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Altera_Forum
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16 years ago

is there any SOPC and NIOS2 design example of eeprom at93c46

in my design , i used one chip of eeprom: atmel 's at93c46, this memory 's interface looks like SPI interface. it has CS, CLK,DO and DI , but after reading it pdf document. i found it does accord wit...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

If you open your sopc builder have a look at

Component Library -> Interface Protocols -> Serial -> SPI (3 Wire Serial)

just add and the configuration dialog opens.

Just set it to master, Data width 8 bit MSB first, Clock polarity 0 Clock Phase 0

assuming the added spi was named as spi_0, after generation you should get

Input MISO_to_the_spi_0 connect to AT93C46_DO

Output MOSI_from_the_spi_0 connect to AT93C46_DI

Output SCLK_from_the_spi_0 connect to AT93C46_SK

Output SS_n_from_the_spi_0 connect to AT93C46_CS via inverter

now you have connected the Atmel 93C46 to the SPI available via Nios SOPC