DRV8305-Q1_16 Datasheet, PDF (35/54 Pages) Texas Instruments – Three-Phase Automotive Gate Driver

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DRV8305-Q1
SLVSD12A – MAY 2015 – REVISED MARCH 2016
Programming (continued)
The SPI input data (SDI) control word is 16 bits long and consists of the following format:
• 1 read or write bit W [15]
• 4 address bits A [14:11]
• 11 data bits D [10:0]
The SPI output data (SDO) word response word is 11 bits long (first 5 bits are don't cares). It contains the
content of the register being accessed.
The MSB of the SDI word (W0) is the read/write bit. When W0 = 0, the input data is a write command. When W0
= 1, the input data is a read command.
For a write command: The response word is the data currently in the register being written to.
For a read command: The response word is the data currently in the register being read.
Table 7. SPI Input Data Control Word Format
R/W
ADDRESS
DATA
Word Bit B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Command W0 A3 A2 A1 A0 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Table 8. SPI Output Data Response Word Format
DATA
Word Bit B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Command X
X
X
X
X D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
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