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MT9M034 Datasheet(PDF) 22 Page - ON Semiconductor |
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MT9M034 Datasheet(HTML) 22 Page - ON Semiconductor |
22 / 39 page MT9M034 www.onsemi.com 22 Figure 16. Format of Embedded Data Output within a Frame {register_ value_LSB} 8’h5A Data line 1 Data line 2 8’h5A 8’hAA {register_ address_MSB} 8’hA5 {register_ address_LSB} 8’h5A {register_ value_MSB} 8’h5A {register_ value_LSB} data_format_ code =8’h0A 8’hAA {register_ address_MSB} 8’hA5 {register_ address_LSB} 8’h5A {register_ value_MSB} 8’h5A data_format_ code =8’h0A The data embedded in these rows are as follows: • 0x0A0 − identifier • 0xAA0 • Register Address MSB of the first register • 0xA50 • Register Address LSB of the first register • 0x5A0 • Register Value MSB of the first register addressed • 0x5A0 • Register Value LSB of the first register addressed • 0x5A0 • Register Value MSB of the register at first address + 2 • 0x5A0 • Register Value LSB of the register at first address + 2 • 0x5A0 • etc. Embedded Statistics The embedded statistics contain frame identifiers and histogram information of the image in the frame. This can be used by downstream auto−exposure algorithm blocks to make decisions about exposure adjustment. This histogram is divided into 244 bins with a bin spacing of 64 evenly spaced bins for digital code values 0 to 212, 120 evenly spaced bins for values 212 to 216, 60 evenly spaced bins for values 216 to 220. In HDR with a 16x exposure ratio, this approximately corresponds to the T1, T2, T3 exposures respectively. The first pixel of each line in the embedded statistics is a tag value of 0x0B0. This signifies that all subsequent statistics data is 10 bit data aligned to the MSB of the 12−bit pixel. The figure below summarizes how the embedded statistics transmission looks like. It should be noted that data, as shown in Figure 17, is aligned to the msb of each word: Figure 17. Format of Embedded Statistics Output within a Frame {2’b00,frame _countLSB} {2’b00,frame _IDMSB} {2’b00,frame _IDLSB} histogram bin0[9:0] histogram bin1[9:0] #words= 10’h1EC data_format_ code=8’h0B #words= 10’h00C data_format_ code=8’h0B mean [9:0] histBegin [19:10] histBegin [9:0] histEnd [19:10] histEnd [9:0] lowEndMean [19:10] lowEndMean [9:0] perc_lowEnd [19:10] perc_lowEnd [9:0] norm_abs_ dev[19:10] norm_abs_ dev[9:0] 8’h07 8’h07 8’h07 statsline1 statsline2 histogram bin0[19:10] histogram bin243 [19:0] histogram bin243 [9:0] histogram bin1 [19:0] mean [19:10] |
Número de pieza similar - MT9M034_17 |
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Descripción similar - MT9M034_17 |
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