drive strength

[geethar]

How to change the drive strength of mobile DDR?

[geethar]

How can i access the mobile DDR mode register and extended mode register address?

How to set mode register in DDR?

[geethar]

part number for my micron mobile ddr is MT46H32M16LFBF-6 IT:C

[Yuri]

  According to the MT46H32M16LFBF  Datasheet, Extended Mode Register (EMR)

controls in particular drive strength. The EMR is programmed via the LOAD MODE REGISTER
command with BA0 = 0 and BA1 = 1. EMR bits 5,6,7 define memory drive strength.

< http://www.micron.com/~/media/Documents/Products/Data%20Sheet/DRAM/Mobile%20DRAM/Low-Power%20DRAM/LP... >

IMX23 provides EMR writing via setting bit field HW_DRAM_CTL38 [EMRS1_DATA] and

setting HW_DRAM_CTL09 [ WRITE_MODEREG ].

Have a great day,
Yuri

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[Yuri]

What is modile DDR (part number, Datasheet) ?

[Yuri]

   Please use DDR Mode registers (Extended Mode Register) to configure DDR

Output Drive Strength during DDR initialization.

Have a great day,
Yuri

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