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頻道無繩電話控制器）與液晶顯示器和手機(jī)免提功能（10通道無繩電話控制器（帶手機(jī)液晶顯示和免提功能）
文件頁(yè)數(shù)： 6/23頁(yè)
文件大?。?/td> 178K
代理商： EM92013
* This specification are subject to be changed without notice.
EM92012/EM92013
10-CHANNEL CORDLESS PHONE CONTROLLER WITH
HANDSET LCD DISPLAY AND HANDFREE FUNCTION
6
5.18.1998
Base Unit (EM92013)
Symbol
V
DD
,V
SS
I/O
-
Active
-
Function
Power supply.
Supply voltage ranges from 2.4V to 5.5V DC. V
is always grounded.
Recommend a 0.1uF decouple capacitor connected between its V
DD
and
V
.
Oscillator input/output.
A 4MHz crystal connection required. Two 10pf capacitors are connected
to XIN, XOUT for oscillation respectively.
System reset input.
High input to this pin for normal operation, and low input to this pin to
reset the controller. The system reset can be done at the first power up
or putting the handset on the charge cradle. The minimun reset pulse
width is 10ms. If the base power is to be removed, a low signal should
be detected at /PWDN pin that forces chip enter sleep mode.
But the /RESET pin should be kept high with power back up circuit in
order to maintain the controller memory.
It must be pulled high whereas in-use or standby mode to conserve
power.
keyboard matrix column.
Column input of key matrix, with 20ms internal debounce.
C1 and C2 are also used to select the flash time.
Keyboard matrix row.
Row input of key matrix, with 20ms internal debounce. The R1-R3 and
R5 are also used to select the T/P, M/B, PPS and production test
respectively.
Channel select output.
It outputs 4-bit BCD code from 0001 to 1010 to control the external PLL
such as EM92600A/C series for 46/49MHz or 45/48MHz band to work
in one of 10 channels.
Transmission mute output.
The /TXMUT outputs a low signal to compressor for transmission
muting. It can also be connected to expandor for expansion muting
simultaneously.
XIN, XOUT
-
-
/RESET
I
L
(O.D.)
C1-C4
I/O
(P.P.)
-
R1-R5
I/O
(P.P.)
-
D0-D3
O
H
(P.P.)
/TXMUT
O
L
(O.D.)
Symbol
I/O
Active
Function
/SDO
1
O
L
Serial Data Output pin (use with EM32100).
When /ENLCD=low, this pin sends a series of data to EM32100 LCD
driver for information display ( e.g. channel number, digit dialing ,
memory checking, etc. )
A pull-up resistor (~470k
) is required to EM32100 V
.
Power supply. Supply voltage ranges from 2.4V to 5.5V DC. Recom-
mend a 0.1uF decouple capacitor is connected between its V
DD
and
V
.
This pin is reserved for IC fabrication test purpose. It must be connected
to V
SS
.
(O.D.)
V
DD
,V
SS
-
-
TEST
I
-
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