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ECSPI - MISO MOSI

Question asked by Mathias Neusch on Nov 22, 2013
Latest reply on Nov 25, 2013 by Yuri Muhin

Hello,

 

i woud like to connect two i.MX6 with SPI. (SCLK, MISO, MOSI, SS)

 

Reference Manual

[...]

21.4.2 Slave Mode

In this configuration, Chip Select (SS) becomes an input signal, and is used to control

data transfers through the Shift register, as well as to load/store the data FIFO.

[...]

 

-> Chip Select connected directly

 

But what i have to do with MISO/MOSI? Is crossing required?

 

[...]

ECSPI4_MISO (MISO) Master data in; slave data out EIM_D22
ECSPI4_MOSI (MOSI) Master data out; slave data in EIM_D28

[...]

 

i.MX6 Master - i.MX6 Slave

EIM_D22 (TX)  -  EIM_D28 (RX)

EIM_D28 (RX)  - EIM_D22 (TX)

 

or is no crossing required?

 

i.MX6 Master - i.MX6 Slave

EIM_D22 (TX)  -  EIM_D22 (RX)

EIM_D28 (RX)  - EIM_D28 (TX)

 

Thanks for any Help

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