參數(shù)資料
型號(hào)： VV5430C001
廠商： 意法半導(dǎo)體
英文描述： Monochrome Analog Output CMOS Image Sensors
中文描述： 單色模擬輸出CMOS圖像傳感器
文件頁(yè)數(shù)： 22/33頁(yè)
文件大?。?/td> 256K
代理商： VV5430C001
Read data from camera
VV5430
CD5430F-A
22/33
9.
Information describing the current configuration and the current exposure values can be read from the camera. The data is
formed into four bytes of 8 bits. Each pair of bytes is considered to be a data word and is read out msb first.
Read data from camera
Figure 9 : Read Data Format
The following tables defines the information contained in the read messages. By default, the Primary Read Data is accessed;
only if a Secondary Read Select bit is set in Setup Code_2 (header code 0010) is the Secondary information read.
S
R
/
W
A
A
A
A
A
P
ADDRESS[7:1]
0 0 1 0 0 x x 1
DATA[31:24]
DATA[23:16]
DATA[15:8]
DATA[7:0]
Read = 1
Camera acknowledge (valid address)
Master acknowledge
Master acknowledge
Primary Read Data:
Bit
Function
31 - 23
Coarse Exposure Value (9 bits)
22 - 14
Fine Exposure Value (9 bits)
13 - 10
Gain Value (4 bits)
9
Auto Exposure Control on/off
8
Internal Black Calibration on/off
7
Auto Gain Control on/off
6
Gamma or Linear Video Output
Normal or Backlit mode
1
5
4
Undefined
3 - 0
Camera Type ID Code (4 bits)
1. Bit 5 of the Primary Read message only reflects the state
of the BKLIT pin, not the combined result of the pin and
the serial interface BKLIT control bit.
Secondary Read Data:
Bit
Function
31 - 18
Undefined
17
Black Level monitor in progress
16 - 0
White Pixel count (17 bits)
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