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TDMA T2290/T2297:
Description
U1000 is a single-chip microcontroller that controls major functions of the cellular phone. U1000 will perform the functions of both
the master controller and keyboard processor. These functions include:
•
Keypad interrupt and scanning
•
Display driving
•
Control of audio and RF hardware
•
Call processing (signalli ng) software
- ON/OFF control
- EEPROM access
- Synthesizer programmin g
- Automatic Frequency Control(AFC)
- Transmit power setting
•
User Interface
U1000 is not packaged with internal memories as past Call processors. This m eans that vital in formation that was previously stored in the memory of previous call pro-
cessors is now stored in the external EEPROM(U1908).
Call Processor (U1000)
BLOCK DIAGRAM NOT NECESSARY
REFER TO PAGE B37
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