TMD2672

DIGITAL PROXIMITY DETECTOR

TAOS149C − AUGUST 2012

20

r

r

Copyright

E 2012, TAOS Inc.

The LUMENOLOGY

r Company

www.taosinc.com

ID Register (0x12)

The ID Register provides the value for the part number. The ID register is a read-only register.

Table 14. ID Register

6

75

4

2

31

0

ID

ID

Reset

ID

FIELD

BITS

DESCRIPTION

ID

7:0

Part number identification

0x32 = TMD26721

ID

7:0

Part number identification

0x3B = TMD26723

Status Register (0x13)

The Status Register provides the internal status of the device. This register is read only.

Table 15. Status Register

6

75

4

2

31

0

STATUS

Reserved

Resv

Reset

0x00

Reserved

PINT

PVALID

PSAT

Reserved

FIELD

BIT

DESCRIPTION

Reserved

7

Reserved.

PSAT

6

Proximity Saturation. Indicates that the proximity measurement saturated.

PINT

5

Proximity Interrupt. Indicates that the device is asserting a proximity interrupt.

Reserved

4:2

Reserved. Bits read as 0.

PVALID

1

Proximity Valid. Indicates that the proximity channel has completed an integration cycle after PEN has been

asserted.

Reserved

0

Reserved.

Proximity Data Register (0x18 − 0x19h)

should be utilized with auto increment protocol bits set in the command register. With this operation, when the

lower byte register is read, the upper eight bits are stored into a shadow register, which is read by a subsequent

read to the upper byte. The upper register will read the correct value even if the next ADC cycle ends between

the reading of the lower and upper registers.

Table 16.

REGISTER

ADDRESS

BITS

DESCRIPTION

PDATAL

0x18

7:0

Proximity data low byte

PDATAH

0x19

7:0

Proximity data high byte