L9945 datasheet(57/151 Pages) STMICROELECTRONICS

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COMMAND 4

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_04

Description:

OUT4 configuration, P&H1 configuration, H-Bridge 1 enable

[31:28] C: Command 4

0100

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

0: Write & request read

1: Request read only

[26] HB1_CONFIG: Configures CH1-CH2-CH3-CH4 for H-bridge1 operation

0: H-bridge not configured

1: CH1-CH4 configured as H-bridge

[25] PH1_DIAG_STRATEGY: OL masking strategy to prevent false OL assertion in P&H1 configuration

0: "No OL/STG /STB" failure reported

1: "No diagnostic done" reported

[24] PH1_CONFIG: Configures CH1-CH4 for Peak and Hold1 operation

0: Peak and Hold1 not configured

1: Peak and Hold1 configured

[23:22] TDIAG_CONFIG_04: OFF state diagnostic blanking/filter timer for output 04. It has no effect if HB1_config =1 &

HB1_tdiag_ext_config = 0

00: 25.6 µs

01: 61.2 µs

10: 105.6 µs

11: 150 µs

[21] OC_READ_04: Selection of the OC threshold to read. Fixed threshold or actual threshold.

0: Read fixed OC threshold

1: Read actual OC threshold

[20:15] OC_CONFIG_04: Selection of over current detection threshold. 6 bit to code for the OC detection threshold

See Table 40

[14:13] OC_TEMP_COMP_04: Over current detection with temperature compensation (see note of Table 30. SPI MOSI list)

00: No OC compensation

01: ΔT < 60 °C

10: ΔT < 40 °C

11: ΔT < 25 °C

L9945

SPI MOSI/MISO list

DS12275 - Rev 8

page 57/151

L9945 데이터시트(PDF) 57 Page - STMicroelectronics