L9678P datasheet(107/203 Pages) STMICROELECTRONICS

107 / 203 page

DocID029274 Rev 3

107/203

L9678P, L9678P-S

SPI interface

202

Updated by SSM_RESET or SPI write while in DIAG state

0 First 16 bits of SPI MISO frame used for Response Mask and Data



Mask bit-wise AND

1 Last 16 bits of SPI MISO frame used for Response Mask and Data



Mask bit-wise AND

LIM SELx

0 Data range limit select for safing record x - When enabled, determines the

range limit used for incoming sensor data

Updated by SSM_RESET or SPI write while in DIAG state

0 8-bit data range limit - incoming |data| >120d is not recognized as valid



data

1 10-bit data range limit - incoming |data| > 480d is not recognized as



valid data

LIM Enx

0 Data range limit enable for safing record x

Updated by SSM_RESET or SPI write while in DIAG state

0 Data range limit disabled

1 Data range limit enabled

COMBx

0 Combine function enable for safing record x

Updated by SSM_RESET or SPI write while in DIAG state

0 Combine function disabled

1 Combine function enabled

For record pairs = x,x+1, the comparison for record x uses |data(x) +



data(x+1)| and the comparison for record x+1 uses |data(x) - data(x+1)|

Record pairs are 1,2 and 6,7

DWELLx[1:0]

00 Safing dwell extension time select for safing record x

Updated by SSM_RESET or SPI write while in DIAG state

00 2048 ms

01 256 ms

10 32 ms

11 0 ms

ARM2x

0 ARM2INT select for safing record x - correlates safing result to ARM2INT

Updated by SSM_RESET or SPI write while in DIAG state

0 Safing record x not assigned to ARM2INT

1 Safing record x assigned to ARM2INT

ARM1x

0 ARM1INT select for safing record x - correlates safing result to ARM1INT

Updated by SSM_RESET or SPI write while in DIAG state

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