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AD9925BBCZRL 数据表(PDF) 65 Page - Analog Devices |
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AD9925BBCZRL 数据表(HTML) 65 Page - Analog Devices |
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65 / 96 page ![]() AD9925 Rev. A | Page 65 of 96 Table 44. Register Map Selection Address Data Bit Content Default Value Register Name Register Description 7F [1:0] 0 BANKSELECT Register Bank Access for Bank 1, Bank 2, and Bank 3. 0: Bank 1, 1: Bank 2, 2: Bank 3, and 3: Bank 1. Table 45. AFE Operation Register Detail ress t Content fault Value Add Data Bi De Name Description 00 [1:0] 3 PWRDOWN 0: Normal Operation, 1: Standby 1, 2: Standby 2, 3: Standby 3. [2] 1 CLPENABLE 0: Disable OB Clamp, 1: Enable OB Clamp. [3] 0 CLPSPEED 0: Select Normal OB Clamp Settling, 1: Select Fast OB Clamp Settling. [4] 0 FASTUPDATE 1: Select Temporary Fast Clamping When VGA Gain Is Up- dated. [5] 0 PBLK_LVL DOUT Value during PBLK: 0: Blank to 0, 1: Blank to Clamp Level. [7:6] 0 TEST Test Operation Only. Set to 0. [8] 0 DCBYP 0: Enable DC Restore Circuit, 1: Bypass DC Restore Circuit dur- ing PBLK. [9] 0 TEST Test Use Only. Set to 0. [11:10] 0 CDSGAIN 0: 0 dB, 1: 2 dB, 2: 4 dB, and 3: 0 dB. 46. A trol Registe etail ress t Content fault Value Table FE Con r D Add Data Bi De Name Description 03 [1:0] 0 TEST Test Use Only. Set to 0. [2] 1 TEST Test Use Only. Recommended setting is 0. [3] 0 DOUTDISABLE 0 = Data Outputs Are Driven, 1 = Data Outputs Are Three-Stated. [4] 0 DOUTLATCH 0 = Latch Data Outputs with DOUT Phase, 1 = Output Latch Transparent. [5] 0 GRAYENCODE 0 = Binary Encode Data Outputs, 1 = Gray Encode Data Outputs. |
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