21.13.1.10 ddr_write

Description

This tcl command writes the value of specified configuration registers pertaining to the DDR memory controller (MDDR/FDDR).

ddr_write [-deviceName "device name"] \
          -block {ddr name} \
          -name {register name} \
          -value {hexadecimal value}


Parameter	Type	Description
deviceName	string	Specify device name. This parameter is optional if only one device is available in the current configuration.
block	string	Specify blcok name: fddr \| mddr \| east_fddr \| west_fddr. Specifies which DDR configurator is used in the Libero design. SmartFusion 2 and IGLOO 2 - fddr and mddr • RTG4 - east_fddr and west_fddr.
name	string	Specifies which configuration registers need to be read. A complete list of registers is available in the DDR Interfaces User Guides for the respective families.
value	hexadecimal	Specifies the value to be written into the specified register of a given block. Hex_value in the form of “0x12FA”.


Return Type	Description
None	None


Error Code	Description
None	Parameter 'value' has illegal value.
None	Required parameter 'value' is missing.
None	Parameter 'name' has illegal value.
None	Required parameter 'name' is missing.
None	Parameter 'block' has illegal value.
None	Required parameter 'block' is missing.
None	Parameter 'param_name' is not defined. Valid command formatting is'ddr_write [-deviceName "device name"] -block "DDR Block Name" -name "DDR Resgister Name" -value "DDR register value"'.

Write a 16-bit value DDR Controller register DDRC_DYN_REFRESH_1_CR for a configured FDDR block on a SmartFusion 2 or IGLOO 2 device:

ddr_write -block fddr -name DDRC_DYN_REFRESH_1_CR -value 0x123f