MLX75023 Time-of-Flight Sensor Array
Datasheet
Step 3 : Reset
The 3rd phase of the reset period lasts another 5 us, where the PIXELFLUSH is asserted.
During the 2nd and 3rd phase of the reset, DMIXx states should be LOW.
7.1.3. Integration
After the reset cycle, the integration cycle is started. The electronic shutter should be kept open (keep SHUTTER
HIGH). The mix signals DMIX0/1 are alternated using the Time-of-Flight modulation pattern. When the
integration is completed, the mix signals DMIX0/1 should be again put in idle state LOW. The electronic shutter
can be closed by setting SHUTTER to LOW.
7.1.4. Read-out
Reading out the sensor is done by toggling both Row and Column address. Both addresses have 8 bit width.
The Row binary word is directly mapped to the row number. The column binary word is toggled from 00h to 09Fh
(0 to 159).
When row 0 is addressed the data from the pixels in row 0 is stored on a column-level memory Mem0.
After this, row 1 is addressed and the data from the pixels in row 1 is stored in a second column-level memory
Mem1. Simultaneously, after row 0 to row 1 transition, the data from row 0 previously stored in Mem0 can be
read at the outputs OUT0 to OUT3 by selecting the columns sequentially. The Mem0-Mem1 shadow buffer
switching is controlled by the B0_ROW signal; when reading out the matrix the B0_ROW signal must change its
state every row.
When selecting column 0, OUT0 and OUT3 offer the data from pixel 0, while OUT1 and OUT2 offer the data from
pixel 8. As such, the data is read out in blocks of 8. (Pixel 0 is located in the bottom right corner as indicated in the
mechanical dimensions drawing of Section 9.1)
When selecting column 1, OUT0/3 offer the data from pixel 1, while OUT1/2 offer the data from pixel 9.
When selecting column 8, OUT0/3 offer the data from pixel 16, while OUT1/2 offer the data from pixel 24.
As such when selecting column N, the data at
OUT0/3 is coming from pixel (N MOD 8) + 16*FLOOR(N/8)
OUT1/2 is coming from pixel (N MOD 8) + 16*FLOOR(N/8) + 8
OUT0/3 :
Pixel #
OUT1/2 :
Pixel #
Parameter
0
1
0
1
8
9
…
6
…
…
6
14
15
24
25
…
7
7
8
16
17
…
9
…
15
16
17
…
23
32
33
..
31
40
41
…
Table 13: Read-out table
Version V1.14
Page 14 of 27
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