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Si1141/42/43
RESPONSE @ 0x20
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value = 0000 0000
RESPONSE
RW
Bit
7:0
Name
RESPONSE
Function
The Response register is used in conjunction with command processing. When an error
is encountered, the response register will be loaded with an error code. All error codes
will have the MSB is set.
The error code is retained until a RESET or NOP command is received by the
sequencer. Other commands other than RESET or NOP will be ignored. However, any
autonomous operation in progress continues normal operation despite any error.
0x00–0x0F: No Error. Bits 3:0 form an incrementing roll-over counter. The roll over coun-
ter in bit 3:0 increments when a command has been executed by the Si114x. Once
autonomous measurements have started, the execution timing of any command
becomes non-deterministic since a measurement could be in progress when the
COMMAND register is written. The host software must make use of the rollover counter
to ensure that commands are processed.
0x80: Invalid Command Encountered during command processing
0x88: ADC Overflow encountered during PS1 measurement
0x89: ADC Overflow encountered during PS2 measurement
0x8A: ADC Overflow encountered during PS3 measurement
0x8C: ADC Overflow encountered during ALS-VIS measurement
0x8D: ADC Overflow encountered during ALS-IR measurement
0x8E: ADC Overflow encountered during AUX measurement
Rev. 1.3
45
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