AD9891KBC Analog Devices Inc, AD9891KBC Datasheet - Page 35

• Manufacturer Part Number: AD9891KBC
• Description: IC CCD SIGNAL PROC/GEN 64-CSPBGA
• Manufacturer: Analog Devices Inc
• Type: CCD Signal Processor, 10-Bitr

Specifications of AD9891KBC

• Rohs Status: RoHS non-compliant
• 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)
• Operating Supply Voltage (min): 2.7/3V
• 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: 64
• Package Type: CSPBGA
• Number Of Channels: 1
• Current - Supply: -
• Lead Free Status / RoHS Status: Not Compliant

POWER-DOWN MODE OPERATION
The AD9891/AD9895 contain three different power-down
modes to optimize the overall power dissipation in a particular
application. Bits [1:0] of the OPRMODE Register control the
power-down state of the device:
OPR_MODE [1:0] = 00 = Normal Operation (full power)
OPR_MODE[1:0] = 01 = Power-Down 1 Mode
OPR_MODE[1:0] = 10 = Power-Down 2 Mode
OPR_MODE[1:0] = 11 = Power-Down 3 Mode (lowest
overall power)
REV. A
(PIXEL COUNTER)
NOTES
1. INTERNAL H-COUNTER IS RESET 8 CLOCK CYCLES AFTER THE HD FALLING EDGE.
2. PxGA STEERING IS SYNCHRONIZED WITH THE RESET OF THE INTERNAL H-COUNTER (MOSAIC SEPARATE MODE IS SHOWN).
H124, RG, V1–V4,
H-COUNTER
PxGA GAIN
REGISTER
NOTES
1. SYNC RISING EDGE RESETS VD/HD AND COUNTERS TO ZERO.
2. SYNC POLARITY IS PROGRAMMABLE USING SYNCPOL REGISTER (ADDR x025).
3. DURING SYNC LOW, ALL INTERNAL COUNTERS ARE RESET AND VD/HD CAN BE SUSPENDED USING THE SYNCSUSPEND REGISTER (ADDR x026).
4. IF SYNCSUSPEND = 1, VERTICAL CLOCKS AND H1–H2, RG ARE HELD AT THEIR DEFAULT POLARITIES.
5. IF SYNCSUSPEND = 0, THEN ALL CLOCK OUTPUTS CONTINUE TO OPERATE NORMALLY UNTIL SYNC RESET EDGE.
VSG, SUBCK
CLI
HD
VD
SYNC
VD
HD
X
X
Figure 44. External VD/HD and Internal H-Counter Synchronization, SLAVE Mode
X
X
X
X
3ns MIN
Figure 43. SYNC Timing to Synchronize AD989x with External Timing
X
X
X
X
X
X
X
X
X
X
H-COUNTER
RESET
X
X
0
0
1
1
2
0
–35–
3
1
SUSPEND
0
4
Table XVI summarizes the operation of each power-down mode.
Note that in any mode, the OUT_CONT Register takes priority
over the power-down modes where the digital output states are
concerned. Power-Down 3 Mode has the lowest power consump-
tion, and it even powers down the crystal oscillator circuit
between CLI and CLO. Thus, if CLI and CLO are being used
with a crystal to generate the master clock, this circuit will be
powered down and there will be no clock signal. When returning
from Power-Down 3 Mode to normal operation, the timing core
must be reset at least 500 ms after the OPR_MODE Register is
written to. This will allow sufficient time for the crystal circuit
to settle.
1
5
0
6
7
1
8
0
1
9
10
0
11
1
12
0
13
AD9891/AD9895
1
14
0
2
0
1
3
2
2
3
3
4