Configuration Function Pin Type Direction Powered by
MSEL[2:0]
SDM I/O Input V
CCIO_SDM
AS_nCSO[3:0]
SDM I/O Output V
CCIO_SDM
AS_DATA[3:0]
SDM I/O Bidirectional V
CCIO_SDM
AS_CLK
SDM I/O Output V
CCIO_SDM
AS_nRST
(12)
SDM I/O Output V
CCIO_SDM
Note:
Although the CONF_DONE and INIT_DONE configuration signals are not required, Intel recommends that you use these
signals. The SDM drives the CONF_DONE signal high after successfully receiving full bitstream. The SDM drives the
INIT_DONE signal high to indicate the device is fully in user mode.These signals are important when debugging configuration.
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.
Related Information
• AS Configuration Timing in Intel Agilex Devices
For timing parameter minimum, typical, and maximum values.
• Intel Agilex Power Management User Guide
3.2.1. AS Configuration Scheme Hardware Components and File Types
You use the following components to implement the AS configuration scheme:
• Quad SPI flash memory
• The Intel FPGA Download Cable II to connect the Intel Quartus Prime Programmer to the PCB.
(12)
Even if not currently utilized, connect the pin to ensure future compatibility.
3. Intel Agilex Configuration Schemes
683673 | 2021.10.29
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