AD9929BBCZ Analog Devices Inc, AD9929BBCZ Datasheet - Page 46

• Manufacturer Part Number: AD9929BBCZ
• Description: IC CCD SIGNAL PROCESSOR 64-BGA
• Manufacturer: Analog Devices Inc
• Type: CCD Signal Processor, 12-Bitr

Specifications of AD9929BBCZ

• Input Type: Logic
• Output Type: Logic
• Interface: 3-Wire Serial
• Mounting Type: Surface Mount
• Package / Case: 64-CSPBGA
• Analog Front End Type: CCD
• Analog Front End Category: Video
• Interface Type: Serial (3-Wire)
• 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: 64
• Package Type: CSPBGA
• Number Of Channels: 1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant

AD9929
TIMING CONTROL
ELECTRONIC SHUTTER TIMING CONTROL
CCD image exposure time is controlled through the use of the
CCD substrate clock signal (XSUBCK), which pulses the CCD
substrate to clear out accumulated charges prior to the exposure
period. The AD9929 supports three types of electronic shut-
tering: normal shutter mode, suppression shutter mode, and
high speed shutter mode. Table 34 contains the registers
required for programming of XSUBCK pulses for each mode.
Normal Shutter Mode
Figure 49 shows the VD and XSUBCK output for normal
shutter mode. The XSUBCK pulses once per line. The number
of XSUBCK pulses per field can be programmed by setting
register XSUBCKNUM (Address 0x0B). As shown in Figure 49,
the XSUBCK pulses always begin on the line after the sensor
gate, as specified by XVSGACTLINE (Mode_Reg(1)).
SUBCK Suppression Mode
Normally, the XSUBCKs begin to pulse on the line following
the last sensor gate line (VSG). With some CCDs, the first
XSUBCK following the VSG line needs to be suppressed. The
XSUBCKSUPPRESS register allows for this suppression. The
first XSUBCK following the last VSG pulse is suppressed when
XSUBCKSUPPRESS = 1, as shown in Figure 50.
High Precision Shutter Mode
The high speed shutter mode can be operated in two different
modes, known as single pulse mode and multiple pulse mode.
These modes are set up by programming the
XSUBCKNUM_HP register and XSUBCKMODE_HP register,
as described in Table 28, Table 33, and shown in Figure 52 and
Figure 54.
Table 34. XSUBCK Registers
Register Name
XSUBCKNUM
XSUBCKSUPPRESS
XSUBCK_EN
XSUBCKMODE_HP
XSUBCKNUM_HP
XSUBCK1TOG1
XSUBCK1TOG2
XSUBCK2TOG1
XSUBCK2TOG2
XSUBCKSEL
1
Bit
Width
11
1
1
3
9
9
9
9
1
Register Type
Control (Address 0x0B)
Control (Address 0x01)
Control (Address 0x0B)
Control (Address 0x01)
Control (Address 0x0B)
System_Reg(14)
System_Reg(14)
System_Reg(15)
System_Reg(15)
Mode_Reg(2)
Reference
Counter
OL Counter
OL Counter
OL Counter
OL Counter
Rev. A | Page 46 of 64
–
–
–
–
–
–
Range
0–2047 Number of
Pulses
0–1 Number of Pulses
0–7 Number of Pulses
0–511 Pixel Location
0–511 Pixel Location
0–511 Pixel Location
0–511 Pixel Location
Single Pulse Mode
In addition to the normal operating XSUBCK pulse, one addi-
tional XSUBCK pulse can be applied within the HD line while
operating in this mode. As shown in Figure 49, the location of
the additional XSUBCK pulse is adjustable by setting the
XSUBCK_HPNUM register as described in Table 33. Finer
resolution of the exposure time is possible using this mode by
adding an additional XSUBCK pulse in the line, as shown in
Figure 54.
Multiple Pulse Mode
In addition to the normal operating XSUBCK pulse, up to seven
sequential XSUBCK pulses can be applied within the same line
while operating in this mode. As shown in Figure 54, the num-
ber of additional XSUBCK pulses is selectable by setting
XSUBCKMODE_HP = 1, and the XSUBCK_HPNUM registers
as described in Table 33.
Table 33. Single and Multiple Pulse Mode
XSUBCKNUM_HP
0
1
2
3
4
5
6
7
–
–
–
Single Pulse Mode
Normal Shutter
Mode Operation
Position #1
Position #2
Position #3
Position #4
Position #5
Position #6
Position #7
Description
Number of XSUBCK Pulses per Field.
Suppress First XSUBCK after Last XVSG
Line Pulse
XSUBCK Output Enable Control
(0 = Disable, 1 = Enable)
High Speed Shutter Mode Operation
High Speed Shutter XSUBCLK
Position/Number
XSUBCLK1 1st Toggle Position
XSUBCLK2 1st Toggle Position
(0 = XSUBCK1, 1 = XSUBCK2)
XSUBCLK1 2nd Toggle Position
XSUBCLK2 2nd Toggle Position
0
XSUBCKMODE_HP
Multiple
Pulse Mode
Normal Shutter
Mode Operation
1 additional pulse
2 additional pulses
3 additional pulses
4 additional pulses
5 additional pulses
6 additional pulses
7 additional pulses
1