AD9920ABBCZ datasheet(21/112 Pages) AD

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AD9920A

Rev. B | Page 21 of 112

tDOUTINH

tSHPINH

tSHDINH

P[0]

CLI

P[64] = P[0]

CCD

SIGNAL

P[32]

P[16]

P[48]

POSITION

RGr[0]

RGf[16]

SHD

SHDLOC[0]

H1r[0]

H1f[32]

tS1

SHP

SHPLOC[32]

DOUTPHASEP

tS2

NOTES

1. ALL SIGNAL EDGES ARE FULLY PROGRAMMABLE TO ANY OF THE 64 POSITIONS WITHIN ONE PIXEL PERIOD.

TYPICAL POSITIONS FOR EACH SIGNAL ARE SHOWN. HCLK MODE 1 IS SHOWN.

2. CERTAIN POSITIONS SHOULD BE AVOIDED FOR EACH SIGNAL, SHOWN ABOVE AS INHIBIT REGIONS.

3. IF A SETTING IN THE INHIBIT REGION IS USED, AN UNSTABLE PIXEL SHIFT CAN OCCUR IN THE HBLK LOCATION OR AFE PIPELINE.

4. THE tSHPINH AREA FROM 50 TO 62 ONLY APPLIES IN SLAVE MODE.

5. THE tSHDINH AREA WILL APPLY TO EITHER H1 RISING OR FALLING EDGE, DEPENDING ON THE VALUE OF THE

H1HBLK MASKING POLARITY.

6. THE tSHDINH AREA CAN ALSO BE CHANGED TO A tSHPINH AREA IF THE H1HBLKRETIME BIT = 1.

Figure 23. High Speed Timing Default Locations

P[0]

P[64] = P[0]

CCD

SIGNAL

P[32]

P[16]

P[48]

TAP POSITION

PHASE 1

RGr[0]

RGf[16]

SHD

SHDLOC[0]

HLr[0]

HLf[32]

tS1

SHP

SHPLOC[32]

PHASE 2

PHASE 3

NOTES

1. ALL SIGNAL EDGES ARE FULLY PROGRAMMABLE TO ANY OF THE 64 POSITIONS WITHIN ONE PIXEL PERIOD.

TYPICAL POSITIONS FOR EACH SIGNAL ARE SHOWN USING 3-PHASE HBLK MODE.

2. THE RISING EDGE OF EACH HCLK PHASE HAS AN ASSOCIATED SHDINH.

3. WHEN THE HBLK RETIME BITS (0x35 [3:0]) ARE ENABLED, THE INHIBITED AREA BECOMES SHPINH.

4. WHEN THE HBLK MASK LEVEL FOR PHASE 1, 2, OR 3 IS CHANGED TO LOW, THE INHIBIT AREA IS

REFERENCED TO THE HCLK FALLING EDGE, INSTEAD OF THE HCLK RISING EDGE.

SHDINH/SHPINH

Figure 24. High Speed Timing Typical Locations, 3-Phase HCLK Mode

AD9920ABBCZ Datasheet(PDF) 21 Page - Analog Devices

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