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EM68932DVKB Datasheet(PDF) 5 Page - Etron Technology, Inc. |
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EM68932DVKB Datasheet(HTML) 5 Page - Etron Technology, Inc. |
5 / 40 page EtronTech EM68932DVKB Etron Confidential 5 Rev. 1.0 Aug. 2009 Operation Mode Table 3 shows the truth table for the operation commands. Table 3. Truth Table (Note (1), (2)) Command State CKEn-1 CKEn DM BA1 BA0 A10 A11, A9-0 CS RAS CAS WE BankActivate Idle(3) H X X V V Row Address L L H H BankPrecharge Any H X X V V L X L L H L PrechargeAll Any H X X X X H X L L H L Write Active(3) H X V V V L L H L L Write and AutoPrecharge Active(3) H X V V V H L H L L Read Active(3) H X X V V L L H L H Read and Autoprecharge Active(3) H X X V V H Column Address A0~A7 L H L H Mode Register Set Idle H X X L L L L L L Extended Mode Register Set Idle H X X H L OP code L L L L No-Operation Any H X X X X X X L H H H Device Deselect Any H X X X X X X H X X X Burst Stop Active(4) H X X X X X X L H H L AutoRefresh Idle H H X X X X X L L L H SelfRefresh Entry Idle H L X X X X X L L L H H X X X SelfRefresh Exit Idle (Self Refresh) L H X X X X X L H H H H X X X Power Down Mode Entry Idle/Active(5 ) H L X X X X X L H H H H X X X Power Down Mode Exit Any (Power Down) L H X X X X X L H H H Deep Power Down Entry Any H L X X X X X L H H L Deep Power Down Exit Any L H X X X X X H X X X Data Mask Enable Active H X L X X X X X X X X Data Mask Disable Active H X H X X X X X X X X Note: 1. V = Valid data, X = Don't Care, L = Low level, H = High level 2. CKEn signal is input level when commands are provided. CKEn-1 signal is input level one clock cycle before the commands are provided. 3. These are states of bank designated by BA0, BA1signals. 4. Read burst stop with BST command for all burst types. 5. Power Down Mode can not enter in the burst operation. When this command is asserted in the burst cycle, device state is clock suspend mode. |
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