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Altera_Forum's avatar
Altera_Forum
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19 years ago

why 3-wire spi have 4-prot ??

Dear ALL I want to use the spi in sopc builder . but I find it have 4 paort . i can connect it to my extern device . I want to know how to do it . thanks!
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

This may be a stupid question, but did you check the right side of the processor symbol created in SOPC builder?

Input signals are located on the left side of the symbol and output signals on the right side.

Slave input signals:

- sclk

- ss_n

- mosi

Slave output signals:

- miso

Otherwise, are there any special parameter for SPI slave in SOPC builder? I never implemented a SPI slave, only masters.

IzI