TLE8110ED datasheet(39/74 Pages) INFINEON

39 / 74 page

Data Sheet

Rev. 1.0

2018-03-07

TLE8110ED

Smart Multichannel Low Side Switch with Parallel Control and SPI Interface

16 bit SPI Interface

11.1

Description 16 bit SPI Interface

The diagnosis and control interface is based on a serial peripheral interface (SPI).

The SPI is a full duplex synchronous serial slave interface, which uses four lines: S_SO, S_SI, S_CLK and S_CS.

Data is transferred by the lines S_SI and S_SO at the data rate given by S_CLK. The falling edge of S_CS

indicates the beginning of a data access. Data is sampled in on line S_SI at the falling edge of S_CLK and shifted

out on line SO at the rising edge of SCLK. Each access must be terminated by a rising edge of S_CS. A modulo

8 counter ensures that data is taken only, when a multiple of 8 bit has been transferred. If in one transfer cycle

not a multiple of 8 bits have been counted, the data frame is ignored. The interface provides daisy chain

capability.

Figure 24

16 bit SPI Interface

The SPI protocol is described in Chapter “Control of the device”. Concerning Reset of the SPI, please refer to

the chapter “Reset”.

11.2

Timing Diagrams

Figure 25

SPI timing diagram

MSB

LSB

S_SO

S_SI

S_CS

S_CLK

time

SPI.vsd

S_CS

S_CLK

S_SI

CS lead

CStd

CSlag

t SCLKh

t SCLKl

t SCLKp

t SIsu

t SIh

S_SO

SOdis

0.7Vdd

0.2Vdd

0.7Vdd

0.2V

0.7Vdd

0.2Vdd

0.7Vdd

0.2Vdd

Timing SPI.vsd

SOv

SO(en)

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