HY5FS123235AFCP Datasheet, PDF (3/74 Pages) Hynix Semiconductor – 512M (16Mx32) GDDR4 SDRAM

HY5FS123235AFCP
TABLE OF CONTENTS
FEATURES........................................................................................................................................................5
FEATURES..............................................................................................................................................5
FUNCTIONAL DESCRIPTION....................................................................................................................5
INITIALIZATION................................................................................................................................................6
REGISTER DEFINITION......................................................................................................................................8
MODE REGISTER.....................................................................................................................................8
EXTENDED MODE REGISTER..................................................................................................................12
EXTENDED MODE REGISTER2................................................................................................................15
EXTENDED MODE REGISTER3................................................................................................................16
COMMAND & ADDRESS.....................................................................................................................................17
Addressing.............................................................................................................................................17
Commands.............................................................................................................................................18
OPERATION.....................................................................................................................................................19
Deselect.................................................................................................................................................19
No Operation (NOP)................................................................................................................................19
MODE REGISTER SET..............................................................................................................................19
Activation...............................................................................................................................................19
Data Terminator Disable..........................................................................................................................20
Bank Restrictions....................................................................................................................................20
READ.....................................................................................................................................................21
READ and DLL Off Mode.........................................................................................................................24
WRITE...................................................................................................................................................25
PRECHARGE...........................................................................................................................................28
AUTO PRECHARGE.................................................................................................................................28
AUTO REFRESH.....................................................................................................................................28
SELF REFRESH.......................................................................................................................................29
Power Down..........................................................................................................................................31
READ and WRITE DBI............................................................................................................................36
CLOCKING, DATA CAPTURE....................................................................................................................41
Data Capture........................................................................................................................................41
Data Training.........................................................................................................................................42
Read Data Training Sequence.........................................................................................................42
Write Data Training Sequence........................................................................................................44
Changing Clock Frequency.....................................................................................................................46
DRIVER & TERMINATION..................................................................................................................................49
Programmable Impedance Output Buffer and Active Terminator...............................................................49
Impedance Control................................................................................................................................49
Data Terminator Disable........................................................................................................................50
Rev. 1.2 /June. 2008
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