L9779WD datasheet(139/170 Pages) STMICROELECTRONICS

139 / 170 page

DocID027452 Rev 5

139/170

L9779WD

Functional description

169

MRD_REACT

CSB

: command selection bit - always '1'

C(5...0) : command bit

CD(7...0): command data bit

This command allows to the uC to turn on the MRD if it was switched off due to over current.

RD_SINGLE

CSB

: command selection bit - always '1'

C(5...0) : command bit

CD(7...0): command data bit to select the register to be read. NB: CD(7..6) must be 0.

This command allows to read one register at a time. The register to be read is specified

through the command data field and is encoded with a Hamming distance at least of 2

according to the following table:

Table 69. MRD_REACT

Command

CSB

C(5..0)

CD(7..0)

MRD_REACT

1 0 0 1 1 1

X X X X X X X X

Table 70. RD_SINGLE

Command

CSB

C(5..0)

CD(7..0)

RD_SINGLE

1 0 1 0 0 0

0 0 CD(5..0)

Table 71. Register through the command data field

CD(5:0)

Description

000011

R CONFIG_REG1

MRD_OT_DIS, OUT8 short to VB filter time and threshold

000101

R CONFIG_REG2

LS_IGN_OFF, OUT9 short to VB filter time and threshold

000110

R CONFIG_REG3

VRS edge and feedback position selection

001001

R CONFIG_REG4

lock status/slew-rate/upstream clock ratio/off state

diagnosis/power latch mode config

001010

R CONFIG_REG5

VRS config/MSC monitoring status/OUT21-28 config

001100

R CONFIG_REG6

PSOFF/power latch mode enable flag/reset generation

flag/can error enable flag

001111

R CONFIG_REG7

low battery setting status to OUT 13,14,24,25/TD mask

type/IGN diagnosis type

111001

R CONFIG_REG8

WDA RESP

111010

R CONFIG_REG9

RESPTIME

111100

R CONFIG_REG10

CPS CONF

010001

R DIA_REG1

diagnosis bit of OUT 1,2,3,4

L9779WD датащи(PDF) 139 Page - STMicroelectronics

L9779WD датащи(HTML) 139 Page - STMicroelectronics

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

датащи скачать

ссылки URL