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* This specification are subject to be changed without notice.
EM92100/EM92101
10-CHANNEL AUTO SCAN CORDLESS PHONE CONTROLLER WITH LCD DISPLAY
1.5.1998
Preliminary
GENERAL DESCRIPTION
EM92100/EM92101 is a set of 4-bit micro-controller specially designed for 10-channel Auto-Scan cordless
phone. It consists of all operational features of existing cordless phone. Both of the handset unit and base unit with
LCD display. RTC (real time clock), dialing number, channel number and check memory function.
FEATURES
Watch dog timer function.
BASE unit with 16 digits LCD display. (Date, Real time clock, conversation time, dialing number, function flag)
Handset unit with 12 digits LCD display. (Real time clock, conversation time, dialing number, function flag)
Base unit with receiver when no power supply, Base unit still can be used.
Check last conversation and reset STW function.
RF Module provided.
10 different channels changeable with parallel PLL EM92600 series interface.
16 bits random security code.
Handset and Base set security code programmable.
Handset unit RF power saving control enter slow mode work at 32768 Hz crystal to reduce 4 bit micro
controller power consumption.
Individual keypad for handset and base unit.
Base unit speakerphone function.
Auto on / auto standby function.
Handset turn on by any key while ring incoming.
Line holding and call transferring.
Carrier sense. (auto turn off after 20 seconds and warning beep every 5 seconds while talking ; beep tone only
provided by Handset.
Handset keypad backlighted.
Two ways paging and intercoming (direct intercom from handset to base).
Battery low detection and indication.
Testing mode by key for production alignment. (Voice and data DTMF, carrier detection indicator
modulation test for each CH, Tx and Rx path test.
Changeable receiving sound volume (normal or loud) by soft key at handset unit.
Selectable Tone/Pulse, M/B ratio ; 10 PPS provided only.
Selectable flash time, 600ms, and 100ms R-option.
3.6 seconds pause key and tone mode soft key change.
Built-in DTMF generator.
Two 32-digit redial buffers (one in Handset and one in Base).
3 sets of direct memory (32 digits) and 10 sets of indirect memory (16 digits) on each units.
One key redial function.
Standby state key in, normal state auto dial out function provided.
Standby state check memory, normal state auto dial out function.
Standby state redial content check function (last 10 sets). Normal state auto dialout function.
Handset unit charge ID code transmit to Base set or not, selectable.
CHK key function, used to check channel number, LNB, memory, etc.