Atmel ATR4262M1 - Manual (Page 3)

3
4994BS–AUDR–05/08
ATR4262M1 [Preliminary]
20 AFCC AFC control input/SW6 switching output/lock detect/AFHOLD
21 VRVCO Reference voltage VCO
22 VCOB VCO resonator (base)
23 VCOE VCO resonator (emitter)
24 GNDVCO VCO ground
25 VCOBUF VCO buffer output/input
26 GNDPLL PLL ground
27 VTUNE Tuning voltage output
28 FMLF PLL loopfilter FM
29 AMLF PLL loopfilter AM
30 VRPLL Reference voltage digital
31 REF2 RefClockInput2/crystal oscillator
32 REF1 RefClockInput1/crystal oscillator
33 VSPLL Supply voltage digital input
34 IFOUT2 IF output 2
35 IFOUT1 IF output 1
36 SW3 SW3 switching output/lock detect/AFSAMPLE
37 AMAGCTC2 RF AGC AM time constant 2
38 IFIN3 IF amplifier input
39 VRT Reference voltage tuner
40 IFIN2 IF amplifier input
41 IFREF IF reference voltage
42 IFIN1 IF amplifier input
43 VST Supply voltage tuner
44 FMOUT2 FM mixer output
45 FMOUT1 FM mixer output
46 AMAGCTC1 RF AGC AM time constant 1
47 AMOUT2 AM mixer output/FM Mixer Output 4
48 AMOUT1 AM mixer output/FM Mixer Output 3
Die pad GNDT_PAD Tuner RF and IF Ground
Table 2-1. Pin Description
Pin Symbol Function