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Mira130

Sensor Operation

Datasheet

• PUBLIC

DS000715

• v6-00 • 2023-Aug-09

│ 43

9.6

HDR Calibration

In order to enhance image quality, this chip supports a HDR calibration (HDRC) feature which can

eliminate image noise as a result of using HDR mode. When HDRC is enabled, one more frame named

HDR point is read, so the readout time is doubled. Also, there is no exposure during reading when

HDRC is enabled. The frame rate is determined by both the exposure time (texp) and image reading time

(tread). For example, if the frame rate is 30 fps under HDR mode (i.e. one frame lasts for 33.33 ms), and

tread is 11.11 ms (according to 90 fps), the maximum exposure time is 33.33 ms - 2*tread - 11.11 ms.

Figure 49:

HDRC Control Registers

Function

Default Value

Description

HDR point read enable

16’h3222

’h00

Bit[5:4]: HDR point

2’b00: HDR point not read

2’b11: HDR point read

HDRC enable

16’h5001

’h00

Bit[3]: HDRC feature

’b0: Enable

1’b1: Disable

9.7

Temperature Sensor

The instantaneous temperature of this chip can be measured by an integrated temperature sensor and

is stored in a register for reading. The unit is Kelvin, and the accuracy is 0.25 K.

Figure 50:

Temperature Sensor Control Register

Function

Default Value

Description

Chip temperature

{16’h4c10, 16’h4c11[2:0]}

Read only

Temp [10:0]

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