W641GG2JB Datasheet, PDF (75/109 Pages) Winbond – 1-Gbit GDDR3 Graphics SDRAM

6.16.5 Read followed by DTERDIS
W641GG2JB
1-Gbit GDDR3 Graphics SDRAM
Notes :
1. At least BL/2+1 NOPs are required between a READ command and a DTERDIS command in order to avoid contention on the
RDQS bus in a 2 memories system.
2. CAS Latency 7 is used as an example.
3. The DQ terminations are switched off (CL-1) clock periods after the DTERDIS command for a duration of BL/2+2 clocks.
4. The dashed lines (RDQS bus) describe the RDQS behavior in the case where the DTERDIS command corresponds to a Read
command applied to the second Graphics DRAM in a 2 memories system. In this case, RDQS would be driven by the second
Graphics DRAM.
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Publication Release Date: Apr, 22, 2011
Revision A01-002