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GS8170DW72AC-350 Datasheet(PDF) 13 Page - GSI Technology |
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GS8170DW72AC-350 Datasheet(HTML) 13 Page - GSI Technology |
13 / 32 page GS8170DW36/72AC-350/333/300/250 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. Rev: 1.04 4/2005 13/32 © 2003, GSI Technology Double Late Write, Pipelined Read Truth Table CK E1 (tn) E (tn) ADV (tn) W (tn) B (tn) Previous Operation Current Operation DQ/CQ (tn) DQ/CQ (tn+1) DQ/CQ (tn+2) 0→1 X F 0 X X X Bank Deselect ***/*** Hi-Z/Hi-Z --- 0→1 X X 1 X X Bank Deselect Bank Deselect (Continue) Hi-Z/Hi-Z Hi-Z/Hi-Z --- 0→1 1 T 0 X X X Deselect ***/*** Hi-Z/CQ --- 0→1 X X 1 X X Deselect Deselect (Continue) Hi-Z/CQ Hi-Z/CQ --- 0→1 0 T 0 0 T X Write Loads new address Stores DQx if Bx = 0 ***/*** ***/*** D1/CQ 0→1 0 T 0 0 F X Write (Abort) Loads new address No data stored ***/*** ***/*** Hi-Z/CQ 0→1 X X 1 X T Write Write Continue Increments address by 1 Stores DQx if Bx = 0 ***/*** Dn-1/CQ Dn/CQ 0→1 X X 1 X F Write Write Continue (Abort) Increments address by 1 No data stored ***/*** Dn-1/CQ Hi-Z/CQ 0→1 0 T 0 1 X X Read Loads new address ***/*** Q1/CQ --- 0→1 X X 1 X X Read Read Continue Increments address by 1 Qn-1/CQ Qn/CQ --- Notes: 1. If E2 = EP2 and E3 = EP3, then E = “T” else E = “F”. 2. If one or more Bx = 0, then B = “T” else B = “F”. 3. “1” = input “high”; “0” = input “low”; “X” = input “don’t care”; “T” = input “true”; “F” = input “false”. 4. “***” indicates that the DQ input requirement / output state and CQ output state are determined by the previous operation. 5. “---” indicates that the DQ input requirement / output state and CQ output state are determined by the next operation. 6. DQs are tristated in response to Bank Deselect, Deselect, and Write commands, one full cycle after the command is sampled. 7. CQs are tristated in response to Bank Deselect commands only, one full cycle after the command is sampled. 8. Up to three (3) Continue operations may be initiated after a Read or Write operation is initiated to burst transfer up to four (4) distinct pieces of data per single external address input. If a fourth (4th) Continue operation is initiated, the internal address wraps back to the initial exter- nal (base) address. |
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