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LMX2572LP Datasheet(PDF) 36 Page - Texas Instruments |
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LMX2572LP Datasheet(HTML) 36 Page - Texas Instruments |
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36 / 83 page  36 LMX2572LP SNAS764 – MAY 2018 www.ti.com Product Folder Links: LMX2572LP Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated Table 48. Register R41 Field Descriptions Bit Field Type Reset Description 15 - 0 MASH_SEED[15:0] R/W 0h Lower 16 bits of MASH_SEED. MASH_SEED sets the initial state of the fractional engine. Useful for producing a phase shift and fractional spur optimization. 7.6.43 Register R42 (offset = 2Ah) [reset = 0000h] Figure 70. Register R42 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 PLL_NUM[31:16] R/W-0h Table 49. Register R42 Field Descriptions Bit Field Type Reset Description 15 - 0 PLL_NUM[31:16] R/W 0h Upper 16 bits of fractional numerator (NUM). 7.6.44 Register R43 (offset = 2Bh) [reset = 0000h] Figure 71. Register R43 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 PLL_NUM[15:0] R/W-0h Table 50. Register R43 Field Descriptions Bit Field Type Reset Description 15 - 0 PLL_NUM[15:0] R/W 0h Lower 16 bits of fractional numerator (NUM). 7.6.45 Register R44 (offset = 2Ch) [reset = 08A2h] Figure 72. Register R44 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 0 OUTA_PWR OUTB_P D OUTA_P D MASH_R ESET_N 0 0 MASH_ORDER R/W-0h R/W-08h R/W-1h R/W-0h R/W-1h R/W-0h R/W-2h Table 51. Register R44 Field Descriptions Bit Field Type Reset Description 15 - 14 R/W 0h Program 0h to this field. 13 - 8 OUTA_PWR R/W 08h Adjusts RFoutA output power. Higher numbers give more output power. Values greater than 18 are prohibited. 7 OUTB_PD R/W 1h Powers down RF output B. 0: Normal operation 1: Power down 6 OUTA_PD R/W 0h Powers down RF output A. 0: Normal operation 1: Power down 5 MASH_RESET_N R/W 1h Resets MASH. 0: Reset 1: Normal operation 4 - 3 R/W 0h Program 0h to this field. |
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