SCA3000 Series
3
Addressing Space
The SCA3000 register contents and bit definitions are described in more detail in the following
sections.
3.1 Register Description
The SCA3000 addressing space is presented in Table 5 below.
Table 5. List of registers.
Reg.
type
Conf
Mode
(R, W, RW, IA)
R
Addr.
Name
Description
Locked
00h
01h
REVID
ASIC revision ID number
Reserved
-
-
02h
STATUS
Status register
R
Conf
03h
Reserved
04h
X_LSB
X_MSB
Y_LSB
Y_MSB
Z_LSB
Z_MSB
X-axis LSB frame
X-axis MSB frame
Y-axis LSB frame
Y-axis MSB frame
Z-axis LSB frame
Z-axis MSB frame
R
R
R
R
R
R
Output
Output
Output
Output
Output
Output
05h
06h
07h
08h
09h
0Ah ... 0Eh
0Fh
Reserved
Ring buffer output register
-
-
BUF_DATA
R
Output
10h ... 11h
12h
Reserved
Temperature LSB frame
Temperature MSB frame
TEMP_LSB
TEMP_MSB
MODE
R
R
Output
Output
Conf
13h
14h
Operating mode selection,
control and configuration for:
- mode selection
RW
- output buffer
- free-fall detection
15h
16h
BUF_COUNT
INT_STATUS
Count of unread data
samples in output buffer
Interrupt status register:
- output buffer is not full, ½
full or ¾ full
R
R
Output
Output
- free-fall detected / not
detected
- information of which axis
triggered motion
17h
18h
I2C_RD_SEL
CTRL_SEL
Register address for I2C read
operation
Register address pointer for
indirect control registers
RW
RW
Conf
Conf
x
-
19h
...
Reserved
1Dh
1Eh
UNLOCK
Unlock register
Reserved
RW
Conf
1Fh ... 20h
-
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