📄 sdram的结构、时序与性能的关系（上）_嵌入式空间.mht
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=C7=C7=B0=D2=BB=B8=F6=B2=D9=D7=F7=B5=C4=B9=A4=D7=F7=D0=D0=A3=AC=D2=B2=BE=CD=
=CA=C7=CB=B5=D2=AA=D1=B0=D6=B7=B5=C4=D0=D0=D2=D1=BE=AD=B4=A6=D3=DA=D1=A1=CD=
=A8=D3=D0=D0=A7=D7=B4=CC=AC=A3=AC=B4=CB=CA=B1=BF=C9=D6=B1=BD=D3=B7=A2=CB=CD=
=C1=D0=D1=B0=D6=B7=C3=FC=C1=EE=A3=AC=CA=FD=BE=DD=B6=C1=C8=A1=C7=B0=B5=C4=D7=
=DC=BA=C4=CA=B1=BD=F6=CE=AACL=A3=AC=D5=E2=BE=CD=CA=C7=CB=F9=CE=BD=B5=C4=B1=
=B3=BF=BF=B1=B3=A3=A8Back=20
to =
Back=A3=A9=D1=B0=D6=B7=A3=AC=CE=D2=C3=C7=B3=C6=D6=AE=CE=AA=D2=B3=BF=EC=CB=
=D9=C3=FC=D6=D0=A3=A8PFH=A3=ACPage Fast =
Hit=A3=A9=BB=F2=D2=B3=D6=B1=BD=D3=C3=FC=D6=D0=A3=A8PDH=A3=ACPage Direct=20
=
Hit=A3=A9=A1=A3<BR><BR>3=A1=A2=D2=AA=D1=B0=D6=B7=B5=C4=D0=D0=CB=F9=D4=DA=B5=
=C4L-Bank=D6=D0=D2=D1=BE=AD=D3=D0=D2=BB=B8=F6=D0=D0=B4=A6=D3=DA=BB=EE=B6=AF=
=D7=B4=CC=AC=A3=A8=CE=B4=B9=D8=B1=D5=A3=A9=A3=AC=D5=E2=D6=D6=CF=D6=CF=F3=BE=
=CD=B1=BB=B3=C6=D7=F7=D1=B0=D6=B7=B3=E5=CD=BB=A3=AC=B4=CB=CA=B1=BE=CD=B1=D8=
=D0=EB=D2=AA=BD=F8=D0=D0=D4=A4=B3=E4=B5=E7=C0=B4=B9=D8=B1=D5=B9=A4=D7=F7=D0=
=D0=A3=AC=D4=D9=B6=D4=D0=C2=D0=D0=B7=A2=CB=CD=D0=D0=D3=D0=D0=A7=C3=FC=C1=EE=
=A1=A3=BD=E1=B9=FB=A3=AC=D7=DC=BA=C4=CA=B1=BE=CD=CA=C7tRP+tRCD+CL=A3=AC=D5=
=E2=D6=D6=C7=E9=BF=F6=CE=D2=C3=C7=B3=C6=D6=AE=CE=AA=D2=B3=B4=ED=CA=A7=A3=A8=
PM=A3=ACPage=20
=
Miss=A3=A9=A1=A3<BR><BR>=CF=D4=C8=BB=A3=ACPFH=CA=C7=D7=EE=C0=ED=CF=EB=B5=C4=
=D1=B0=D6=B7=C7=E9=BF=F6=A3=ACPM=D4=F2=CA=C7=D7=EE=D4=E3=B8=E2=B5=C4=D1=B0=
=D6=B7=C7=E9=BF=F6=A1=A3=C9=CF=CA=F6=C8=FD=D6=D6=C7=E9=BF=F6=B7=A2=C9=FA=B5=
=C4=BB=FA=C2=CA=B8=F7=D7=D4=BC=F2=B3=C6=CE=AAPHR=A1=AA=A1=AAPH=20
Rate=A1=A2PFDR=A1=AA=A1=AAPFH Rate=A1=A2PMR=A1=AA=A1=AAPM=20
