Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

Preview PDF HTML

L9679P Datasheet(PDF) 192 Page - STMicroelectronics

No. de pieza L9679P
Descripción Electrónicos  Automotive advanced airbag for mid/high end applications and cut-off battery IC
PDF  279 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679P Datasheet(HTML) 192 Page - STMicroelectronics

Back Button L9679P Datasheet HTML 188Page - STMicroelectronics L9679P Datasheet HTML 189Page - STMicroelectronics L9679P Datasheet HTML 190Page - STMicroelectronics L9679P Datasheet HTML 191Page - STMicroelectronics L9679P Datasheet HTML 192Page - STMicroelectronics L9679P Datasheet HTML 193Page - STMicroelectronics L9679P Datasheet HTML 194Page - STMicroelectronics L9679P Datasheet HTML 195Page - STMicroelectronics L9679P Datasheet HTML 196Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 192 / 279 page
background image
Safing logic
L9679P
192/279
DS11627 Rev 7
12.2
SPI sensor data decoding
Sensor data is regularly communicated with the main microcontroller through multiple SPI
messages. The L9679P monitors SPI traffic on MISO_RS bus. Since not all communications
between sensors and the microcontroller contain data, it is important for the decoder to
properly sort the communications and extract only the targeted data. The solution involves
defining specific masking functions, contained within independent safing records,
programmed by the user. The following figures detail the SPI message decoding methodology
and the ensuing comparisons of valid sensor data to the programmed thresholds.
Figure 50. Safing engine – 32-bit message decoding flow chart
i=1
CC[i] = 0?
CS[i] =
cs_active?
IF[i] = 1?
N
Y
Y
N
Y
match[i]=1
matchCC[i]=1
match[i]=0
i++
Y
N
N
i = N?
Y
N
Outputs to VALDAT function :
dataresult[i]
req_ok[i]
match[i]
A
B
EN_SAF(i)
= 1?
Y
N
MSGDEC32
SPIFLDSEL[i]?
RESPTARG[i]=
1st16[MISO]&
RESPMASK[i]
RESPTARG[i]=
2nd16[MISO]&
RESPMASK[i]
1st16
req_ok[i]
= 1?
N
Y
2nd16
dataresult[i] =
1st16[MISO] &
DATAMASK [i]
dataresult[i] =
2nd[MISO] &
DATAMASK [i]
N
Y
REQTARG[i]=
MS16[MOSI]&
REQMASK[i]?
Y
N
match[i]=0
match[i]=0
Y
N
SPIFLDSEL[i]?
RESPTARG[i]=
1st16[MISO]&
RESPMASK[i]
RESPTARG[i]=
2nd16[MISO]&
RESPMASK[i]
1st16
2nd16
dataresult[i] =
1st16[MISO] &
DATAMASK [i]
dataresult[i] =
2nd[MISO] &
DATAMASK [i]
N
Y
match[i]=0
req_ok[i]=0
match[i]=0
req_ok[i]=0
req_ok[i]=1
req_ok[i]=0
REQTARG[i]=
MS16[MOSI]&
REQMASK[i]?
Y
N
match[i]=1
matchCC[i]=1
req_ok[i]=0
i = Safing Record index:
1: SR1
2: SR2
3: SR3
4: SR4
N=5 (L9678)
N=10 (L9679)
N=14 (L9680)
GAPGPS02292



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Descarga

Go To PDF Page


Enlace URL



¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Enlace a la hoja de datos    |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com