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AS7421

Datasheet

• PUBLIC

DS000667

• v1-00 • 2022-Aug-25

│ 34

10.2.4

CFG_LTF Register (Address 0x67)

Figure 34:

CFG_LTF Register

Addr: 0x67

CFG_LTF

Bit

Bit Name

Default

Access

Bit Description

7:5

TEMP_DIODE_SEL

000

Select temperature diode

4:3

LTF_CYCLE

Number of integration cycles during a spectral

measurement

00: One integration cycle, A (16 channels)

01: Two integration cycles, A+B (32 channels)

10: Three integration cycles, A+B+C (48 channels)

11: Four integration cycles, A+B+C+D (64 channels)

Note: To get spectral data of all 64 channels

LTF_CYCLE needs to be set to “11”. Do not change

this setting during LTF_EN = “1”

2:0

CLKMOD

100

Frequency of integration clock

010: Reserved

100: 1 MHz

101: Reserved

110: Reserved

Note: Do not change

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