Visible to Intel only — GUID: sss1440053543732
Ixiasoft
Visible to Intel only — GUID: sss1440053543732
Ixiasoft
3.2. AS Configuration
In AS configuration schemes, the SDM block in the Agilex™ 5 device controls the configuration process and interfaces. The serial flash configuration device stores the configuration data. During AS Configuration, the SDM first powers on with the boot ROM. Then, the SDM loads the initial configuration firmware from AS x4 flash. After the configuration firmware loads, this firmware controls the remainder of the configuration process, including I/O configuration and FPGA core configuration. Designs including an HPS, can use the HPS to access serial flash memory after the initial configuration.
The AS configuration scheme supports AS x4 (4-bit data width) mode only.
Mode | Data Width (bits) | Max Clock Rate | Max Data Rate | MSEL[2:0] | |
---|---|---|---|---|---|
Active | Active Serial (AS) | 4 |
166 MHz | 664 Mbps | Fast mode - 001 Normal mode - 011 |
Configuration Function | Pin Type | Direction | Powered by |
---|---|---|---|
nSTATUS | SDM I/O | Output | VCCIO_SDM |
nCONFIG | SDM I/O | Input | VCCIO_SDM |
MSEL[2:0] | SDM I/O | Input | VCCIO_SDM |
AS_nCSO[3:0] | SDM I/O | Output | VCCIO_SDM |
AS_DATA[3:0] | SDM I/O | Bidirectional | VCCIO_SDM |
AS_CLK | SDM I/O | Output | VCCIO_SDM |
AS_nRST 15 | SDM I/O | Output | VCCIO_SDM |
MSEL Pin Function for the AS x4 Configuration Scheme
The SDM samples the MSEL pins immediately after power-on in the SDM Start state. After the SDM samples the MSEL pins, the MSEL pins become active-low chips selects. For AS x4 designs using one flash device, AS_nCSOO asserts low when the SDM starts to communicate with the QSPI flash. The remaining chip select pins, AS_nCSO1 - AS_nCSO3 deassert high.
Section Content
AS Configuration Scheme Hardware Components and File Types
AS Single-Device Configuration
AS Using Multiple Serial Flash Devices
AS Configuration Timing Parameters
Skew Tolerance Guidelines
Programming Serial Flash Devices
Serial Flash Memory Layout
AS_CLK
Active Serial Configuration Software Settings
Quartus Prime Programming Steps
Debugging Guidelines for the AS Configuration Scheme