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TRF2432 Datasheet(PDF) 10 Page - Texas Instruments |
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TRF2432 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 23 page www.ti.com MODES OF OPERATION Power Modes Active Mode −Tx or RX on depending on TR setting −VCOs on −PA on if PAEN=HIGH and TR=HIGH − Can calibrate Rx DC I&Q offset if TR=LOW Idle Mode Standby Mode + − RF/IF VCOs on Standby Mode − Crystal oscilator on − REFOUT buffer on at crystal frequency only. − All registers active − SERIAL port is active. PE= PE= Serial CMD Power Off Vcc=0V Sleep Mode & PE=LOW Serial CMD Serial CMD Power On TRF2432 SLWS177A – APRIL 2005 – REVISED DECEMBER 2005 Table 3. Serial Register Definitions (continued) NAME SYMBOL # OF DEFAULTS(1) DESCRIPTION BITS Fractional N IF synthesizer FN_IF 1 0 FN_IF =1 enables the fractional N IF synthesizer when in idle or active mode. FN = 0 sets the IF synthesizer to a fixed frequency (374 MHz with 44 MHz crystal) for low power consumption. TX output buffer high power TX_HP 1 0 TX_HP = 1 puts IF amplifier in high linearity mode. TX_HP = 0 puts the IF amplifier into normal linearity mode to save current. This does not change linearity of the RFFE. Figure 2. Power Modes 10 |
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