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ISL29003
Register Set
There are eight registers that are available in the ISL29003. Table 1 summarizes the available registers and their functions.
TABLE 1. REGISTER SET
ADDR
REGISTER
(HEX)
00
NAME
Command
BIT(S)
7
FUNCTION NAME
Enable
0: disable ADC-core
FUNCTIONS/DESCRIPTION
1: enable ADC-core
6
5
4
3:2
1:0
ADCPD
Timing_Mode
Reserved
Mode<1:0>
Width<1:0>
0: Normal operation
1: Power-down Mode
0: Integration is internally timed
1: Integration is externally sync/controlled by I 2 C host
Selects ADC work mode
0: Diode1’s current to unsigned 16-bit data
1: Diode2’s current to unsigned 16-bit data
2: Difference between diodes (I1 - I2) to signed 15-bit data
3: reserved
Number of clock cycles; n-bit resolution
0: 2 16 cycles
1: 2 12 cycles
2: 2 8 cycles
3: 2 4 cycles
01
Control
7
6
5
Ext_Mode
Test_Mode
Int_Flag
Always set to logic 0. Factory use only.
Always set to logic 0
0: Interrupt is cleared or not yet triggered
1: Interrupt is triggered
4
3:2
1:0
Reserved
Gain<1:0>
Int_Persist
<1:0>
Always set to logic 0. Factory use only.
Selects the gain so range is
0: 0 to 1000 lux
1: 0 to 4000 lux
2: 0 to 16000 lux
3: 0 to 64000 lux
Interrupt is triggered after
0: 1 integration cycle
1: 4 integration cycles
2: 8 integration cycles
3: 16 integration cycles
02
03
Interrupt Threshold
HI
Interrupt Threshold
LO
7:0
7:0
Interrupt Threshold High byte of HI interrupt threshold. Default is 0xFF
HI
Interrupt Threshold High byte of the LO interrupt threshold. Default is 0x00
LO
04
LSB_Sensor
7:0
LSB_Sensor
Read-Only data register that contains the least significant byte of the
latest sensor reading.
05
MSB_Sensor
7:0
MSB_Sensor
Read-Only data register that contains the most significant byte of the
latest sensor reading.
06
LSB_Timer
7:0
LSB_Timer
Read-Only data register that contains the least significant byte of the
timer counter value corresponding to the latest sensor reading.
07
MSB_Timer
7:0
MSB_Timer
Read-Only data register that contains the most significant byte of the
timer counter value corresponding to the latest sensor reading.
5
FN7464.6
November 17, 2011
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