L9945 datasheet(49/151 Pages) STMICROELECTRONICS

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COMMAND 1

Frame partitioning

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

OC_CONFIG_01

Description:

OUT1 configuration and H-Bridge 1 diagnostic time

[31:28] C: Command 1

0001

[27] R/W: Bit to read/write configuration

0: Write & request read

1: Request read only

[25:26] HB1_DEAD_TIME: H-bridge1 dead time to avoid cross conduction

00: 1 µs

01: 2 µs

10: 4 µs

11: 8 µs

[24] HB1_TDIAG_EXT_CONFIG: Selection of tdiag timers for H-bridge 1. This function only applies when HB1_config = 1

0: H-bridge tdiag timers for HB1. The programmed TDIAG_CONFIG_01 will be extended to CH2. CH3 and CH4.

1: Standard tdiag timers for HB1. The programmed TDIAG_CONFIG_01 is valid only for CH1, while CH2, CH3 and CH4 must

be set individually.

[23:22] TDIAG_CONFIG_01:

H-bridge 1 OFF state diagnostic blanking/filter timer. This values are valid only when HB1_tdiag_ext_config = 0 & HB1_config

= 1.

00: 11.2 µs

01: 28.9 µs

10: 40 µs

11: 51.2 µs

OFF state diagnostic blanking/filter timer for CH1. It is valid for HB1 only when HB1_tdiag_ext_config = 1 & HB1_config = 1

00: 25.6 µs

01: 61.2 µs

10: 105.6 µs

11: 150 µs

[21] OC_READ_01: Selection of the OC threshold to read. Fixed threshold or actual threshold.

0: Read fixed OC threshold

1: Read actual OC threshold

L9945

SPI MOSI/MISO list

DS12275 - Rev 8

page 49/151

L9945 데이터시트(PDF) 49 Page - STMicroelectronics