
H
(P.P.)
/TXPWR
O
L
(O.D.)
/BEEP
O
L
(O.D.)
BPVOL
O
H
(P.P.)
RNGSW
I
-
INUSE
O
H
(P.P.)
O
(P.P.)
SPKLED
H
/CDI
I
L
/CHG
I
L
DTMF
O
H
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