Serial Flash Mailbox Client Intel® FPGA IP User Guide

ID 683509
Date 9/26/2022
Public

Reading Flash Memory

Here are the steps to read flash memory:
# Write Offset 4 to request access to the flash memory device.
master_write_32 $m $AsmiOpen 0x1

# Write Offset 3 to select the 1st flash memory device attached to the IP.
master_write_32 $m $AsmiChipSelect 0x0

# Writing the address argument to Offset 24 (specify the device address for read operation to 0x03FF0000)
master_write_32 $m $AsmiReadAddr 0x03FF0000

# Writing the command argument to Offset 25 (specify the number of words to read from device is 1)
master_write_32 $m $AsmiReadNumbWords 0x1

# Writing the command argument to Offset 23 (Specify 0x2 to flush out data inside read FIFO)
master_write_32 $m $AsmiReadOp 0x2

# Writing the command argument to Offset 23 (Specify 0x1 to perform read operation)
master_write_32 $m $AsmiReadOp 0x1


# Read Offset 26 to determine the fill level of the internal read data FIFO.
master_read_32 $m $AsmiReadFifoLevel 1

# Read the data stored in read data FIFO via the base address of rd_mem in the IP.
master_read_32 $m $RD_MEM 1

# Write Offset 5 to close access to the flash memory device.
master_write_32 $m $AsmiClose 0x1

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