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VD5377 数据表(PDF) 78 Page - STMicroelectronics |
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VD5377 数据表(HTML) 78 Page - STMicroelectronics |
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78 / 88 page  I2C register map VD5377 78/88 Doc ID 022952 Rev 2 43 EXPOSURE_ CONTROL autoexpo_en 0 RW 01 Auto exposure control 0 = Disable 1 = Enable autoexpo_status 6:4 R 00 Auto exposure status 0 = UNDEF (no AEC performed yet) 1 = LOW (exposure increasing) 2 = STABLE (max exp pix within range) 3 = HIGH (exposure decreasing) 4 = SATURATED (exposure saturation decreasing) autoexpo_limit_flag 7 R 00 Exposure limit reached flag 0 = Exposure time within range 1 = Exposure time limit reached 44 MAX_EXPO_PIX max_exposed_pixel_ value 7:0 PR 00 Second maximum pixel value of the current frame (before CDS) 45 MAX_EXPO_PIX_ THRESH_HIGH max_exposed_pixel_ thresh_high 7:0 RW f0 High threshold value of max exposed pixel where the AEC is stable. 46 MAX_EXPO_PIX_ THRESH_LOW max_exposed_pixel_ thresh_low 7:0 RW b4 Low threshold value of max exposed pixel where the AEC is stable. 47 EXPOTIME exposure_time 7:0 PRW 40 Exposure time value in 3MHz clk period step (333ns) 49 EXPOTIME_MAX exposure_time_max 7:0 RW ff Maximum exposure time applied by the AEC. 4a EXPOTIME_MIN exposure_time_min 7:0 RW 01 Minimum exposure time applied by the AEC. 4b EXPO_FRAME_ UPDATE autoexpo_frame_ update 7:0 RW 01 Exposure update frequency (every N + 1 frames). Default is every two frames. 4e EXPOTIME_INC_ STEP expo_inc_step 7:0 RW 04 Exposure increment step (used when below max_expo_pix_thresh_low) 4f EXPOTIME_DEC_ STEP expo_dec_step 7:0 RW 04 Exposure decrement step (used when above max_expo_pix_thresh_high) 50 EXPOTIME_SAT_ DEC_STEP expo_sat_dec_step 7:0 RW 10 Exposure decrement step (used when above max_expo_pix is saturated = 255) Table 38. I2C register map (continued) Addr (Hex) Register name SIgnal name Bit Type Default (Hex) Comment |
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