FXOS8700CQ datasheet(77/86 Pages) FREESCALE

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Freescale Semiconductor, Inc.

9.17.7

M_VECM_THS_MSB (0x6A) register

9.17.8

M_VECM_THS_LSB (0x6B) register

9.17.9

M_VECM_CNT (0x6C) register

9.17.10 M_VECM_INITX_MSB (0x6D) register

m_vecm_dbcntm

m_vecm_ths[14:8]

0b0000000

Figure 128. M_VECM_THS_MSB register

Table 99. M_VECM_THS_MSB bit descriptions

Field

Description

m_vecm_dbcntm

Magnetic vector magnitude debounce counter mode selection:

0: The debounce counter is decremented by 1 whenever the current vector magnitude result is below the threshold

set in M_VECM_THS.

1: The debounce counter is cleared whenever the current vector magnitude result is below the threshold set in

M_VECM_THS.

m_vecm_ths[14:8]

Seven most significant bits of 15-bit unsigned magnetic vector magnitude threshold. Resolution is 0.1

μT/LSB.

m_vecm_ths[7:0]

0b00000000

Figure 129. M_VECM_THS_LSB register

m_vecm_cnt[7:0]

0b00000000

Figure 130. M_VECM_CNT register

Table 100. M_VECM_CNT bit description

Field

Description

m_vecm_cnt[7:0]

Magnetic vector magnitude debounce count value. The debounce timer count period is set by the current ODR. For

example, with M_VECM_CNT = 15 and an ODR of 100 Hz selected, the debounce is set to 150 ms. When operating

in hybrid mode, the effective ODR is reduced by a factor of two, making the debounce time for this example 300 ms.

m_vecm_initx[15:8]

0b00000000

Figure 131. M_VECM_INITX_MSB register

Table 101. M_VECM_INITX_MSB bit description

Field

Description

m_vecm_initx[15:8]

MSB of signed 16-bit initial X-axis value used by the magnetic vector magnitude function when

M_VECM_CFG[m_vecm_initm] = 1.

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