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GLT5160L16-8TC Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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GLT5160L16-8TC Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
3 / 45 page 3 G-LINK Technology DEC. 2003 (Rev.2.4) FUNCTIONAL DESCRIPTION The GLT5160L16 provides basic functions, bank (row) activate, burst read / write, bank (row) precharge, and auto / self refresh. Each command is defined by control signals of RAS, CAS and WE at CLK rising edge. In addition to 3 signals, CS, CKE and A[10] are used as chip select, refresh option, and precharge option, respectively. To know the detailed definition of commands, please see the com- mand truth table. Activate (ACT) [RAS = L, CAS = WE = H] ACT command activates a row in an idle bank indicated by BA. Read (READ) [RAS = H, CAS = L, WE = H] READ command starts burst read from the active bank indicated by BA. First output data appears after CAS latency. When A[10] = H at this command, the bank is deactivated after the burst read (auto-pre- charge, READA). Write (WRITE) [RAS = H, CAS =WE = L] WRITE command starts burst write to the active bank indicated by BA. Total data length to be written is set by burst length. When A[10] = H at this command, the bank is deactivated after the burst write (auto-precharge, WRITEA). Precharge (PRE) [RAS = L, CAS = H, WE = L] PRE command deactivates the active bank indicated by BA. This command also terminates burst read / write operation. When A[10] = H at this command, both banks are deactivated (precharge all, PREA). Auto-Refresh (REFA) [RAS = CAS = L, WE = CKE = H] REFA command starts auto-refresh cycle. Refresh address includ- ing bank address are generated internally. After this command, the banks are precharged automatically. Any other command should not be asserted until tRC is met. CLK CS RAS CAS WE CKE A[10] Chip Select: L=select, h=deselect Com- Com- Com- Define Basic Com- Refresh option @refresh command Precharge Option @ precharge or read/write command Command Truth Table [1] Command Mnemonic CKE n- 1 CKE n CS RAS CAS WE BA A[10 ] A[9: 0] Deselect DESEL H X H X X X X X X No Operation NOP H X L H H H X X X Row Address Entry & Bank Activate ACT H X L L H H V V V Single Bank Precharge PRE H X L L H L V L X Precharge All Banks PREA H X L L H L V H X Column Address Entry & Write WRITE H X L H L L V L V Column Address Entry & Write with Auto-Precharge WRITEA H X L H L L V H V Column Address Entry & Read READ H X L H L H V L V Column Address Entry & Read with Auto-Precharge READA H X L H L H V H V Auto-Refresh REFA H H L L L H X X X Self-Refresh Entry REFS H L L L L H X X X Self-Refresh Exit REFSX L H H X X X X X X L H L H H H X X X Burst Terminate TBST H X L H H L X X X Mode Register Set MRS H X L L L L X L V 1. H = High Level, L = Low Level, V = Valid, X = Don't Care, n = CLK cycle number |
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