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AD484M1644VTA-8LI 데이터시트(PDF) 11 Page - List of Unclassifed Manufacturers |
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AD484M1644VTA-8LI 데이터시트(HTML) 11 Page - List of Unclassifed Manufacturers |
11 / 20 page Preliminary 11 64Mb SDRAM Ascend Semiconductor Corporation Current state Addr. Idle X X 4. Operative Command Table Action Nop or power down Nop or power down Notes 2 2 BA/CA/A10 BA/CA/A10 ILLEGAL ILLEGAL 3 3 BA/RA Row activating BA, A10 X Nop Refresh or self refresh 4 Remark H = High level, L = Low level, X = High or Low level (Don't care) /CS H L /R X H /C X H /W X X L L H H L L H L L L H H L L L L H L L H Command DESL NOP or BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF Op-Code Mode register accessing L L L L MRS Row active X X Nop Nop BA/CA/A10 BA/CA/A10 Begin read : Determine AP Begin write : Determine AP 5 5 BA/RA ILLEGAL 3 BA, A10 X Precharge ILLEGAL 6 4 H L X H X H X X L L H H L L H L L L H H L L L L H L L H DESL NOP or BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF Op-Code ILLEGAL L L L L MRS Read X X Continue burst to end → Row active Continue burst to end → Row active X BA/CA/A10 Burst stop → Row active Terminate burst, new read : Determine AP 7 BA/CA/A10 Terminate burst, start write : Determine AP 7, 8 BA/RA BA/A10 ILLEGAL Terminate burst, pre-charging 3 4 H L X H X H X H L L H H H L L H L L L L L L L L H H H L DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL X ILLEGAL L L L H REF/SELF Write X X Continue burst to end → Write recovering Continue burst to end → Write recovering X BA/CA/A10 Burst stop → Row active Terminate burst, start read : Determine AP 7, 8 7,8 BA/CA/A10 Terminate burst, new write : Determine AP 7 7 BA/RA BA/A10 ILLEGAL Terminate burst, pre-charging 3 9 H L X H X H X H L L H H H L L H L L L L L L L L H H H L DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL X ILLEGAL L L L H REF/SELF Op-Code ILLEGAL L L L L MRS Op-Code ILLEGAL L L L L MRS |
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