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MC44S803 Datasheet(PDF) 3 Page - Freescale Semiconductor, Inc |
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MC44S803 Datasheet(HTML) 3 Page - Freescale Semiconductor, Inc |
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3 / 36 page  Freescale Semiconductor 3 MC44S803 PIN DESCRIPTION Table 1 lists the pin out of the MC44S803. In addition to the 64 leads, there is a grounding pad on the bottom of the package, which is soldered to the PCB. Table 1. Pin Descriptions (Listed by Pin Number) Pin Number Signal Name Description 1 VCO1RegByp Bypass for VCO 1 Reg.,No Connect (Recommended) 2 VDD 3.3 Volt, VCO1 power supply, (Bypass caps should return to pin 64, VSSRBias) 3 VCO1Cap Bypass Cap for VCO 1 (Return cap to pin 64, VSSRBias) 4 VCO1LCRtn Return for VCO 1c Inductor 5 VCO1LC Inductor for VCO 1c 6 VCO1LBRtn Return for VCO 1b Inductor 7 VCO1LB Inductor for VCO 1b 8 VCO1LARtn Return for VCO 1a Inductor 9 VCO1LA Inductor for VCO 1a 10 TestP Test Pin Plus 11 TestM Test Pin Minus 12 VDD 3.3 Volt, SPI power supply 13 SClk Serial Clock 14 MISO_Adr2 MISO / Address bit 2. (Internal pull-up for “1”; Ground for “0”) 15 BusSel SPI/I2C Bus Select. (Internal pull- up for “1”; Ground for “0”) 16 SDA_MOSI SDA / MOSI 17 SS_Adr1 Slave Select / Address bit 1. (Internal pull-up for “1”; Ground for “0”) 18 VDD 3.3 Volt, OSC power supply 19 Xtal2 Crystal Input 2 20 Xtal1 Crystal Input 1 21 RefOutP Ref. Osc. Buffer In/Output Plus 22 RefOutM Ref. Osc. Buffer In/Output Minus 23 DigIFOM Digital IF Out Minus 24 DigIFOP Digital IF Out Plus 25 AnIFOP Analog IF Out Plus 26 AnIFOM Analog IF Out Minus 27 VDD 3.3 Volt, IF AGC power supply 28 IFAGCInM IF AGC Amplifier Input Minus (Internally cap coupled) 29 IFAGCInP IF AGC Amplifier Input Plus (Internally cap coupled) 30 AnTest Analog Test Pin 31 2ndIFAGC Second IF AGC Control. 32 VDD 3.3 Volt, Synth 2 power supply 33 LF2 Loop Filter 2 34 LF2Rtn VSSRefVCO2. Return for Loop Filter 2 35 VCO2RegByp Bypass for VCO 2 Reg., No Connect (Recommended) 36 VDD 3.3 Volt, VDDVCO2 power supply. (Bypass cap should return to pin 34 VSSRefVCO2) 37 VCO2Cap Bypass Cap for VCO 2. (Return cap to pin 34 VSSRefVCO2) 38 VCO2L1 Inductor for VCO 2 39 VCO2L2 Return for VCO 2 Inductor 40 VDD 3.3 Volt, IF AMP power supply 41 IFAmpOP IF Amplifier Output Plus 42 IFAmpOM IF Amplifier Output Minus 43 VSS VSS IF AMP 44 PreMix2InM Mixer 2 Preamp Input Minus 45 PreMix2InP Mixer 2 Preamp Input Plus 46 VDD 3.3 Volt, M2IF power supply 47 NC No Internal Connection 48 NC No Internal Connection 49 VDD 3.3 Volt, Synth 1 power supply 50 LF1 First LO Loop Filter 51 LF1Rtn VSS Ref VCO1. Return for Loop Filter 1 52 VDD 3.3 Volt, Mixer 1 power supply 53 Mix1OP First Mixer Output Plus 54 Mix1OM First Mixer Output Minus 55 LNABias LNA Bias 56 VDD 3.3 Volt, LNA power supply 57 LNAInPL Inductor for RF In Plus 58 LNAInP RF Input Plus 59 LNAInM RF Input Minus 60 LNAInML Inductor for RF In Minus 61 FEAGC_A FE AGC Control A 62 FEAGC_B FE AGC Control B 63 RBias Bias Setting Resistor 64 RBiasRtn Return for RBias 65 Gnd_Pad Ground pad on bottom of package Table 1. Pin Descriptions (Listed by Pin Number) Pin Number Signal Name Description |
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