L9679P datasheet(143/272 Pages) STMICROELECTRONICS

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DocID029275 Rev 1

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L9679P

SPI interfaces

271

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)|

Combine function is not available for 32 bits safing records

(x=1,3,5,7,9,11 for high-end; x=1,3,5,7 for mid-end);

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

000

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

000

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

Updated by SSM_RESET or SPI write while in DIAG state

0 Safing record x not assigned to ARM1INT

1 Safing record x assigned to ARM1INT

CSx[2:0]

000

000 SPI Monitor CS select for safing record x

Updated by SSM_RESET or SPI write while in DIAG state

000 None selected for record x

001 SAF_CS0 selected for record x

010 SAF_CS1 selected for record x

011 SAF_CS2 selected for record x

100 SAF_CS3 selected for record x

101 CS_RS selected for record x

110 None selected for record x

111 None selected for record x

IFx

SPI format select for safing record x - selects response protocol for SPI

monitor.

Updated by SSM_RESET or SPI write while in DIAG state

0 Out of frame response for record x

1 In Frame response for record x

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