=
Rate=A1=A3=D2=F2=B4=CB=A3=AC=CF=B5=CD=B3=C9=E8=BC=C6=C8=CB=D4=B1=A3=A8=B0=
=FC=C0=A8=C4=DA=B4=E6=D3=EB=B1=B1=C7=C5=D0=BE=C6=AC=A3=A9=B6=BC=BE=A1=C1=BF=
=CF=EB=CC=E1=B8=DFPHR=D3=EBPFHR=A3=AC=CD=AC=CA=B1=BC=F5=C9=D9PMR=A3=AC=D2=
=D4=B4=EF=B5=BD=CC=E1=B8=DF=C4=DA=B4=E6=B9=A4=D7=F7=D0=A7=C2=CA=B5=C4=C4=BF=
=B5=C4=A1=A3<BR><BR>=B6=FE=A1=A2=D4=F6=BC=D3PHR=B5=C4=B7=BD=B7=A8<BR><BR>=
=CF=D4=C8=BB=A3=AC=D5=E2=D3=EB=D4=A4=B3=E4=B5=E7=B9=DC=C0=ED=B2=DF=C2=D4=D3=
=D0=D7=C5=D6=B1=BD=D3=B5=C4=B9=D8=CF=B5=A3=AC=C4=BF=C7=B0=D3=D0=C1=BD=D6=D6=
=B7=BD=B7=A8=C0=B4=BE=A1=C1=BF=CC=E1=B8=DFPHR=A1=A3=D7=D4=B6=AF=D4=A4=B3=E4=
=B5=E7=BC=BC=CA=F5=BE=CD=CA=C7=C6=E4=D6=D0=D6=AE=D2=BB=A3=AC=CB=FC=D7=D4=B6=
=AF=B5=C4=D4=DA=C3=BF=B4=CE=D0=D0=B2=D9=D7=F7=D6=AE=BA=F3=BD=F8=D0=D0=D4=A4=
=B3=E4=B5=E7=A3=AC=B4=D3=B6=F8=BC=F5=C9=D9=C1=CB=C8=D5=BA=F3=B6=D4=CD=AC=D2=
=BBL-Bank=B2=BB=CD=AC=D0=D0=D1=B0=D6=B7=CA=B1=B7=A2=C9=FA=B3=E5=CD=BB=B5=C4=
=BF=C9=C4=DC=D0=D4=A1=A3=B5=AB=CA=C7=A3=AC=C8=E7=B9=FB=D2=AA=D4=DA=B5=B1=C7=
=B0=D0=D0=B9=A4=D7=F7=CD=EA=B3=C9=BA=F3=C2=ED=C9=CF=B4=F2=BF=AA=CD=AC=D2=BB=
L-Bank=B5=C4=C1=ED=D2=BB=D0=D0=B9=A4=D7=F7=CA=B1=A3=AC=C8=D4=C8=BB=B4=E6=D4=
=DAtRP=B5=C4=D1=D3=B3=D9=A1=A3=D4=F5=C3=B4=B0=EC=A3=BF=20
=
=B4=CB=CA=B1=BE=CD=D0=E8=D2=AAL-Bank=BD=BB=B4=ED=D4=A4=B3=E4=B5=E7=C1=CB=A1=
=A3<BR><BR>VIA=B5=C44=C2=B7=BD=BB=B4=ED=CA=BD=C4=DA=B4=E6=BF=D8=D6=C6=BE=CD=
=CA=C7=D4=DA=D2=BB=B8=F6L-Bank=B9=A4=D7=F7=CA=B1=A3=AC=B6=D4=CF=C2=D2=BB=B8=
=F6=D2=AA=B9=A4=D7=F7=B5=C4L-Bank=BD=F8=D0=D0=D4=A4=B3=E4=B5=E7=A1=A3=D5=E2=
=D1=F9=A3=AC=D4=A4=B3=E4=B5=E7=D3=EB=CA=FD=BE=DD=B5=C4=B4=AB=CA=E4=BD=BB=B4=
=ED=D6=B4=D0=D0=A3=AC=B5=B1=B7=C3=CE=CA=CF=C2=D2=BB=B8=F6L-Bank=CA=B1=A3=AC=
