ASM330LXH datasheet(25/56 Pages) STMICROELECTRONICS

部件名	ASM330LXH

功能描述	Automotive inertial module: 3D accelerometer and 3D gyroscope

PDF	56 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

25 / 56 page

DocID027411 Rev 3

25/56

ASM330LXH

Digital main block

3.3

Level-sensitive/edge-sensitive/impulse-sensitive data enable

The ASM330LXH allows external trigger level recognition by enabling the EXTRen, LVLen

and IMPen bits in CTRL6_G (15h) only when both the accelerometer and gyroscope are

working. Three different modes can be used: level-, edge- or impulse-sensitive trigger.

Figure 14. Trigger stamping

3.3.1

Level-sensitive trigger stamping

A level sensitive trigger can be enabled by setting the LVLen bit to ‘1’ in CTRL6_G (15h)

while the EXTRen bit in CTRL6_G (15h) and the IMPen bit in CTRL6_G (15h) have to be

set to ‘0’.

Once enabled, the G_EN level replaces the LSB of the X, Y or Z axes, configurable through

the Xen, Yen, Zen bits in CTRL10_C (19h). Data is stored inside the FIFO with the

internally-selected ODR.

Table 9. Trigger stamping mode

LVLen

EXTRen

IMPen

Trigger stamping mode

Level-sensitive trigger

Edge-sensitive trigger

Impulse-sensitive trigger

ASM330LXH 数据表(PDF) 25 Page - STMicroelectronics