IIS2MDC datasheet(33/40 Pages) STMICROELECTRONICS

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IIS2MDC

8.9

INT_SOURCE_REG (64h)

When interrupt latched is selected, reading this register resets all the bits in this register.

Table 34. INT_SOURCE_REG register

Table 35. INT_SOURCE_REG register description

8.10

INT_THS_L_REG (65h)

This register contains the least significant bits of the threshold value chosen for the interrupt.

Table 36. INT_THS_L_REG register

Table 37. INT_THS_L_REG register description

8.11

INT_THS_H_REG (66h)

This register contains the most significant bits of the threshold value chosen for the

interrupt.

Table 38. INT_THS_H_REG register

Table 39. INT_THS_H_REG register description

These registers set the threshold value for the output to generate the interrupt (INT bit in

INT_SOURCE_REG (64h)). This threshold is common to all three (axes) output values and

is unsigned unipolar. The threshold value is correlated to the current gain and it is unsigned

because the threshold is considered as an absolute value, but crossing the threshold is

detected for both positive and negative sides.

P_TH_S_

N_TH_S_

MROI

INT

P_TH_S_X

X-axis value exceeds the threshold positive side

P_TH_S_Y

Y-axis value exceeds the threshold positive side

P_TH_S_Z

Z-axis value exceeds the threshold positive side

N_TH_S_X

X-axis value exceeds the threshold negative side

N_TH_S_Y

Y-axis value exceeds the threshold negative side

N_TH_S_Z

Z-axis value exceeds the threshold negative side

MROI

MROI flag generation is alway enabled.This flag is reset by reading

INT_SOURCE_REG (64h).

INT

This bit signals when the interrupt event occurs.

TH7

TH6

TH5

TH4

TH3

TH2

TH1

TH0

TH[7:0]

Threshold value for the interrupt.

TH15

TH14

TH13

TH12

TH11

TH10

TH9

TH8

TH[15:8]

Threshold value for the interrupt.

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