[gem5-users] 答复: explaination about command_window in MemCtrl.py

[Liyichao via gem5-users]

Hi all:
         Any one knows?

Best regards
Li Yichao

发件人: Liyichao
发送时间: 2021年10月13日 15:51
收件人: gem5 users mailing list <gem5-users@gem5.org>
抄送: wuhailin <wuhail...@huawei.com>
主题: explaination about command_window in MemCtrl.py

Hi all:
Now I’m working on researching LPDDR5 feature on GEM5.
But I do not clearly know the parameter ”command_window“ in MemCtrl.py, and why 
the default value set to 10ns.

In a workshop vedio for “Memory controller for LPDDR5”, there is a formula 
“maxCommandsPerBurst = burst_length / beats_per_clock”, but I have found in 
code in v21, there is a formula “maxCommandPerWindow = command_window / tCK” in 
MemInterface::setCtrl, what is the difference between “maxCommandsPerBurst” and 
“maxCommandPerWindow”?



Best regards

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