欢迎访问ic37.com |
会员登录 免费注册
发布采购

ADNS-3040 参数 Datasheet PDF下载

ADNS-3040图片预览
型号: ADNS-3040
PDF下载: 下载PDF文件 查看货源
内容描述: 超低功耗鼠标传感器 [Ultra Low-Power Mouse Sensor]
分类和应用: 模拟IC传感器信号电路光电二极管
文件页数/大小: 26 页 / 340 K
品牌: AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
 浏览型号ADNS-3040的Datasheet PDF文件第13页浏览型号ADNS-3040的Datasheet PDF文件第14页浏览型号ADNS-3040的Datasheet PDF文件第15页浏览型号ADNS-3040的Datasheet PDF文件第16页浏览型号ADNS-3040的Datasheet PDF文件第18页浏览型号ADNS-3040的Datasheet PDF文件第19页浏览型号ADNS-3040的Datasheet PDF文件第20页浏览型号ADNS-3040的Datasheet PDF文件第21页  
Motion  
Address: 0x02  
Access: Read/Write  
Reset Value: 0x00  
Bit  
7
6
5
4
3
2
1
0
Field  
MOT  
PIXRDY  
PIXFIRST  
OVF  
Reserved  
Reserved  
Reserved  
Reserved  
Data Type: Bit field.  
USAGE: Register 0x02 allows the user to determine if motion has occurred since the last  
time it was read. If the MOT bit is set, then the user should read registers 0x03 and 0x04 to get  
the accumulated motion. Read this register before reading the Delta_Y and Delta_X registers.  
Writing anything to this register clears the MOT and OVF bits, Delta_Y and Delta_X registers. The  
written data byte is not saved.  
Internal buffers can accumulate more than eight bits of motion for X or Y. If either one of the  
internal buffers overflows, then absolute path data is lost and the OVF bit is set. This bit is  
cleared once some motion has been read from the Delta_X and Delta_Y registers, and if the  
buffers are not at full scale. Since more data is present in the buffers, the cycle of reading the  
Motion, Delta_X and Delta_Y registers should be repeated until the motion bit (MOT) is cleared.  
Until MOT is cleared, either the Delta_X or Delta_Y registers will read either positive or negative  
full scale. If the motion register has not been read for long time, at 400 cpi it may take up to 16  
read cycles to clear the buffers, at 800 cpi, up to 32 cycles. To clear an overflow, write anything  
to this register.  
The PIXRDY bit will be set whenever a valid pixel data byte is available in the Pixel_Dump  
register. Check that this bit is set before reading from Pixel_Dump. To ensure that the  
Pixel_Grab pointer has been reset to pixel 0,0 on the initial write to Pixel_Grab, check to see if  
PIXFIRST is set to high.  
Field Name  
Description  
MOT  
Motion since last report  
0 = No motion  
1 = Motion occurred, data ready for reading in Delta_X and Delta_Y registers  
PIXRDY  
Pixel Dump data byte is available in Pixel_Dump register  
0 = data not available  
1 = data available  
PIXFIRST  
This bit is set when the Pixel_Grab register is written to or when the complete pixel array has been  
read, initiating an increment to pixel 0,0.  
0 = Pixel_Grab data not from pixel 0,0  
1 = Pixel_Grab data is from pixel 0,0  
OVF  
Motion overflow, Y and/or X buffer has overflowed since last report  
0 = no overflow  
1 = Overflow has occurred  
17  
 复制成功!