DRV8860_15 Datasheet, PDF(17/40 Page) Texas Instruments – DRV8860x 38-V 8-Channel Serial Interface Low-Side Driver

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DRV8860_15 Datasheet, PDF (17/40 Pages) Texas Instruments – DRV8860x 38-V 8-Channel Serial Interface Low-Side Driver

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DRV8860, DRV8860A

SLRS065D â SEPTEMBER 2013 â REVISED OCTOBER 2015

Programming (continued)

8.5.1.3 Special Command

Besides output ON/OFF control and fault status reading back, DRV8860 has special functions to make system

more robust or power efficient. These functions will need special command to initiate the device or configure the

internal registers.

There are 5 Special Commands:

1. Write Control Register command

2. Read Control Register command

3. Read Data Register command

4. Fault Register Reset command

5. PWM Start command

Special wave form pattern on CLK and LATCH pin will issue the special command, as below

LATCH

CLKxxxxxxxxxxxx

1

Part 1

123456

123456

Part 2

Part 3

Figure 15. Special Command

123

Part 4

SPECIAL COMMAND

Write Control Register

Read Control Register

Read Data Register

Fault Register Reset

PWM Start

Part 1

1

1

1

1

1

CLK CYCLES IN EACH PART

Part 2

Part 3

2

2

4

2

4

4

2

4

6

6

Part 4

3

3

3

3

3

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