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TMD2671
DIGITAL PROXIMITY DETECTOR
TAOS144B ? SEPTEMBER 2012
Persistence Register (0x0C)
The persistence register controls the filtering interrupt capabilities of the device. Configurable filtering is
provided to allow interrupts to be generated after each ADC integration cycle or if the ADC integration has
produced a result that is outside of the values specified by threshold register for some specified amount of time.
Table 8. Persistence Register
7
6
5
4
3
2
1
0
PERS
PPERS
Reserved
Address
0x0C
FIELD
PPERS
BITS
7:4
DESCRIPTION
Proximity interrupt persistence. Controls rate of proximity interrupt to the host processor.
FIELD VALUE
0000
0001
0010
...
1111
MEANING
???
1
2
...
15
INTERRUPT PERSISTENCE FUNCTION
Every proximity cycle generates an interrupt
1 proximity value out of range
2 consecutive proximity values out of range
...
15 consecutive proximity values out of range
Reserved
3:0
Default setting is 0x00.
Configuration Register (0x0D)
The configuration register sets the wait long time.
Table 9. Configuration Register
7
6
5
4
3
2
1
0
CONFIG
Reserved
WLONG
Reserved
Address
0x0D
FIELD
Reserved
WLONG
Reserved
BITS
7:2
1
0
DESCRIPTION
Reserved. Write as 0.
Wait Long. When asserted, the wait cycles are increased by a factor 12 × from that programmed in the
WTIME register.
Reserved. Write as 0.
Copyright E 2012, TAOS Inc.
18
r
www.taosinc.com
r
The LUMENOLOGY r Company
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