I/O Clocking Modes

Versal ACAP Technical Reference Manual (AM011)

Document ID
AM011
Release Date
2022-04-26
Revision
1.4 English

The controller's I/O clocking modes are listed in the following table.

Table 1. SD_eMMC Clocking Modes
Controller Mode Clock Rate (MHz) Data Rate Clock Source Tuning Method
SD Default speed 25 Single DIV_CLK ~
SDR-12 25 Single DIV_CLK ~
High speed 50 Single DLL Clocks Manual
SDR-25 50 Single DLL Clocks Manual
DDR-50 50 Double DLL Clocks Manual
SDR-50 100 Single DLL Clocks Auto-tuning
SDR-104 200 Single DLL Clocks Auto-tuning
eMMC Legacy MMC 25 Single DIV_CLK ~
HS-SDR 50 Single DLL Clocks Manual
HS-DDR 50 Double DLL Clocks Manual
HS-200 200 Single DLL Clocks Auto-tuning