Datasheet

Ambient and Infrared Proximity Sensor

Proximity Threshold Registers (0x0B, 0x0C)

The value set by PRXTHR[7:0] in combination with the ABOVE bit controls the operation of the proximity interrupt func-

tion. If the ABOVE bit is set to 1, the proximity interrupt has been enabled (PRXINTE = 1), and the result of a proximity

measurement is greater than the value stored in PRXTHR[7:0], then a proximity interrupt event is recorded. The inter-

rupt bit is set subject to count conditions set by PRXPST[1:0]. Similarly, if the ABOVE bit is set to 0, then an interrupt

event is recorded if the result of a proximity measurement is less than value stored in PRXTHR[7:0].

Digital Gain Trim Registers (0x0F, 0x10)

Note: Values read from TRIM_GAIN_ registers are the complements of the written value. This is true for reading both the factory-

programmed values and the customer-programmed values.

TRIM_GAIN_GREEN[6:0] is used to modify the gain of the green channel.

TRIM_GAIN_IR[8:0] is used to modify the gain of the IR channel.

To tell the part to use the values written to this register, set the TRIM bit to 0 in the Main Configuration register after

writing new values to these registers.

ADDRESS

POWER-ON

RESET

STATE

R/W

PROX Threshold Indicator ABOVE 0x0B 0x00 R/W

PROX Threshold PRXTHR[7:0] 0x0C 0x00 R/W

ADDRESS

POWER-ON

RESET

STATE

R/W

Digital Gain Trim of

Green Channel

TRIM_GAIN_GREEN[6:0]

TRIM_

GAIN_

IR[0]

0x0F 0x80 R/TW

Digital Gain Trim of

Infrared Channel

TRIM_GAIN_IR[8:1] 0x10 0x80 R/TW

MAX44000

Maxim Integrated