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CC1110-RTY1 Datasheet(PDF) 178 Page - Texas Instruments |
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CC1110-RTY1 Datasheet(HTML) 178 Page - Texas Instruments |
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178 / 203 page  CC1110 CC1110 PRELIMINARY Datasheet (Rev. 1.01) SWRS033A Page 178 of 202 Bit Field Name Reset R/W Description 5:0 FREQ[21:16] 0x1E R/W FREQ[23:0] is the base frequency for the frequency synthesizer in increments of FXOSC/2 16. [] 0 : 23 216 FREQ f f XOSC carrier ⋅ = The default frequency word gives a base frequency of 800 MHz, assuming a 26.0 MHz crystal. With the default channel spacing settings, the following FREQ2 values and channel numbers can be used: FREQ2 Base frequency Frequency range (CHAN numbers) 10 (0x0A) 280MHz 300.2MHz-331MHz (101-255) 11 (0x0B) 306MHz 306MHz-347.8MHz (0-209) 14 (0x0E) 384MHz 400.2MHz-435MHz (81-255) 15 (0x0F) 410MHz 410MHz-461MHz (0-255) 16 (0x10) 436MHz 436MHz-463.8MHz (0-139) 17 (0x11) 462MHz 462MHz-463.8MHz (0-9) 30 (0x1E) 800MHz 800.2MHz-851MHz (1-255) 31 (0x1F) 826MHz 826MHz-877MHz (0-255) 32 (0x20) 852MHz 852MHz-903MHz (0-255) 33 (0x21) 878MHz 878MHz-927.8MHz (0-249) 34 (0x22) 904MHz 904MHz-927.8MHz (0-119) 0xDF0A: FREQ1 – Frequency control word, middle byte Bit Field Name Reset R/W Description 7:0 FREQ[15:8] 0xC4 R/W Ref. FREQ2 register 0xDF0B: FREQ0 – Frequency control word, low byte Bit Field Name Reset R/W Description 7:0 FREQ[7:0] 0xEC R/W Ref. FREQ2 register 0xDF0C: MDMCFG4 – Modem configuration Bit Field Name Reset R/W Description 7:6 CHANBW_E[1:0] 10 R/W 5:4 CHANBW_M[1:0] 00 R/W Sets the decimation ratio for the delta-sigma ADC input stream and thus the channel bandwidth. E CHANBW XOSC channel M CHANBW f BW _ 2 )· _ 4 ( 8 + ⋅ = Note that the combination CHANBW_E=0 and CHANBW_M=0 is not supported. The default values give 203kHz channel filter bandwidth, assuming a 26.0MHz crystal. 3:0 DRATE_E[3:0] 1100 R/W The exponent of the user specified symbol rate |
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