Data Sheet

ICM-20948
Document Number: DS-000189 Page 64 of 89
Revision: 1.3
10.14 ACCEL_WOM_THR
Name: ACCEL_WOM_THR
Address: 19 (13h)
Type: USR2
Bank: 2
Serial IF: R/W
Reset Value: 0x00
BIT
NAME
FUNCTION
7:0
WOM_THRESHOLD[7:0]
This register holds the threshold value for the Wake on Motion Interrupt for ACCEL
x/y/z axes. LSB = 4 mg. Range is 0 mg to 1020 mg.
10.15 ACCEL_CONFIG
Name: ACCEL_CONFIG
Address: 20 (14h)
Type: USR2
Bank: 2
Serial IF: R/W
Reset Value: 0x01
BIT NAME FUNCTION
7:6
-
Reserved.
5:3
ACCEL_DLPFCFG[2:0]
Accelerometer low pass filter configuration as shown in Table 18.
2:1
ACCEL_FS_SEL[1:0]
Accelerometer Full Scale Select:
00: ±2g
01: ±4g
10: ±8g
11: ±16g
0
ACCEL_FCHOICE
0: Bypass accel DLPF.
1: Enable accel DLPF.
ACCEL_FCHOICE ACCEL_DLPFCFG
OUTPUT
3DB BW
[HZ]
NBW [HZ] RATE [HZ]
0 x 1209 1248 4500
1 0 246.0 265.0
1125/(1+ACCEL_SMPLRT_DIV)Hz where
ACCEL_SMPLRT_DIV is 0, 1, 2,…4095
1 1 246.0 265.0
1125/(1+ACCEL_SMPLRT_DIV)Hz where
ACCEL_SMPLRT_DIV is 0, 1, 2,…4095
1 2 111.4 136.0
1125/(1+ACCEL_SMPLRT_DIV)Hz where
ACCEL_SMPLRT_DIV is 0, 1, 2,…4095
1 3 50.4 68.8
1125/(1+ACCEL_SMPLRT_DIV)Hz where
ACCEL_SMPLRT_DIV is 0, 1, 2,…4095
1 4 23.9 34.4
1125/(1+ACCEL_SMPLRT_DIV)Hz where
ACCEL_SMPLRT_DIV is 0, 1, 2,…4095
1 5 11.5 17.0
1125/(1+ACCEL_SMPLRT_DIV)Hz where
ACCEL_SMPLRT_DIV is 0, 1, 2,…4095
1 6 5.7 8.3
1125/(1+ACCEL_SMPLRT_DIV)Hz where
ACCEL_SMPLRT_DIV is 0, 1, 2,…4095
1 7 473 499
1125/(1+ACCEL_SMPLRT_DIV)Hz where
ACCEL_SMPLRT_DIV is 0, 1, 2,…4095
Table 18. Accelerator Configuration
The data rate out of the DLPF filter block can be further reduced by a factor of
1.125 kHz/(1+ACCEL_SMPLRT_DIV[11:0]) where ACCEL_SMPLRT_DIV is a 12-bit integer.