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CC1010-RTR1 데이터시트(PDF) 99 Page - Texas Instruments |
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CC1010-RTR1 데이터시트(HTML) 99 Page - Texas Instruments |
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99 / 152 page ![]() CC1010 SWRS047 Page 99 of 152 Preamble Manchester encoded data Data package to be received RX Noise PD Averaging filter always free-running Noise Preamble Manchester encoded data Data package to be received RX Noise PD Averaging filter always free-running Noise Figure 28. Free-running averaging filter Manual Lock Automatic Lock Settling MODEM1. SETTLING (1:0) NRZ mode MODEM1.LOCK_ AVG_MODE='1' MODEM1.LOCK_ AVG_IN='0'=→’1’** UART mode MODEM1.LOCK_ AVG_MODE='1' MODEM1.LOCK_ AVG_IN='0'=→’1’** NRZ mode MODEM1.LOCK_ AVG_MODE='0' MODEM1.LOCK_ AVG_IN='X'*** UART mode MODEM1.LOCK_ AVG_MODE='0' MODEM1.LOCK_ AVG_IN='X'*** 00 14 11 16 16 01 25 22 32 32 10 46 43 64 64 11 89 86 128 128 Table 31. Minimum preamble bits for locking the averaging filter, NRZ and UART mode Notes: ** The averaging filter is locked when MODEM1.LOCK_AVG_IN is set to 1 *** X = Do not care. The timer for the automatic lock is started when RX mode is set in the RFMAIN register Also please note that in addition to the number of bits required to lock the filter, you need to add the number of bits needed for the preamble detector. See the next section for more information. Settling MODEM1. SETTLING (1:0) Free-running Manchester mode MODEM1.LOCK_ AVG_MODE='1' MODEM1.LOCK_ AVG_IN='0' 00 23 01 34 10 55 11 98 Table 32. Minimum number preamble chips for averaging filter, Manchester mode |
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