DRV8808 Datasheet, PDF (13/38 Pages) Texas Instruments – COMBINATION MOTOR DRIVER WITH DC-DC CONVERTER

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DRV8808
SLVS857A – DECEMBER 2009 – REVISED AUGUST 2011
nSLEEP
ENABLEA /
STROBE
SETUP REGISTER
EXTENDED SETUP REGISTER
When STROBE goes HI
SDATA
DATA SHIFT REGISTER
SCLK
Register is initialized after power up reset
Register isNOT initialized after power up rese.t
An SPI write command is recommende.d
A. It is recommended that after initial power up sequence, a serial command be performed to clear undefined data in the
internal shift register. This will help avoid latching undefined data into SETUP and EXTENDED SETUP registers.
SETUP and EXTENDED SETUP registers are properly initialized during power up, but internal shift register is not
initialized.
Figure 4. Serial Peripheral Interface Block Diagram
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