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TRF2443IPFPR Datasheet(PDF) 38 Page - Texas Instruments |
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TRF2443IPFPR Datasheet(HTML) 38 Page - Texas Instruments |
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38 / 72 page  TRF2443 SLWS217A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009 ................................................................................................................................... www.ti.com REGISTER POWER-ON SUGGESTED NAME DESCRIPTION 2 VALUE VALUE Bit0 ADDR_0 0 0 Register address bits Bit1 ADDR_1 1 1 Bit2 ADDR_2 0 0 Bit3 ADDR_3 0 0 SPI address bits Bit4 ADDR_4 1 1 Bit5 RX_NINT_0 0 App. specific RX PLL N-divider division setting Power-On value = 112 (<00 000 000 0111 0000>) → Bit6 RX_NINT_1 0 App. specific fVCO = 2240 MHz (with fPFD = 20 MHz) Bit7 RX_NINT_2 0 App. specific fout = 140 MHz (minimum value Nmin = 56; Bit8 RX_NINT_3 0 App. specific maximum value Nmax = 65,535) Bit9 RX_NINT_4 1 App. specific Bit10 RX_NINT_5 1 App. specific Bit11 RX_NINT_6 1 App. specific Bit12 RX_NINT_7 0 App. specific Bit13 RX_NINT_8 0 App. specific Bit14 RX_NINT_9 0 App. specific Bit15 RX_NINT_10 0 App. specific Bit16 RX_NINT_11 0 App. specific Bit17 RX_NINT_12 0 App. specific Bit18 RX_NINT_13 0 App. specific Bit19 RX_NINT_14 0 App. specific Bit20 RX_NINT_15 0 App. specific Bit21 RSV 0 0 Reserved Bit22 RSV 0 0 Reserved Bit23 RSV 0 0 Reserved Bit24 RSV 0 0 Reserved Bit25 RSV 1 1 Reserved Bit26 RXDIV_SEL 0 0 RX VCO divider selection (1 = divide by 8; 0 = divide by 16) Bit27 RXCAL_CLK_0 1 1 Set the clock speed used in the RX VCO frequency autocalibration. The clock is derived from the reference clock through a frequency Bit28 RXCAL_CLK_1 0 0 divider. Bit29 RXCAL_CLK_2 1 1 Bit30 RXCAL_SEL 0 1 Select the RX VCO frequency calibration mode (1 = autocalibration; 0 = manual) Bit31 EN_RXCAL 0 1 Enable RX VCO frequency autocalibration (1 → start) RXCAL_CLK<2,0>: Set the frequency divider value used to derive the TX VCO calibration clock from the reference clock (See Table 5). Table 5. RX VCO Calibration Clock Divider vs. RXCAL_CLK<2,0> RXCAL_CLK FREQUENCY DIVIDER 000 1 001 8 010 16 011 128 100 256 101 1024 110 2048 111 16,684 38 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TRF2443 |
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