AD9847AKST Analog Devices Inc, AD9847AKST Datasheet - Page 19

• Manufacturer Part Number: AD9847AKST
• Description: IC CCD SIGNAL PROC 10BIT 48-LQFP
• Manufacturer: Analog Devices Inc
• Type: CCD Signal Processor, 10-Bitr

Specifications of AD9847AKST

• Rohs Status: RoHS non-compliant
• Input Type: Logic
• Output Type: Logic
• Interface: 3-Wire Serial
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Analog Front End Type: CCD
• Analog Front End Category: Video
• Interface Type: Serial (3-Wire)
• Sample Rate: 40MSPS
• Input Voltage Range: 0.5V
• Operating Supply Voltage (min): 2.7/3V
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 3.6/5.5V
• Resolution: 10b
• 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: 48
• Package Type: LQFP
• Number Of Channels: 1
• Current - Supply: -
• Lead Free Status / RoHS Status: Not Compliant

REV. A
Register Name
SCP1–SCP3
SPTR0–SPTR3
Horizontal Sequence Control
The AD9847 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 12. The SCP 0 is always
hard-coded to line 0, and SCP1–3 are register programmable.
During each region bounded by the SCP, the SPTR registers
designate which sequence is used by each signal. CLPOB, CLPDM,
H1/H3
HBLK
HD
H1/H3
H2/H4
Table VI. Horizontal Sequence Control Parameters for CLPOB, CLPDM, PBLK, and HBLK
Length
12b
2b
SEQUENCE CHANGE OF POSITION #1
SEQUENCE CHANGE OF POSITION #2
SEQUENCE CHANGE OF POSITION #3
SEQUENCE CHANGE OF POSITION #0
UP TO FOUR INDIVIDUAL HORIZONTAL CLAMP AND BLANKING REGIONS MAY BE
PROGRAMMED WITHIN A SINGLE FIELD, USING THE SEQUENCE CHANGE POSITIONS.
0–4095 Line Number
0–3 Sequence Number
Range
Figure 12. Clamp and Blanking Sequence Flexibility
THE POLARITY OF H1 DURING BLANKING IS PROGRAMMABLE (H2 IS OPPOSITE POLARITY OF H1)
. . .
. . .
(V-COUNTER = 0)
Figure 11. HBLK Masking Control
SINGLE FIELD (1 VD INTERVAL)
–19–
CLAMP AND PBLK SEQUENCE REGION 0
CLAMP AND PBLK SEQUENCE REGION 1
CLAMP AND PBLK SEQUENCE REGION 2
CLAMP AND PBLK SEQUENCE REGION 3
PBLK, and HBLK each have a separate set of SCP. For example,
CLPOBSCP1 will define Region 0 for CLPOB, and in that region
any of the four individual CLPOB sequences may be selected
with the CLPOBSPTR registers. 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 VI.
CLAMP/BLANK SCP to Define Horizontal Regions 0–3
Sequence Pointer for Horizontal Regions 0–3
Description
AD9847
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