
3.3. SD/MMC Configuration
Note:
Contact your Intel sales representative for information about SD/MMC support.
In the configuration scheme using SD memory cards or MMC, the memory cards store configuration data. The SDM uses the
on-chip SD or MMC controller to interface to the memory cards. The SDM block reads the configuration data from the memory
cards for the configuration process. The configuration from SD and MMC supports x4 SD memory cards and x8 MMC.
Table 29.
Intel Agilex Configuration Data Width, Clock Rates, and Data Rates
Mode
Data Width (bits)
Max Clock Rate
Max Data Rate
MSEL[2:0]
Active
SD/MMC
4 or 8
50 MHz
400 Mb
3'b100
Table 30.
Required Configuration Signals for the SD/MMC Configuration Scheme
You specify SDM I/O pin functions using the Device
➤
Configuration
➤
Device and Pin Options dialog box in the Intel Quartus Prime software.
Configuration Function
Direction
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nSTATUS
SDM I/O
Output
V
CCIO_SDM
nCONFIG
SDM I/O
Input
V
CCIO_SDM
MSEL[2:0]
SDM I/O, Dual-Purpose
Input
V
CCIO_SDM
SDMMC_CFG_CMD
GPIO
Output
V
CCIO_SDM
SDMMC_CFG_DATA[7:0]
GPIO
Bidirectional
V
CCIO_SDM
SDMMC_CFG_CCLK
GPIO
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. You can reassign the GPIO, dual-purpose configuration
pins for other functions in user mode.
Related Information
MSEL Settings
3. Intel Agilex Configuration Schemes
UG-20205 | 2019.10.09
Intel
®
Agilex
™
Configuration User Guide
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