TSL2772 Datasheet, PDF (26/35 Pages) ams AG – LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING

TSL2772
LIGHT-TO-DIGITAL CONVERTER
with PROXIMITY SENSING
TAOS131 − DECEMBER 2011
Status Register (0x13)
The Status Register provides the internal status of the device. This register is read only.
Table 16. Status Register
7
6
5
4
3
2
1
0
STATUS
FIELD
lid Reserved
PSAT
PINT
a AINT
Reserved
v _PVALID
ill ^AVALID
Reserved PSAT
PRIeNsTv
AINT
Reserved
PVALID
Reset
AVALID _0x00
BIT
DESCRIPTION
7
Reserved. Bit reads as 0.
6
Proximity Saturation. Indicates that the proximity measurement saturated.
5
Proximity Interrupt. Indicates that the device is asserting a proximity interrupt.
4
ALS Interrupt. Indicates that the device is asserting an ALS interrupt.
3:2
Reserved. Bits read as 0.
1
Proximity Valid. Indicates that the proximity channel has completed an integration cycle after PEN has been
asserted.
0
ALS Valid. Indicates that the ALS channels have completed an integration cycle after AEN has been
asserted.
G ^{t ADC Channel Data Registers (0x14 − 0x17)}
s _{ALS data is stored as two 16-bit values. To ensure the data is read correctly, a two-byte read I2C transaction}
A ^t should be used 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 in a shadow register, which is read by a subsequent
s ^{n read to the upper byte. The upper register will read the correct value even if additional ADC integration cycles}
end between the reading of the lower and upper registers.
am nte REGISTER
C0DATA
o _C0DATAH
C1DATA
c _C1DATAH
Table 17. ADC Channel Data Registers
ADDRESS
0x14
0x15
0x16
0x17
BITS
7:0
7:0
7:0
7:0
DESCRIPTION
ALS CH0 data low byte
ALS CH0 data high byte
ALS CH1 data low byte
ALS CH1 data high byte
al Proximity Data Registers (0x18 − 0x19)
ic ^{Proximity data is stored as a 16-bit value. To ensure the data is read correctly, a two-byte read I2C transaction}
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
n 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.
ch_REGISTER
e PDATAL
T ^PDATAH
Table 18. Proximity Data Registers
ADDRESS
0x18
0x19
BITS
7:0
7:0
DESCRIPTION
Proximity data low byte
Proximity data high byte
The LUMENOLOGY r Company
r
r
www.taosinc.com
Copyright E 2011, TAOS Inc.
25