TLE75080-EMD Datasheet, PDF (51/67 Pages) Infineon Technologies AG – SPI Driver for Enhanced Relay Control

TLE75080-EMD
Serial Peripheral Interface (SPI)
chain configuration, the data shifted out at device 1 has been shifted in to device 2. When using three devices in
daisy chain, several multiples of 8 bits have to be shifted through the devices (depending on how many devices
with 8 bit SPI and how many with 16 bit SPI). After that, the MCSN line must turn “high” (see Figure 25).
MI
MO
MCSN
MCLK
SO device 3
SI device 3
SO device 2 SO device 1
SI device 2 SI device 1
Figure 25 Data Transfer in Daisy Chain Configuration
SPI_DaisyChain_2.emf
10.3
Timing Diagrams
CSN
t CSN(lead)
SCLK
SI
SO
t SO(en)
t_{SCLK(P )}
t_{SCLK (H)}
t_{SCLK (L)}
t_{SI (su)}
t _{SI (h)}
tSO( v )
Figure 26 Timing Diagram SPI Access
t CSN(lag)
tC SN ( td )
V CSN(H)
V _CSN(L)
V SCLK(H)
V SCLK(L)
V _{SI (H)}
V _{SI (L)}
tSO (dis)
V _SO(H)
V SO(L)
SPI _Timings.emf
Data Sheet
51
Rev. 1.0, 2016-06-22