Ask
Login
0
4.3kviews
Draw the block diagram of logic unit and write function of each block.
written 5.3 years ago by gravatar for teamques10 teamques10 ★ 64k •   modified 2.3 years ago
mobile communication
ADD COMMENT EDIT
1 Answer
2
181views
written 5.2 years ago by gravatar for teamques10 teamques10 ★ 64k •   modified 5.2 years ago

enter image description here

  • The logical unit contains the main control circuitry for the cellphone unit. The logical unit consists of a CPU, RAM, ROM, I/O interface circuit and control logic. NAM (Number

  • Assignment Module) is a programmable read only memory (PROM).The NAM holds the Mobile Identification

  • Number (MIN) i.e. the telephone number of the mobile phone.

  • The serial data comes from the MTSO. The bit rate of this signal is 10kbps.The MTSO keeps a full control over all the cell phones using this serial data.

  • This signal controls the transmitting and receiving frequencies and transmitted power.

  • The MTSO checks the received signal strength at the mobile by observing the RSSI signal and adjust the transmitted power level. Control signals from control logic section are applied to transmitter and receiver section of mobile unit
ADD COMMENT EDIT
Please log in to add an answer.