Data Sheet
132
Rev. 1.00
2017-07-31
TLE9262BQXV33
Serial Peripheral Interface
16.5
SPI Control Registers
READ/WRITE Operation (see also
Chapter 16.3
):
• The ‘POR / Soft Reset Value’ defines the register content after POR or SBC Reset.
• The ‘Restart Value’ defines the register content after SBC Restart, where ‘x’ means the bit is unchanged.
• One 16-bit SPI command consist of two bytes:
- the 7-bit address and one additional bit for the register access mode and
- following the data byte
The numbering of following bit definitions refers to the data byte and correspond to the bits D0...D7 and to
the SPI bits 8...15 (see also figure before).
• There are three different bit types:
- ‘r’ = READ: read only bits (or reserved bits)
- ‘rw’ = READ/WRITE: readable and writable bits
- ‘rwh’ = READ/WRITE/Hardware: readable/writable bits, which can also be modified by the SBC hardware
• Reserved bits are marked as “Reserved” and always read as “0”. The respective bits shall also be
programmed as “0”.
• Reading a register is done byte wise by setting the SPI bit 7 to “0” (= Read Only).
• Writing to a register is done byte wise by setting the SPI bit 7 to “1”.
• SPI control bits are in general not cleared or changed automatically. This must be done by the
microcontroller via SPI programming. Exceptions to this behavior are stated at the respective register
description and the respective bit type is marked with a ‘h’ meaning that the SBC is able to change the
register content.
The registers are addressed wordwise.
