SCA3000 Series
Address: 16h
Register name: INT_STATUS, interrupt status register (all interrupts that are available in current
operation mode)
Initial
Value
0
Bits
7
Mode
R
Name
Description
BUF_FULL Output ring buffer is ¾ full
1 – Ring buffer is ¾ full
0 – Ring buffer is not full
BUF_HALF Output ring buffer is ½ full
1 – Ring buffer is ½ full
6
R
0
0 – Ring buffer is not full
Reserved
5:4
3
R
R
0
FFD
MD
Free-fall detection
1 – Free-fall detected (0 g acceleration)
0 – Free-fall not detected
Motion detector triggered channel indication
1xx – Trigger on Y-axis
2:0
000
x1x – Trigger on X-axis
xx1 – Trigger on Z-axis
3.4 Configuration Registers
SCA3000 configuration register (marked with 'Conf' in Table 5) contents and bit definitions are
described in this section. Configuration registers are used to configure SCA3000 operation and the
operation parameters.
Address: 00h
Register name: REVID, ASIC revision ID number tied in metal
Initial
Value
Bits
Mode
Name
Description
7:4
3:0
R
R
REVMAJ
REVMIN
Major revision number
Minor revision number
Address: 02h
Register name: STATUS, status register
Initial
Value
Bits
Mode
R
Name
Description
7:6
5
Reserved
0
LOCK
Status of lock register
0 – Lock is closed
1 – Lock is open
Reserved
EEPROM checksum error
1 – EEPROM checksum error
0 – No error
4:2
1
R
R
0
0
CSME
0
SPI_FRAME SPI frame error. Bit is reset, when next correct SPI
frame is received (only for products with SPI bus).
1 – SPI frame error
0 – No error
VTI Technologies Oy
www.vti.fi
PRELIMINARY - Subject to changes
Doc.Nr. 8257300A.06
20/ 45
Rev.A.06
VTI [ VTI TECHNOLOGIES ]
