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MC13109A Datasheet(PDF) 18 Page - Motorola, Inc |
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MC13109A Datasheet(HTML) 18 Page - Motorola, Inc |
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18 / 28 page  MC13109A 18 MOTOROLA RF/IF DEVICE DATA 0 0 1 1 0 1 0 1 1 25 4 4 1 4 25 4 LO2 Out Tx Reference Frequency Figure 13. Reference Register Programming Mode 12–b Programmable Reference Counter ÷ 25 ÷1 ÷ 4 LO2 In Rx Reference Frequency U.K. Base U.K. Handset U.K. Handset U.K. Base U.K. Handset Select U.K. Base Select LO2 Tx Divider Value Rx Divider Value Application All but U.K. and Netherlands U.K. Baseset U.K. Handset Netherlands Base and Handset U.K. Handset Select MSB LSB 12–Bit Reference Counter U.K. Base Select 14–Bit Reference Counter Latch Figure 14. Control Register Bits MSB LSB 4–Bit Volume Control ALC Disable Not Used Limiter Disable Clk Disable MPU Clk1 MPU Clk0 Stdby Mode Rx Mode Tx Mute Rx Mute SP Mute Figure 15. Mute and Disable Control Bit Descriptions ALC Disable 1 0 Automatic Level Control Disabled Normal Operation Limiter Disable 1 0 Limiter Disabled Normal Operation Clock Disable 1 0 MPU Clock Output Disabled Normal Operation Tx Mute 1 0 Transmit Channel Muted Normal Operation Rx Mute 1 0 Receive Channel Muted Normal Operation SP Mute 1 0 Speaker Amp Muted Normal Operation Power Saving Operating Modes When the MC13109A is used in a handset, it is important to conserve power in order to prolong battery life. There are five modes of operation; Active, Rx, Standby, Interrupt and Inactive. In Active Mode, all circuit blocks are powered. In Rx mode, all circuitry is powered down except for those circuit sections needed to receive a transmission from the base. In the Standby and Interrupt Modes, all circuitry is powered down except for the circuitry needed to provide the clock output for the microprocessor. In Inactive Mode, all circuitry is powered down except the MPU interface. Latch memory is maintained in all modes. Figure 16 shows the control register bit values for selection of each power saving mode and Figure 17 show the circuit blocks which are powered in each of these operating mode. Figure 16. Power Saving Mode Selection Stdby Mode Bit Rx Mode Bit “CD Out/Hardware Interrupt” Pin Power Saving Mode 0 0 X Active 0 1 X Rx 1 0 X Standby 1 1 1 or High Impedance Inactive 1 1 0 Inactive |
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Similar Description - MC13109A |
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