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AD9518-2 датащи(PDF) 54 Page - Analog Devices |
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AD9518-2 датащи(HTML) 54 Page - Analog Devices |
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54 / 64 page ![]() AD9518-2 Data Sheet Rev. C | Page 54 of 64 Reg. Addr. (Hex) Bits Name Description 1 REF1 frequency > threshold Read-only register. Indicates if the frequency of the signal at REF2 is greater than the threshold frequency set by Register 0x01A, Bit 6. 0: REF1 frequency is less than threshold frequency. 1: REF1 frequency is greater than threshold frequency. 0 Digital lock detect Read-only register. Digital lock detect. 0: PLL is not locked. 1: PLL is locked. Table 45. LVPECL Outputs Reg. Addr. (Hex) Bits Name Description 0x0F0 4 OUT0 invert Sets the output polarity. 0: noninverting (default). 1: inverting. [3:2] OUT0 LVPECL differential voltage Sets the LVPECL output differential voltage (VOD). 3 2 VOD (mV) 0 0 400. 0 1 600. 1 0 780 (default). 1 1 960. [1:0] OUT0 power-down LVPECL power-down modes. 1 0 Mode Output 0 0 Normal operation (default). On 0 1 Partial power-down, reference on; use only if there are no external load resistors. Off 1 0 Partial power-down, reference on, safe LVPECL power-down. Off 1 1 Total power-down, reference off; use only if there are no external load resistors. Off 0x0F1 4 OUT1 invert Sets the output polarity. 0: noninverting (default). 1: inverting. [3:2] OUT1 LVPECL differential voltage Sets the LVPECL output differential voltage (VOD). 3 2 VOD (mV) 0 0 400. 0 1 600. 1 0 780 (default). 1 1 960. [1:0] OUT1 power-down LVPECL power-down modes. 1 0 Mode Output 0 0 Normal operation. On 0 1 Partial power-down, reference on; use only if there are no external load resistors. Off 1 0 Partial power-down, reference on, safe LVPECL power-down (default). Off 1 1 Total power-down, reference off; use only if there are no external load resistors. Off 0x0F2 4 OUT2 invert Sets the output polarity. 0: noninverting (default). 1: inverting. [3:2] OUT2 LVPECL differential voltage Sets the LVPECL output differential voltage (VOD). 3 2 VOD (mV) 0 0 400. 0 1 600. 1 0 780 (default). 1 1 960. [1:0] OUT2 power-down LVPECL power-down modes. 1 0 Mode Output 0 0 Normal operation (default). On 0 1 Partial power-down, reference on; use only if there are no external load resistors. Off 1 0 Partial power-down, reference on, safe LVPECL power-down. Off 1 1 Total power-down, reference off; use only if there are no external load resistors. Off |
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