AD9949KCPRL Analog Devices Inc, AD9949KCPRL Datasheet - Page 23

• Manufacturer Part Number: AD9949KCPRL
• Description: IC CCD SIGNAL PROCESSOR 40-LFCSP
• Manufacturer: Analog Devices Inc
• Type: CCD Signal Processor, 12-Bitr

Specifications of AD9949KCPRL

• Rohs Status: RoHS non-compliant
• Input Type: Logic
• Output Type: Logic
• Interface: 3-Wire Serial
• Mounting Type: Surface Mount
• Package / Case: 40-LFCSP
• Analog Front End Type: CCD
• Analog Front End Category: Video
• Interface Type: Serial (3-Wire)
• Sample Rate: 36MSPS
• Input Voltage Range: 0.5V
• 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: -20C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 40
• Package Type: LFCSP EP
• Number Of Channels: 1
• Current - Supply: -
• Lead Free Status / RoHS Status: Not Compliant

GENERATING SPECIAL HBLK PATTERNS
Six toggle positions are available for HBLK. Normally, only two
of the toggle positions are used to generate the standard HBLK
interval. However, the additional toggle positions may be used
to generate special HBLK patterns, as shown in Figure 24. The
pattern in this example uses all six toggle positions to generate
two extra groups of pulses during the HBLK interval. By
changing the toggle positions, different patterns can be created.
HORIZONTAL SEQUENCE CONTROL
The AD9949 uses sequence change positions (SCP) and
sequence pointers (SPTR) to organize the individual horizontal
sequences. Up to four SCPs are available to divide the readout
into four separate regions, as shown in Figure 25. The SCP0 is
always hard-coded to Line 0, and SCP1 to SCP3 are register
programmable. During each region bounded by the SCP, the
SPTR registers designate which sequence is used by each signal.
Table 21. External HBLK Register Parameters
Register
HBLKDIR
HBLKPOL
HBLKEXTMASK
Length
1b
1b
1b
SEQUENCE CHANGE OF POSITION 0
SEQUENCE CHANGE OF POSITION 1
SEQUENCE CHANGE OF POSITION 2
SEQUENCE CHANGE OF POSITION 3
UP TO FOUR INDIVIDUAL HORIZONTAL CLAMP AND BLANKING REGIONS MAY BE
PROGRAMMED WITHIN A SINGLE FIELD, USING THE SEQUENCE CHANGE POSITIONS.
Range
High/Low
High/Low
High/Low
(V-COUNTER = 0)
Figure 25. Clamp and Blanking Sequence Flexibility
Description
Specifies HBLK Internally Generated or Externally Supplied.
1 = External.
External HBLK Active Polarity.
0 = Active Low.
1 = Active High.
External HBLK Masking Polarity.
0 = Mask H1 Low.
1 = Mask H1 High.
SINGLE FIELD (1 VD INTERVAL)
Rev. B | Page 23 of 36
CLAMP AND PBLK SEQUENCE REGION 0
CLAMP AND PBLK SEQUENCE REGION 1
CLAMP AND PBLK SEQUENCE REGION 2
CLAMP AND PBLK SEQUENCE REGION 3
CLPOB, PBLK, and HBLK each have a separate set of SCPs. For
example, CLPOBSCP1 defines Region 0 for CLPOB, and in that
region any of the four individual CLPOB sequences may be
selected with the CLPOBSPTR register. The next SCP defines a
new region and in that region, each signal can be assigned to a
different individual sequence. The sequence control registers
are summarized in Table 20.
EXTERNAL HBLK SIGNAL
The AD9949 can also be used with an external HBLK signal.
Setting the HBLKDIR register (Address 0×40) to high disables
the internal HBLK signal generation. The polarity of the exter-
nal signal is specified using the HBLKPOL register, and the
masking polarity of H1 is specified using the HBLKMASK
register. Table 21 summarizes the register values when using an
external HBLK signal.
AD9949