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4.10.2. EPCQ or EPCQ-A Flash Memory
The Intel® Cyclone® 10 LP FPGA Evaluation board has an Intel® 64 Mb EPCQ64 or 128 Mb EPCQ128A in-system programmable NOR flash for non-volatile storage of the FPGA configuration data, board information, test application data and user code space.
Depending on its revision, your board has one of two flash memory devices: EPCQ64 or EPCQ128A. To determine which device you have, refer to "Evaluation Board Revisions".
Although the quad-serial flash provided has a ×4 data width, the evaluation board has a ×1 data width because the Intel® Cyclone® 10 LP FPGA only supports an AS ×1 configuration scheme. Other data signals are tied to 3.3 V power required by the device datasheet.
The table below shows the memory map for this flash memory. This memory provides non-volatile storage for FPGA bit stream, Nios® II factory software and other information.
Block Description | Size (KB) | Address | Comments |
---|---|---|---|
Board Test System Scratch | 512 | 0x0073.0000 - 0x007A.FFFF | BTS System Testing |
Board Information | 64 | 0x0072.0000 - 0x0072.FFFF | Board Information |
Ethernet Option Bits | 64 | 0x0071.0000 - 0x0071.FFFF | MAC Address Information |
User Design Reset Vector | 64 | 0x0070.0000 - 0x0070.FFFF | Nios II Reset Vector Information |
Factory Software (ELF) | 4096 | 0x0030.0000 - 0x006F.FFFF | Software File |
Factory Hardware (sof) | 3072 | 0x0000.0000 - 0x002F.FFFF | SOF File |
Total | 7872 |
The signal connections between the Intel® Cyclone® 10 LP FPGA and flash comply with the AS ×1 configuration requirements.
Flash Pin Number | Schematic Signal Name | FPGA Pin Number | I/O Standard | Description |
---|---|---|---|---|
U2.16 | C10_AS_DCLK | U1.H1 | 3.3 V | FPGA Clock Output |
U2.7 | C10_AS_CSn | U1.D2 | 3.3 V | FPGA Chip Select Output |
U2.8 | C10_AS_DATA0 | U1.H2 | 3.3 V | FPGA Data Input |
U2.15 | C10_AS_ASDO | U1.C1 | 3.3 V | FPGA Data and Control Signals Output |