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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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AD9396/PCB Datasheet(PDF) 23 Page - Analog Devices |
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AD9396/PCB Datasheet(HTML) 23 Page - Analog Devices |
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23 / 48 page  AD9396 Rev. 0 | Page 23 of 48 Hex Address Read/Write or Read Only Bits Default Value Register Name Description [0] *******0 Bad Sync Detect 0 = not detected. 1 = detected. 0x17 Read [3:0] ****0000 HSYNCs per VSYNC MSB MSB of HSYNCs per VSYNC. 0x18 Read [7:0] 00000000 HSYNCs per VSYNC HSYNCs per VSYNC count. 0x19 Read/Write [7:0] 00001000 Clamp Placement Number of pixel clocks after trailing edge of HSYNC to begin clamp. 0x1A Read/Write [7:0] 00010100 Clamp Duration Number of pixel clocks to clamp. 0x1B Read/Write [7] 0******* Red Clamp Select 0 = clamp to ground. 1 = clamp to midscale. [6] *0****** Green Clamp Select 0 = clamp to ground. 1 = clamp to midscale. [5] **0***** Blue Clamp Select 0 = clamp to ground. 1 = clamp to midscale. [4] ***0**** Clamp During Coast Enable 0 = don’t clamp during coast. 1 = clamp during coast. [3] ****0*** Clamp Disable 0 = internal clamp enabled. 1 = internal clamp disabled. [1] ******1* Programmable Bandwidth 0 = low bandwidth. 1 = full bandwidth. [0] *******0 Hold Auto-Offset 0 = normal auto-offset operation. 1 = hold current offset value. 0x1C Read/Write [7] 0******* Auto-Offset Enable 0 = manual offset. 1 = auto-offset using offset as target code. [6:5] *10***** Auto-Offset 00 = every clamp. Update Mode 01 = every 16 clamps. 10 = every 64 clamps. 11 = every VSYNC. [4:3] ***01*** Difference Shift 00 = 100% of difference used to calculate new offset. Amount 01 = 50%. 10 = 25%. 11 = 12.5%. [2] *****1** Auto Jump Enable 0 = normal operation. 1 = if code > 15 codes off, offset is jumped to the predicted offset necessary to fix the >15 code mismatch. [1] ******1* Post Filter Enable 0 = disable post filer. 1 = enable post filter. Post filter reduces update rate by 1/6 and requires that all six updates recommend a change before changing the offset. This prevents unwanted offset changes. [0] *******0 Toggle Filter Enable The toggle filter looks for the offset to toggle back and forth and holds it if triggered. This prevents toggling in case of missing codes in the PGA. 0x1D Read/Write [7:0] 00001000 Slew Limit Limits the amount the offset can change by in a single update. 0x1E Read/Write [7:0] 32 Sync Filter Lock Threshold Number of clean HSYNCs required for sync filter to lock. 0x1F Read/Write [7:0] 50 Sync Filter Unlock Threshold Number of missing HSYNCs required to unlock the sync filter. Counter counts up if HSYNC pulse is missing and down for a good HSYNC. 0x20 Read/Write [7:0] 50 Sync Filter Window Width Width of the window in which HSYNC pulses are allowed. |
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