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AD9789BBCZ датащи(PDF) 32 Page - Analog Devices |
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AD9789BBCZ датащи(HTML) 32 Page - Analog Devices |
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32 / 76 page ![]() AD9789 Rev. A | Page 32 of 76 The three NCO 0 frequency tuning word registers together compose the 24-bit frequency tuning word for NCO 0. For more information about programming these registers, see the Baseband Digital Upconverter section. Table 22. NCO 0 Frequency Tuning Word Registers (Address 0x0A to Address 0x0C) Address Bit Name Description 0x0A FTW0[7:0] Frequency tuning word for NCO 0, Bits[7:0] 0x0B FTW0[15:8] Frequency tuning word for NCO 0, Bits[15:8] 0x0C FTW0[23:16] Frequency tuning word for NCO 0, Bits[23:16] The three NCO 1 frequency tuning word registers together compose the 24-bit frequency tuning word for NCO 1. For more information about programming these registers, see the Baseband Digital Upconverter section. Table 23. NCO 1 Frequency Tuning Word Registers (Address 0x0D to Address 0x0F) Address Bit Name Description 0x0D FTW1[7:0] Frequency tuning word for NCO 1, Bits[7:0] 0x0E FTW1[15:8] Frequency tuning word for NCO 1, Bits[15:8] 0x0F FTW1[23:16] Frequency tuning word for NCO 1, Bits[23:16] The three NCO 2 frequency tuning word registers together compose the 24-bit frequency tuning word for NCO 2. For more information about programming these registers, see the Baseband Digital Upconverter section. Table 24. NCO 2 Frequency Tuning Word Registers (Address 0x10 to Address 0x12) Address Bit Name Description 0x10 FTW2[7:0] Frequency tuning word for NCO 2, Bits[7:0] 0x11 FTW2[15:8] Frequency tuning word for NCO 2, Bits[15:8] 0x12 FTW2[23:16] Frequency tuning word for NCO 2, Bits[23:16] The three NCO 3 frequency tuning word registers together compose the 24-bit frequency tuning word for NCO 3. For more information about programming these registers, see the Baseband Digital Upconverter section. Table 25. NCO 3 Frequency Tuning Word Registers (Address 0x13 to Address 0x15) Address Bit Name Description 0x13 FTW3[7:0] Frequency tuning word for NCO 3, Bits[7:0] 0x14 FTW3[15:8] Frequency tuning word for NCO 3, Bits[15:8] 0x15 FTW3[23:16] Frequency tuning word for NCO 3, Bits[23:16] The three rate converter denominator (Q) registers together compose the 24-bit denominator for the rate converter decimation ratio. For more information about programming these registers, see the Sample Rate Converter section. Table 26. Rate Converter Denominator (Q) Registers (Address 0x16 to Address 0x18) Address Bit Name Description 0x16 Q[7:0] Rate converter denominator, Bits[7:0] 0x17 Q[15:8] Rate converter denominator, Bits[15:8] 0x18 Q[23:16] Rate converter denominator, Bits[23:16] The three rate converter numerator (P) registers together compose the 24-bit numerator for the rate converter decimation ratio. For more information about programming these registers, see the Sample Rate Converter section. Table 27. Rate Converter Numerator (P) Registers (Address 0x19 to Address 0x1B) Address Bit Name Description 0x19 P[7:0] Rate converter numerator, Bits[7:0] 0x1A P[15:8] Rate converter numerator, Bits[15:8] 0x1B P[23:16] Rate converter numerator, Bits[23:16] |
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