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參數(shù)資料
| 型號： | ICM-532BSA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | CIF Color CMOS Sensor with USB Output |
| 中文描述： | 到岸價格彩色CMOS傳感器輸出與USB |
| 文件頁數(shù)： | 12/15頁 |
| 文件大小： | 302K |
| 代理商： | ICM-532BSA |
ICM532B CIF Color CMOS Sensor with USB Output
Data Sheet, V 1.1 November, 2002
C
BID
2000, 2001,2002 IC Media Corporation & IC Media Technology Corp
11/21/2002
page
12
Company
Confidential
Bi-directional
Buffer
Capacitance
USB Output
Impedance
Input
Pull-up/down
Resistance
3
pF
R
O
6
18
R
L
50
K
4. Electrical DC Characteristics
Symbol
Parameter
Rating
Typical
3.3
Minimum
3.0
Maximum
3.6
Units
V
CC
Operating
Power Supply
Output High
Voltage
USB Output
Low Voltage
USB Output
High Voltage
V
V
OH
2.4
V
V
UL
0.3
V
V
UH
2.8
V
6.2. Clocking
The ICM-532B clock is generated from an external low cost 6MHz crystal. The on-board PLL
generates the required USB clock and the Video Clock. The nominal Video Clock rate is 8MHz. This
rate can be altered by setting either the Fastclock ( *1.5 ) or Slowclock ( /2.0 ) register bits.
Video Timing examples:
At 8MHz, the Video clock generates 1 pixel every 250ns, a line (500 pixels) every 125us, and 8 lines
every 1ms. This produces 8 lines to be packed into 1 USB data transfer, to make a 24 fps QVGA (352
x288) transfer rate.
At 12MHz, the Video clock generates 1 pixel every 166.7ns, a line (600 pixels) every 100us, and 10
lines every 1 ms. This produces 10 lines to be packed into 1 USB data transfer, to make a 30 fps QVGA
(320x240) transfer rate.
At 12MHz, the Video clock generates 1 pixel every 166.7ns, a line (500 pixels) every 83.3us, and 12
lines every 1 ms. This produces 6 lines to be packed into 1 USB data transfer, to make a 35 fps QCIF
(176 x 144) transfer rate.
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