L9779WD-SPI datasheet(131/141 Pages) STMICROELECTRONICS

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L9779WD-SPI

Functional description

140

Watchdog related SPI registers

SPI registers WDA_RESPTIME,REQULO, REQUHI, RST_AB1_CNT are defined as here

below:

DIA_REG13/WDA_RESPTIME

Diagnostic register 13

Address:

1 0000

Subaddress:

0000 1101

Type:

R (Read only)

Reset:

0011 1111b (reset source: Bit 5-0: RST_UV, RST_PRL; Bit 6-7: RST_UV)

DIA_REG14/REQULO

Diagnostic register 14

Address:

1 0000

Subaddress:

0000 1110

Type:

R (Read only)

Reset:

1110 0000b (reset source: Bit 6-4: RST_UV, RST_PRL; Bit 7, 3-0: RST_UV)

43210

RESPTIME5

RESPTIME4

RESPTIME3

RESPTIME2

RESPTIME1

RESPTIME0

[7] 0

[6] 0

[5-0] RESPTIME (5-0): Response-time = (1+ 101*RESPTIME(5-0)) * 1/f_clk with f_clk = 64kHz

The error counter is incremented by one on a controller write access to this register!

not locked by command LOCK

<RESPTIME(5..0)> may be written by the command WR_RESPTIME

43210

WDA_INT

ERR_CNT2

ERR_CNT1

ERR_CNT0

REQU3

REQU2

REQU1

REQU0

[7] WDA_INT: '1': ERROR COUNTER > 4

[6-4] ERR_CNT (2-0): value of the ERROR COUNTER

[3-0] REQU (3-0): 4-bit question

L9779WD-SPI Datasheet(PDF) 131 Page - STMicroelectronics

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