tRP=D2=D1=B9=FD=A3=AC=BE=CD=BF=C9=D2=D4=D6=B1=BD=D3=BD=F8=C8=EB=D0=D0=D3=D0=
=D0=A7=D7=B4=CC=AC=C1=CB=A1=A3=C4=BF=C7=B0VIA=C9=F9=B3=C6=BF=C9=D2=D4=BF=E7=
P-Bank=BD=F8=D0=D016=C2=B7=C4=DA=B4=E6=BD=BB=B4=ED=A3=AC=B2=A2=D2=D4LRU=CB=
=E3=B7=A8=BD=F8=D0=D0=D4=A4=B3=E4=B5=E7=B9=DC=C0=ED=A1=A3<BR><BR>=D3=D0=B9=
=D8L-Bank=BD=BB=B4=ED=D4=A4=B3=E4=B5=E7=A3=A8=B4=E6=C8=A1=A3=A9=B5=C4=BE=DF=
=CC=E5=D6=B4=D0=D0=D4=DA=B1=BE=BF=AF2001=C4=EA=B5=DA2=C6=DA=D2=D1=D3=D0=CF=
=EA=CF=B8=BD=E9=C9=DC=A3=AC=D5=E2=C0=EF=BE=CD=B2=BB=D4=D9=D6=D8=B8=B4=C1=CB=
=A1=A3<BR><BR><IMG=20
src=3D"" =
border=3D0><BR><BR>L-Bank=BD=BB=B4=ED=D7=D4=B6=AF=D4=A4=B3=E4=B5=E7/=B6=C1=
=C8=A1=CA=B1=D0=F2=CD=BC=A3=BAL-Bank 0=D3=EBL-Bank=20
=
3=CA=B5=CF=D6=C1=CB=CE=DE=BC=E4=B8=F4=BD=BB=B4=ED=B6=C1=C8=A1=A3=AC=B1=DC=
=C3=E2=C1=CBtRP=B6=D4=D0=D4=C4=DC=B5=C4=D3=B0=CF=EC<BR> =
<BR>=C8=FD=A1=
=A2=D4=F6=BC=D3PFHR=B5=C4=B7=BD=B7=A8<BR><BR>=CE=DE=C2=DB=CA=C7=D7=D4=B6=AF=
=D4=A4=B3=E4=B5=E7=BB=B9=CA=C7=BD=BB=B4=ED=B9=A4=D7=F7=B5=C4=B7=BD=B7=A8=B6=
=BC=CE=DE=B7=A8=CF=FB=B3=FDtRCD=CB=F9=B4=F8=C0=B4=B5=C4=D1=D3=B3=D9=A1=A3=
=D2=AA=BD=E2=BE=F6=D5=E2=B8=F6=CE=CA=CC=E2=A3=AC=BE=CD=D2=AA=BE=A1=C1=BF=C8=
=C3=D2=BB=B8=F6=B9=A4=D7=F7=D0=D0=D4=DA=BD=F8=D0=D0=D4=A4=B3=E4=B5=E7=C7=B0=
=BE=A1=BF=C9=C4=DC=B6=E0=B5=C4=BD=D3=CA=D5=B6=E0=B8=F6=B9=A4=D7=F7=C3=FC=C1=
=EE=A3=AC=D2=D4=B4=EF=B5=BD=B1=B3=BF=BF=B1=B3=B5=C4=D0=A7=B9=FB=A3=AC=B4=CB=
=CA=B1=BE=CD=D6=BB=CA=A3=CF=C2CL=CB=F9=D4=EC=B3=C9=B5=C4=B6=C1=C8=A1=D1=D3=
=B3=D9=C1=CB=A3=A8=D0=B4=C8=EB=CA=B1=C3=BB=D3=D0=D1=D3=B3=D9=A3=A9=A1=A3<=
BR><BR>=C8=E7=BA=CE=D7=F6=B5=BD=D5=E2=D2=BB=B5=E3=C4=D8=A3=BF=D5=E2=BE=CD=
=CA=C7=B1=B1=C7=C5=D0=BE=C6=AC=B5=C4=D4=F0=C8=CE=C1=CB=A1=A3=D4=DA=C9=CF=CE=
