W641GG2JB Datasheet, PDF (4/109 Pages) Winbond – 1-Gbit GDDR3 Graphics SDRAM

W641GG2JB
1-Gbit GDDR3 Graphics SDRAM
6.16 Reads (RD)...................................................................................................................................... 69
6.16.1 Read - Basic Information ............................................................................................................................... 69
6.16.1.1 Read Command........................................................................................................................................................70
6.16.1.2 Basic Read Burst Timing...........................................................................................................................................71
6.16.2 Read - Basic Sequence .................................................................................................................................72
6.16.2.1 Read Burst ................................................................................................................................................................72
6.16.3 Consecutive Read Bursts .............................................................................................................................. 73
6.16.3.1 Gapless Bursts ..........................................................................................................................................................73
6.16.4 Bursts with Gaps ............................................................................................................................................ 74
6.16.4.1 Consecutive Read Bursts with Gaps.........................................................................................................................74
6.16.5 Read followed by DTERDIS...........................................................................................................................75
6.16.6 Read with Autoprecharge .............................................................................................................................. 76
6.16.7 Read followed by Write ..................................................................................................................................77
6.16.8 Read followed by Precharge on the same Bank ............................................................................................78
6.17 Data Termination Disable (DTERDIS) .............................................................................................. 79
6.17.1 Data Terminal Disable Command .................................................................................................................79
617.1.1 DTERDIS Timing .......................................................................................................................................................80
6.17.2 DTERDIS followed by DTERDIS ...................................................................................................................81
6.17.3 DTERDIS followed by READ ......................................................................................................................... 82
6.17.4 DTERDIS followed by Write ...........................................................................................................................83
6.18 Precharge (PRE/PREALL) ............................................................................................................... 84
6.18.1 Precharge Command ....................................................................................................................................84
6.18.2 BA2, BA1 and BA0 precharge bank selection within one rank ...................................................................... 85
6.18.3 Precharge Timing ..........................................................................................................................................85
6.19 Auto Refresh Command (AREF) ...................................................................................................... 86
6.19.1 Auto Refresh Command ................................................................................................................................ 86
6.19.2 Auto Refresh Cycle........................................................................................................................................87
6.20 Self-Refresh .................................................................................................................................... 87
6.20.1 Self-Refresh Entry (SREFEN)........................................................................................................................87
6.20.1.1 Self-Refresh Entry Command ...................................................................................................................................88
6.20.1.2 Self Refresh Entry.....................................................................................................................................................89
6.21 Self-Refresh Exit (SREFEX)............................................................................................................. 89
6.21.1 Self Refresh Exit Command .......................................................................................................................... 90
6.21.2 Self Refresh Exit ............................................................................................................................................ 90
6.22 Power-Down .................................................................................................................................... 91
6.22.1 Power Down Command.................................................................................................................................91
6.22.2 Power-Down Mode ........................................................................................................................................ 92
7 ELECTRICAL CHARACTERISTICS........................................................................................... 93
7.1 Absolute Maximum Ratings and Operation Conditions ....................................................................... 93
7.1.1 Absolute Maximum Rating ...............................................................................................................................93
7.2 DC Operation Conditions ................................................................................................................... 93
7.2.1 Recommended Power & DC Operation Conditions .........................................................................................93
Publication Release Date: Apr, 22, 2011
-4-
Revision A01-002