SCA21X0 VTI [VTI technologies], SCA21X0 Datasheet - Page 25
SCA21X0
Manufacturer Part Number
SCA21X0
Description
VTI Automotive Digital Accelerometer Platform
Manufacturer
VTI [VTI technologies]
Datasheet
1.SCA21X0.pdf
(35 pages)
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4.2.6 dPAR-bit
4.2.7
4.2.8
VTI Technologies Oy
www.vti.fi
Fixed bits
Output data
dPAR bit is odd parity bit of 8bit data that is currently sent in the frame. Master checks this bit and
compares to received data. Using dPAR at least one bit errors in data transmission can be
detected.
Bits 6 and 7 are always fixed in MISO line. Bit 6 should always be '0' and bit 7 always '1'
1. Reset stage: When component is in reset or under voltage state, PORST bit in SPI frame and
2. Saturation: When acceleration exceeds measurement range, the output data is saturated to
3. Self-diagnostic failure: In SCA21X0 and 31X0 the ST bit in SPI frame is set when memory
CTRL.PORST bit is set. Furthermore, all register values are set to 00'hex.
specified positive or negative full-scale.
diagnostic or signal path diagnostic functions fail. Furthermore acceleration output data is
forced to 7FFF'hex if memory diagnostic fails or to FFFF'hex if signal path diagnostic functions
(STC/STS) fail.
Doc. Nr. 82 694 00 C
SCA8X0/21X0/3100 Series
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