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AD9524/PCBZ 데이터시트(PDF) 52 Page - Analog Devices |
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AD9524/PCBZ 데이터시트(HTML) 52 Page - Analog Devices |
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52 / 56 page ![]() AD9524 Data Sheet Rev. E | Page 52 of 56 Address Bits Bit Name Description 0x22D [7:4] Reserved Reserved 3 Holdover active 1: holdover is active (both references are missing) 0: normal operation 2 Selected reference (in auto mode) Selected reference (applies only when the device automatically selects the reference; for example, not in manual control mode) 1: REFB 0: REFA 1 Reserved Reserved 0 VCO calibration in progress 1: VCO calibration in progress 0: VCO calibration not in progress Other (Address 0x230 to Address 0x234) Table 56. Status Signals Address Bits Bit Name Description 0x230 [7:6] Reserved Reserved [5:0] Status Monitor 0 control Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Muxout 0 0 0 0 0 0 GND 0 0 0 0 0 1 PLL1 and PLL2 locked 0 0 0 0 1 0 PLL1 locked 0 0 0 0 1 1 PLL2 locked 0 0 0 1 0 0 Both references are missing (REFA and REFB) 0 0 0 1 0 1 Both references are missing and PLL2 is locked 0 0 0 1 1 0 REFB selected (applies only to auto select mode) 0 0 0 1 1 1 REFA is OK 0 0 1 0 0 0 REFB is OK 0 0 1 0 0 1 REF_TEST is OK 0 0 1 0 1 0 VCXO is OK 0 0 1 0 1 1 PLL1 feedback is OK 0 0 1 1 0 0 PLL2 reference clock is OK 0 0 1 1 0 1 Reserved 0 0 1 1 1 0 REFA and REFB are OK 0 0 1 1 1 1 All clocks are OK (except REF_TEST) 0 1 0 0 0 0 PLL1 feedback is divide-by-2 0 1 0 0 0 1 PLL1 PFD down divide-by-2 0 1 0 0 1 0 PLL1 REF divide-by-2 0 1 0 0 1 1 PLL1 PFD up divide-by-2 0 1 0 1 0 0 GND 0 1 0 1 0 1 GND 0 1 0 1 1 0 GND 0 1 0 1 1 1 GND Note that all bit combinations after 010111 are reserved. |
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