L9680 datasheet(156/277 Pages) STMICROELECTRONICS

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SPI interfaces

L9680

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DocID029257 Rev 1

7.6.3

Remote sensor x current registers y (RSTHRx_y)

Remote sensor 0, base current and delta to calculate 1st top current (RSTHR0_L)

Remote sensor 1, base current and delta to calculate 1st top current (RSTHR1_L

Remote sensor 2, base current and delta to calculate 1st top current (RSTHR2_L

Remote sensor 3, base current and delta to calculate 1st top current (RSTHR3_L

Remote sensor 0 (only for WSS), delta to calculate 2nd top current (RSTHR0_H)

Remote sensor 1 (only for WSS), delta to calculate 2nd top current (RSTHR1_H

Remote sensor 2 (only for WSS), delta to calculate 2nd top current (RSTHR2_H

Remote sensor 3 (only for WSS), delta to calculate 2nd top current (RSTHR3_H

ID:

5C (RSTHR0_L)

5D (RSTHR1_L)

5E (RSTHR2_L)

5F (RSTHR3_L)

60 (RSTHR0_H)

61 (RSTHR1_H)

62 (RSTHR2_H)

63 (RSTHR3_H

Type:

Read:

5C00 (RSTHR0_L)

5D00 (RSTHR1_L)

5E00 (RSTHR2_L)

5F00 (RSTHR3_L)

6000 (RSTHR0_H)

6100 (RSTHR1_H)

6200 (RSTHR2_H)

6300 (RSTHR3_H

Write:

MOSI

-X

MISO_RS

DELTA 1ST TOP [9:0]

BASE CURRENT [9:0]

MISO_RS

DELTA 2ND TOP [9:0]

BASE CURRENT [9:0]

$A1 $A1 $A1

PSI5/WSS base current measured by internal converter (93.75 μA ±9% each

LSB).

DELTA 1ST TOP

[19:10]

$103 $103 $103 PSI5/WSS delta measured by internal converter respect to base current

(93.75 μA ±9% each LSB) to get top current.

Low threshold = base current+(DELTA_1ST_TOP/2) in case of WSS or PSI5

without current averaged algorithm (bit 4 of RSRCx register equal to 0).

Low threshold = base current+(DELTA_1ST_TOP) in case of PSI5 with

current averaged algorithm (bit 4 of RSRCx register equal to 1).

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