Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs
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Ixiasoft
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Ixiasoft
5.5.3. Combo DLL PHY Features
- Contains all data registers used to launch data, address, and control signals to the device and the memory controller
- Controls the off-chip data capture and synchronization logic for the read and write operations from and to the external Flash devices
- Includes an all-digital DLL for timing
- Access to PHY registers from the NAND and SD/eMMC controllers for a complete solution under the NAND or SD/eMMC controller driver
- Supports tuning for SD/eMMC interface using internal FIFO
The PHY supports 1:2 clock ratio between the PHY clock (clk_phy) and memory controller clock (clk_ctrl) for NAND Flash. The combo PHY supports 1:1 clock ratio of the clock frequency between PHY clock (clk_phy) and memory controller clock (clk_ctrl) for the SD/eMMC Flash controller.