AD9923BBCZRL Analog Devices Inc, AD9923BBCZRL Datasheet - Page 22

• Manufacturer Part Number: AD9923BBCZRL
• Manufacturer: Analog Devices Inc

Specifications of AD9923BBCZRL

• Analog Front End Type: CCD
• Analog Front End Category: Video
• Interface Type: Serial (3-Wire)
• Sample Rate: 36MSPS
• Input Voltage Range: 0.7V
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (typ): 3V
• Operating Supply Voltage (max): 3.6V
• Resolution: 12b
• Number Of Adc's: 1
• Power Supply Type: Analog/Digital
• Operating Temp Range: -25C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 105
• Package Type: CSPBGA
• Number Of Channels: 1
• Lead Free Status / RoHS Status: Compliant

AD9923
Generating HBLK Line Alternation
The AD9923 can alternate different HBLK toggle positions on
odd and even lines. This feature can be used in conjunction with
V-pattern odd/even alternation, or on its own. When 1 is
written to the HBLKALT register, HBLKTOGE1 and
HBLKTOGE2 are used on odd lines, and HBLKTOGE3 to
HBLKTOGE6 are used on even lines. Writing 2 to the
HBLKALT register gives the opposite result: HBLKTOGE1 and
HBLKTOGE2 are used on even lines, and HBLKTOGE3 to
HBLKTOGE6 are used on odd lines. When 3 is written to the
HBLKALT register, all six even toggle positions, HBLKTOGE1 to
HL/H1/H3
HL/H1/H3
H2/H4
HBLK
HBLK
H2/H4
HD
HD
HBLKTOGE3
HBLKTOGE1
ODD LINE
ODD LINE
HBLKTOGE4
HBLKTOGE2
HBLKTOGE5
Figure 29. HBLK Odd/Even Alternation Using HBLKALT = 1
Figure 30. HBLK Odd/Even Alternation Using HBLKALT = 2
ALTERNATING H-BLANK PATTERN USING HBLKALT = 1 MODE
ALTERNATING H-BLANK PATTERN USING HBLKALT = 2 MODE
HBLKTOGE6
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HBLKTOGE6, are used on even lines. There are also six
additional toggle positions, HBLKTOGO1 to HBLKTOGE6, for
odd lines. These registers are normally used for VPAT Group A,
VPAT Group B, and freeze/resume functions, but when
HBLKALT = 3, these registers become the odd line toggle
positions for HBLK.
Another HBLK feature is enabled by writing 4 to 7 to HBLKALT.
In these modes, the HBLK pattern is generated using a different
set of registers—HBLKSTART, HBLKEND, HBLKLEN, and
HBLKREP—along with four toggle positions. This allows for
multiple repeats of the HBLK signal, as shown in Figure 32.
HBLKTOGE3
HBLKTOGE1
EVEN LINE
EVEN LINE
HBLKTOGE4
HBLKTOGE2
HBLKTOGE5
HBLKTOGE6