Datasheet

PDF: 09005aef8202ec2e/Source: 09005aef8202ebf7 Micron Technology, Inc., reserves the right to change products or specifications without notice.
MT9D111__6_REV5.fm - Rev. B 2/06 EN
110 ©2004 Micron Technology, Inc. All rights reserved.
MT9D111 - 1/3.2-Inch 2-Megapixel SOC Digital Image Sensor
Output Format and Timing
Micron Confidential and Proprietary
Output Format and Timing
YUV/RGB Uncompressed Output
Uncompressed YUV or RGB data can be output either directly from the output format-
ting block or via a FIFO buffer with a capacity of 1,600 bytes, enough to hold one half
uncompressed line at full resolution. Buffering of data is a way to equalize the data out-
put rate when image decimation is used. Decimation produces an intermittent data
stream consisting of short high-rate bursts separated by idle periods. Figure 6 depicts
such a stream. High pixel clock frequency during bursts may be undesirable due to EMI
concerns.
Figure 6: Timing of Decimated Uncompressed Output Bypassing the FIFO
Figure 7 depicts the output timing of uncompressed YUV/RGB when a decimated data
stream is equalized by buffering or when no decimation takes place. The pixel clock fre-
quency remains constant during each LINE_VALID high period. Decimated data are
output at a lower frequency than full size frames, which helps to reduce EMI.
Figure 7: Timing of Uncompressed Full Frame Output or Decimated Output Passing
Through the FIFO
Timing details of uncompressed YUV/RGB output are shown in Figure 8 on page 111.
FRAME_VALID
LINE_VALID
PIXCLK
LINE_VALID
D
OUT
BT.601 code Pixel Data Pixel Data BT.601 Code
FRAME_VALID
LINE_VALID
PIXCLK
D
OUT [7:0]