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MICRF507 Datasheet(PDF) 39 Page - Micrel Semiconductor |
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MICRF507 Datasheet(HTML) 39 Page - Micrel Semiconductor |
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39 / 47 page  Micrel, Inc. MICRF507 October 2, 2013 39 Revision 2.2 Detailed Description of Programming Bits ADR # BIT # Name Description Comments 0000000 7 By_LNA LNA bypass on/off 6 PA2 Power amplifier level, 3.bit Reference Table 17 5 PA1 Power amplifier level, 2.bit Reference Table 17 4 PA0 Power amplifier level, 1.bit Reference Table 17 3 Sync_en Synchronizer Mode bit Reference Table 7 2 Mode1 Main Mode selection 2.bit Reference Table 20 1 Mode0 Main Mode selection 1.bit Reference Table 20 0 Load_en “1” mandatory 0000001 7 Modulation1 Modulation selection 2.bit Reference Table 18 6 Modulation0 Modulation selection 1.bit Reference Table 18 5 OL_opamp_en “0” mandatory 4 PA_LDc_en “0” mandatory. PA on/off controlled by Lock Detect pin if this bit is 1 3 RSSI_en RSSI function on/off 2 LD_en Lock detect function on/off 1 PF_FC1 Pre-filter corner frequency 2.bit Reference Table 14 0 PF_FC0 Pre-filter corner frequency 1.bit Reference Table 14 0000010 7 CP_HI High charge-pump current (4x=500uA) on/off 6 SC_by Bypass of Switched Capacitor filter on/off 5 VCO_by “0” mandatory. Bypass of VCO stage on/off 4 PA_by Bypass of PA stage on/off 3 OUTS3 Test pins output 4.bit Reference Table 28 2 OUTS2 Test pins output 3.bit Reference Table 28 1 OUTS1 Test pins output 2.bit Reference Table 28 0 OUTS0 Test pins output 1.bit Reference Table 28 0000011 7 IFBias_s “1” mandatory. 6 IFA_HG “1” mandatory.High gain setting in preamplifier 5 VCO_Bias_s “0” mandatory.Select separate bias for VCO on VCOBias pin 4 VCO_IB2 VCO bias current setting, 3. bit (111 = highest current) Reference Table 11 3 VCO_IB1 VCO bias current setting, 2. bit (100 = typical current) Reference Table 11 2 VCO_IB0 VCO bias current setting, 1. bit Reference Table 11 1 VCO_freq1 Frequency setting of VCO, 2. bit (11=highest frequency) Reference Table 11 0 VCO_freq0 Frequency setting of VCO, 1.bit Reference Table 11 0000100 7 Mod_F2 Modulator filter setting, MSB 6 Mod_F1 Modulator filter setting 5 Mod_F0 Modulator filter setting, LSB 4 Mod_I4 Modulator current setting, MSB 3 Mod_I3 Modulator current setting 2 Mod_I2 Modulator current setting 1 Mod_I1 Modulator current setting |
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