FPGA Program Flash

Flash storage for FPGA images on the T2 card is implemented in dual-QSPI mode (8 bits). The following signals comprise this interface:

Chip selects

RF_QSPI_LWR_CS# and RF_QSPI_UPR_CS#

Data

RF_QSPI_LWR_DQ[3:0] and RF_QSPI_UPR_DQ[3:0]

Clocks

RF_QSPI_LWR_CLK and RF_QSPI_UPR_CLK

Additional details are as follows:

• The dual-QSPI mode flash has been implemented with two 2 Gb SPI NOR flash devices (Micron MT25QU02GCBB8E12-0AAT).
• The MT25QU02GCBB8E12-0AAT NOR flash devices are automotive grade for thermal design reasons.
• The flash storage supports a user image and a fallback image.
• The T2 card is shipped with a fallback image that cannot be overwritten (the password is kept with AMD manufacturing).