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AD9923ABBCZ Datasheet(PDF) 72 Page - Analog Devices |
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AD9923ABBCZ Datasheet(HTML) 72 Page - Analog Devices |
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72 / 88 page ![]() AD9923A Rev. 0 | Page 72 of 88 Table 48. Timing Core Registers Address (Hex) Data Bits Default Value Update Type Name Description 30 [0] 0 SCK CLIDIVIDE Divide CLI input frequency by 2. 0: no divide. 1: divide by 2. 31 [5:0] 0 SCK H1POSLOC H1 rising edge location. [13:8] 20 H1NEGLOC H1 falling edge location. [16] 1 H1H2POL H1/H2 polarity control. 0: inverse of convention in Figure 18. 1: no inversion. 32 [5:0] 0 SCK H3POSLOC H3 rising edge location. [13:8] 20 H3NEGLOC H3 falling edge location. [16] 1 H3H4POL H3/H4 polarity control. 0: inverse of convention in Figure 18. 1: no inversion. 33 [5:0] 0 SCK HLPOSLOC HL rising edge location. [13:8] 20 HLNEGLOC HL falling edge location. [16] 1 HLPOL HL polarity control. 0: inverse of convention in Figure 18. 1: no inversion. 34 [5:0] 0 SCK RGPOSLOC RG rising edge location. [13:8] 10 RGNEGLOC RG falling edge location. [16] 1 RGPOL RG polarity control. 0: inverse of convention in Figure 18. 1: no inversion. 35 [0] 0 VD H1H2RETIME Retime HBLK for H1/H2 to the internal H1 clock. The preferred setting is 1, which adds one cycle of delay to the HBLK toggle positions. 0: no retime. 1: retime. [1] 0 H3H4RETIME Retime HBLK for H3/H4 to the internal H3 clock. [2] 0 HLRETIME Retime HBLK for HL to the internal HL clock. [3] 0 HLHBLKEN Enable HBLK for HL output. 0: disable. 1: enable. [6:4] 0 HBLKWIDTH Controls H1 to H4 width during HBLK as a fraction of pixel rate. 0: same frequency as pixel rate. 1: 1/2 pixel frequency, that is, it doubles the H1 to H4 pulse width. 2: 1/4 pixel frequency. 3: 1/6 pixel frequency. 4: 1/8 pixel frequency. 5: 1/10 pixel frequency. 6: 1/12 pixel frequency. 7: 1/14 pixel frequency. 36 [3:0] 1 SCK H1DRV H1 drive strength. 0: off. 1: 4.3 mA. 2: 8.6 mA. 3: 12.9 mA. 4: 17.2 mA. 5: 21.5 mA. 6: 25.8 mA. 7: 30.1 mA. |
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