SI1133 Datasheet, PDF (16/43 Pages) Silicon Laboratories – UV Index/Ambient Light Sensor IC with IC Interface

Si1133 Data Sheet
User to Sensor Communication
5.4 I²C Register Summary
The content of the three MSBits of Response0 after reset will depend on the running state (see the Response0 write up).
Table 5.2. I2C Registers
Register Name
PART_ID
HW_ID
REV_ID
HOSTIN0
COMMAND
RESET
RESPONSE1
RESPONSE0
IRQ_STATUS
HOSTOUT0
to
HOSTOUT25
I2C Address
0x00
0x01
0x02
0x0A
0x0B
0x0F
0x10
0x11
0x12
0x13
to
0x2C
Direction WRT
Host
IN
IN
IN
IN/OUT
IN/OUT
IN/OUT
IN
IN
IN
IN
Function
Value after Reset Direction WRT Sen-
sor
(Hard or Soft)
Returns DEVID
(0x33 for the
Si1133).
PART_ID
OUT
Returns Hardware
ID.
HW_ID
OUT
Hardware Rev
(0xMN).
REV_ID
OUT
Data for parameter
0x00
IN
table on PAR-
AM_SET write to
COMMAND register.
Initiated action in
0x00
IN
Sensor when specif-
ic codes written
here.
The six least signifi-
0x00
IN
cant bits enable In-
terrupt Operation.
Contains the read-
back value from a
param query or a
param set com-
mand.
0x00
IN/OUT
The 5^th MSB of the
counter is an error
indicator, with the 4
LSBits indicating the
error code when the
MSB is set.
0xXXXX1111
IN/OUT
The six least signifi-
cant bits show the
interrupt status.
0x00
IN/OUT
Captured Sensor
Data.
0x00
IN/OUT
5.4.1 PART_ID
I2C Address = 0x00;
Contains Part ID, e.g., 0x33 for Si1133.
silabs.com | Smart. Connected. Energy-friendly.
Rev. 0.91 | 15