L9663 datasheet(47/104 Pages) STMICROELECTRONICS

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L9663

Communication interface

103

Communication interface

As interface to the microcontroller, either the SPI interface or the direct interface shall be

used.

The following pins are used for SPI communication:



MOSI



MISO



SCLK



5.1

Device registers

The following registers are available for writing configuration data and reading information

data. Registers can be of 4 different types:



WO: writeable only



RO: readable only



R/W: both readable and writeable



RC : readable and cleared upon reading

Device configuration registers are marked with "PROG". These registers can only be written

before the microcontroller sends an EOP (End Of Programming) command through the

Direct Command Register (DCR).

The registers which have a special safety importance contain a parity bit (PAR) which must

be written by the μC with an odd parity. A periodic check (every 150 us) is done and if a

parity error is found on one of these registers the GBIT is set.

L9663 bảng dữ liệu(PDF) 47 Page - STMicroelectronics