- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373970 > AD9898 (Analog Devices, Inc.) CCD Signal Processor with Precision Timing⑩ Generator PDF資料下載
參數(shù)資料
| 型號(hào)： | AD9898 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | CCD Signal Processor with Precision Timing⑩ Generator |
| 中文描述： | CCD信號(hào)處理器精確定時(shí)⑩發(fā)生器 |
| 文件頁數(shù)： | 16/52頁 |
| 文件大小： | 557K |
| 代理商： | AD9898 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當(dāng)前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
REV. 0
–16–
AD9898
SYSTEM OVERVIEW
Figure 5 shows the typical system block diagram for the AD9898.
The CCD output is processed by the AD9898’s AFE circuitry,
which consists of a CDS, VGA, black level clamp, and A/D
converter. The digitized pixel information is sent to the digital
image processor chip, which performs the postprocessing and
compression. To operate the CCD, all CCD timing parameters
are programmed into the AD9898 from the system micropro-
cessor, through the 3-wire serial interface. From the system
master clock, CLI, provided by the image processor or external
crystal, the AD9898 generates all the CCD’s horizontal and
vertical clocks and all internal AFE clocks. External synchroni-
zation is provided by a SYNC pulse from the microprocessor,
which will reset internal counters and resynchronize the VD and
HD outputs.
V-DRIVER
CCD
AD9898
DIGITAL
IMAGE
PROCESSING
ASIC
P
CLI
VGATE
HD, VD
FD
DOUT[9:0]
DCLK1
MSHUT
STROBE
H1, H2, RG, VSUB
CCDIN
V1–V4, VSG1, VSG2, SUBCK
SERIAL
INTERFACE
SYNC
OUTCONT
Figure 5. Typical System Block Diagram, Master Mode
The AD9898 powers up in slave mode, in which the VD and
HD are provided externally from the image processor. In this
mode, all AD9898 timing will be synchronized with VD and
HD. The H-drivers for H1–H2 and RG are included in the
AD9898, allowing these clocks to be directly connected to the
CCD. H-drive voltage of up to 3.6 V is supported. An external
V-driver is required for the vertical transfer clocks, the sensor
gate pulses, and the substrate clock. The AD9898 also includes
programmable MSHUT and STROBE outputs, which may be
used to trigger mechanical shutter and strobe (flash) circuitry.
Figure 6 shows the horizontal and vertical counter dimensions
for the AD9898. All internal horizontal and vertical clocking is
programmed using these dimensions and is used to specify line
and pixel locations.
12-BIT HORIZONTALCOUNTER = 4096 PIXELS MAX
1
MAXIMUM FIELD DIMENSIONS
Figure 6. Horizontal and Vertical Counters
CLI INPUT CLOCK DIVIDER
The AD9898 provides the capability of dividing the CLI input
clock using register CLKDIV (Addr 0xD5). The following
procedure must be followed to reset the AFE and digital circuits
when CLKDIV is reprogrammed back to 0 from CLKDIV = 1,
2, or 3. The DCLK1 output will become unstable if this proce-
dure is not followed:
Step 1: CLKDIV = 1, 2, or 3 (CLI divided by setting value)
Step 2: CLKDIV = 0 (CLI reprogrammed for no division)
Step 3: DIGSTBY = AFESTBY = 0
Step 4: DIGSTBY = AFESTBY = 1
GRAY CODE REGISTERS
Table V lists the AD9898 registers requiring gray code values.
Below is an example of applying a gray code number for
HDLEN using a line length of 1560 pixels:
HDLEN = (1560 – 4) = 1556
10
(See Table XI note about HDLEN.)
1556
10
= 0x51E
The gray code value of 0x51E would be programmed in the
12-bit HDLEN register.
Table V. Gray Code Registers
Register Name
Register Type
HDLEN
CLPTOG1
CLPTOG2
HDLASTLEN
System_Reg(12)
System_Reg(15)
System_Reg(15 and 16)
Mode_Reg(1)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD9898KCP-20 | CCD Signal Processor with Precision Timing⑩ Generator |
| AD9898KCPRL-20 | TVPS00RF-21-41S W/ PC CON |
| AD9901 | Ultrahigh Speed Phase/Frequency Discriminator |
| AD9901KP | Ultrahigh Speed Phase/Frequency Discriminator |
| AD9901KQ | TVS Diode; Diode Type:Bidirectional TVS; Stand-Off Voltage, VRWM:30V; Breakdown Voltage, Vbr:33.3V; Package/Case:DO-214AB; Leaded Process Compatible:Yes; No. of Lines Protected Max:1; Peak Pulse Power PPK @ 10x1000uS:1500W RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9898KCP-20 | 制造商:Rochester Electronics LLC 功能描述:10 BIT 20 MSPS ANALOG FRONT END CONVERTE - Bulk 制造商:Analog Devices 功能描述: |
| AD9898KCPRL-20 | 制造商:AD 制造商全稱:Analog Devices 功能描述:CCD Signal Processor with Precision Timing⑩ Generator |
| AD9899ARS-2 | 制造商:Analog Devices 功能描述: |
| AD9901 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultrahigh Speed Phase/Frequency Discriminator |
| AD9901KP | 制造商:Analog Devices 功能描述:PLL Frequency Synthesizer Single 20-Pin PLCC 制造商:Rochester Electronics LLC 功能描述:IC VHF PHCOMP AD9901 IC - Bulk 制造商:Analog Devices 功能描述:IC DISCRIMINATOR |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。