=C4=B5=C4=CA=B1=D0=F2=CD=BC=D6=D0=D3=D0=D2=BB=B8=F6=B2=CE=CA=FDtRAS=A3=A8=
Active=20
to Precharge=20
=
Command=A3=AC=D0=D0=D3=D0=D0=A7=D6=C1=D4=A4=B3=E4=B5=E7=C3=FC=C1=EE=BC=E4=
=B8=F4=D6=DC=C6=DA=A3=A9=A1=A3=CB=FC=D3=D0=D2=BB=B8=F6=B7=B6=CE=A7=A3=AC=B6=
=D4=D3=DAPC133=B1=EA=D7=BC=A3=AC=D2=BB=B0=E3=CA=C7=D4=A4=B3=E4=B5=E7=C3=FC=
=C1=EE=D6=C1=C9=D9=D2=AA=D4=DA=D0=D0=D3=D0=D0=A7=C3=FC=C1=EE5=B8=F6=CA=B1=
=D6=D3=D6=DC=C6=DA=D6=AE=BA=F3=B7=A2=B3=F6=A3=AC=D7=EE=B3=A4=BC=E4=B8=F4=CA=
=D3=D0=BE=C6=AC=B6=F8=D2=EC=A3=A8=BB=F9=B1=BE=D4=DA120000ns=D7=F3=D3=D2=A3=
=A9=A3=AC=B7=F1=D4=F2=B9=A4=D7=F7=D0=D0=B5=C4=CA=FD=BE=DD=BD=AB=D3=D0=B6=AA=
=CA=A7=B5=C4=CE=A3=CF=D5=A1=A3=C4=C7=C3=B4=D5=E2=D2=B2=BE=CD=D2=E2=CE=B6=D7=
=C5=D2=BB=B8=F6=B9=A4=D7=F7=D0=D0=B4=D3=D3=D0=D0=A7=A3=A8=D1=A1=CD=A8=A3=A9=
=BF=AA=CA=BC=A3=AC=BF=C9=D2=D4=D3=D0120000ns=B5=C4=B3=D6=D0=F8=B9=A4=D7=F7=
=CA=B1=BC=E4=B6=F8=B2=BB=D3=C3=BD=F8=D0=D0=D4=A4=B3=E4=B5=E7=A1=A3=CF=D4=C8=
=BB=A3=AC=D6=BB=D2=AA=B1=B1=C7=C5=D0=BE=C6=AC=B2=BB=B7=A2=B3=F6=D4=A4=B3=E4=
=B5=E7=A3=A8=B0=FC=C0=A8=D4=CA=D0=ED=D7=D4=B6=AF=D4=A4=B3=E4=B5=E7=A3=A9=B5=
=C4=C3=FC=C1=EE=A3=AC=D0=D0=B4=F2=BF=AA=B5=C4=D7=B4=CC=AC=BE=CD=BB=E1=D2=BB=
=D6=B1=B1=A3=B3=D6=A1=A3=D4=DA=B4=CB=C6=DA=BC=E4=B5=C4=B6=D4=B8=C3=D0=D0=B5=
=C4=C8=CE=BA=CE=B6=C1=D0=B4=B2=D9=D7=F7=D2=B2=BE=CD=B2=BB=BB=E1=D3=D0tRCD=
=B5=C4=D1=D3=B3=D9=A1=A3=BF=C9=BC=FB=A3=AC=C8=E7=B9=FB=B1=B1=C7=C5=D0=BE=C6=
=AC=D4=DA=C4=DC=CD=AC=CA=B1=B4=F2=BF=AA=B5=C4=D0=D0=A3=A8=D2=B3=A3=A9=D4=BD=
=B6=E0=A3=AC=C4=C7=C3=B4PFHR=D2=B2=BE=CD=D4=BD=B4=F3=A1=A3=D0=E8=D2=AA=C7=
=BF=B5=F7=B5=C4=CA=C7=A3=AC=D5=E2=C0=EF=B5=C4=CD=AC=CA=B1=B4=F2=BF=AA=B2=BB=
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