SCA3000 Series
Address: 14h
Register name: MODE, operation mode selection
Initial
Value
0
Bits
7
Mode
RW
Name
Description
BUF_EN
Output ring buffer
1 – Enabled
0 – Disabled (Buffer in power down)
6
RW
0
BUF_8BIT Output ring buffer data length
1 – Ring buffer is read in single 8 bit frame per
stored axis (8 bit mode)
0 – Ring buffer is read in two 8 bit frames per
stored axis (11 bit mode). Unused bits are
set to 0.
5
4
Reserved
RW
RW
0
FFD_EN
Free-fall detection
1 – Enabled
0 – Disabled (detection in power down)
Reserved
3
MODE_BITS
2:0
000
Selects SCA3000 series operation mode
000 – Normal measurement mode
010 – Optional measurement mode 1 (see Table 2)
001 – Optional measurement mode 2 (see Table 2)
011 – MD, Motion Detector
Other combinations are reserved
Address: 17h
Register name: I2C_RD_SEL, register address for I2C read operation
Initial
Value
00h
Bits
7:0
Mode
W
Name
ADDR
Description
Address of register to be read via I2C. Register is
used only for I2C read access.
Address: 18h
Register name: CTRL_SEL, Control register selector, UNLOCK REQUIRED
Initial
Value
000
Bits
Mode
Name
Description
7:5
4:0
RW
RW
Reserved
00000
SELECT
Indirect control registers,
select register address for read / write access:
00001 – I2C_DISABLE
00010 – MD_CTRL (Motion Detector control)
00011 – MD_Y_TH (Motion Detector Y-
threshold)
00100 – MD_X_TH (Motion Detector X-
threshold)
00101 – MD_Z_TH (Motion Detector Z-
threshold)
01011 – OUT_CTRL (Output control)
Other combinations are reserved
CTRL_SEL register works as an address pointer for registers listed below. When this register is
written the content of selected register is available for reading/writing from/to register CTRL_DATA.
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PRELIMINARY - Subject to changes
Doc.Nr. 8257300A.06
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Rev.A.06
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