W641GG2JB Datasheet, PDF(71/109 Page) Winbond – 1-Gbit GDDR3 Graphics SDRAM

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W641GG2JB Datasheet, PDF (71/109 Pages) Winbond – 1-Gbit GDDR3 Graphics SDRAM

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W641GG2JB

1-Gbit GDDR3 Graphics SDRAM

6.16.1.2 Basic Read Burst Timing

tCH

tCL

tCK

tHP

CLK#

CLK

RDQS

Preamble

tRPRE

tDQSCK

Postamble

tRPST

DQ (first data valid)

DQ (last data valid)

tAC

All DQs collectively

tDQSQ

Data

tDQSQ

tQH

Valid

tQHS window

tLZ

tHZ

Donât care

Hi-Z : Not driven

By DDRâ¢ SGRAM

Notes :

1. The GDDR3 GRAPHICS SDRAM switches off the DQ terminations one cycle before data appears on the bus and drives the data

bus HIGH.

2. The GDDR3 GRAPHICS SDRAM drives the data bus HIGH one cycle after the last data driven on the bus before switching the

termination on again.

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Publication Release Date: Apr, 22, 2011

Revision A01-002

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