PART NUMBER:
± 2g / 4g / 8g Tri-axis Digital
Accelerometer Specifications
KXTF9-4100
Rev. 6
Jun-2011
INT_CTRL_REG1
This register controls the settings for the physical interrupt pin (7). Note that to properly change the
value of this register, the PC1 bit in CTRL_REG1 must first be set to “0”.
R/W
0
Bit7
R/W
0
Bit6
R/W
IEN
Bit5
R/W
IEA
Bit4
R/W
IEL
Bit3
R/W
IEU
Bit2
R/W
0
Bit1
R/W
0
Bit0
Reset Value
00010000
I C Address: 0x1Eh
2
IEN enables/disables the physical interrupt pin (7)
IEN = 0 – physical interrupt pin (7) is disabled
IEN = 1 – physical interrupt pin (7) is enabled
IEA sets the polarity of the physical interrupt pin (7)
IEA = 0 – polarity of the physical interrupt pin (7) is active low
IEA = 1 – polarity of the physical interrupt pin (7) is active high
IEL sets the response of the physical interrupt pin (7)
IEL = 0 – the physical interrupt pin (7) latches until it is cleared by reading INT_REL
IEL = 1 – the physical interrupt pin (7) will transmit one pulse with a period of 0.05ms
IEU sets an alternate unlatched response for the physical interrupt pin (7) when the motion
interrupt feature (WUF) only is enabled.
IEU = 0 – the physical interrupt pin (7) latches or pulses per the IEL bit until it is cleared
by reading INT_REL
IEU = 1 – the physical interrupt pin (7) will follow an unlatched response if the motion
interrupt feature is enabled
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