MC3630 Datasheet, PDF (69/83 Pages) –

MC3630 3-Axis Accelerometer
Preliminary Datasheet
(0x21) Drive Motion Y Register
This register controls the test mode which moves the sensor in the Y axis direction and
initializes specific hardware bits.
NOTE: Software must always write 0 to bits [6:4] and [1:0].
NOTE: Software must always write 1 to bit 7 after writing to register 0x20[0].
Bit
Addr
Name
7
6
5
4
3
2
1
0
POR Value R/W
0x21
DMY
1
0
0
0
DNY
DPY
0
0
(See table) RW
Mode (MCTLR[2:0] bits in MODE_C Register
0x10)
Read-back Value
SNIFF, CWAKE, SWAKE, TRIG
0x80
SLEEP, STANDBY
0x00
Table 34. Register 0x21 Read-Back Value
Bit
[1:0]
2
3
[6:4]
7
Name
Description
00
Reserved. Always write 0 to these bits.
DPY
0: Disabled (default)
1: Move the sensor in Y Positive direction
DNY
0: Disabled (default)
1: Move the sensor in Y Negative direction
000
Reserved. Always write 0 to these bits.
1
Reserved. Always write 1 to this bit.
Table 35. Drive Motion Y Register Settings
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