9.2.18 ODT Dynamic

Note: This option is supported for RTG4 production devices only.

This option is used to opt in or out of the dynamic ODT set on a bank. Possible value are listed in the following table.

Table 9-2. ODT Dynamic Values and Descriptions
ValueDescription
ODT_STATIC=On ODT_DYNAMIC=OnIllegal
ODT_STATIC=On ODT_DYNAMIC=OffThe ODT resistor is always turned on.
ODT_STATIC=Off ODT_DYNAMIC=OffThe ODT resistor is always turned off.
ODT_STATIC=Off ODT_DYNAMIC=OnThe ODT resistor is on or off based on the ODT Dynamic bank setting.
The following I/O standards are supported:
  • LVDS
  • RSDS
  • MINILVDS
  • LVPECL
  • HSTLI
  • HSTLII
  • SSTL15I
  • SSTL15II
  • SSTL18I
  • SSTL18II
  • HSTL18I
  • HSTL18II
  • LPDDRI
  • LPDDRII
Note: There is a known issue in the Libero SoC I/O Editor and the pin report. A software limitation exists where a design cannot have different values for the P and N sides. Currently, both must have the same value. Libero SoC does program the P and N side correctly for programming. In I/O Editor or pin report, if RES_PULL is Up on both, it means the N side is programmed as Down or vice versa.