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H5GQ2H24AFR-R0C 数据表(PDF) 79 Page - Hynix Semiconductor |
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H5GQ2H24AFR-R0C 数据表(HTML) 79 Page - Hynix Semiconductor |
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79 / 172 page ![]() This document is a general product description and is subject to change without notice. Hynix Semiconductor does not assume any responsability for use of circuits described. No patent licenses are implied. Rev. 1.2 /Nov. 2011 79 H5GQ2H24AFR Figure 49. WRITE to READ 2. WCK and CK are shown aligned (tWCK2CKPIN=0, tWCK2CK=0) for illustration purposes. WCK2CK training determines the needed offset between WCK and CK. DO DO m+7 m CL = CLmrs = 6 WL = WLmrs = 3 DBI DBI n+7 n Bank a, Col m Col m Ta0 Ta7 Ta8 T0 T1 T3 T4 T4n T5 Ta6 Ta6n DO DO n+7 n Bank b, Col n Col n tWTR respectively must be met. DBI DBI m+7 m T3n 1. WLmrs = 3 and CLmrs = 6 is shown as an example. Actual supported values will be found in the MR and AC timings sections. 3. EDC may be on or off. See Figure 4 for EDC Timing. 5. For WRITE operations it is important that the latching point meet the data valid window requirements, which may or may not be center aligned at the pins. 6. Before the READ and WRITE commands, an ACTIVE (ACT) command is required to be issued to the GDDR5 SGRAM and tRCDRD or tRCDWR 4. tWTR = tWTRL when bank groups is enabled and both WRITE and READ access banks in the same bank group, otherwise tWTR=tWTRS. Notes: 7. tWCK2DQI, tWCKDQO = 0 is shown for illustration purposes. DONʹT CARE TRANSITIONING DATA NOP WRITE NOP NOP NOP READ NOP NOP NOP CK CK# ADDRESS DQ DBI# WCK# WCK COMMAND ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) |
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