HY5FS123235AFCP Datasheet, PDF (38/74 Pages) Hynix Semiconductor – 512M (16Mx32) GDDR4 SDRAM

HY5FS123235AFCP
Burst WRITE Start
Set Previous data and
RDQS to High
Check different bit count
between previous data
and next data
No
Number of 1's
Yes
More than 4
RDQS = 0
Do not invert next Data
RDQS = 1
Invert next Data
No
Burst End?
Yes
Back to Back
Yes
Write?
No
End
Figure 25: a Flow Chart WRITE DBIac
Burst Write Start
Set RDQS to High
Check different bit count
between all data high
and next data
No
Number of 1's
Yes
More than 4
RDQS = 0
Do not invert next Data
RDQS = 1
Invert next Data
No
Burst End?
Yes
Back to Back
Yes
Write?
No
End
Figure 25: b Flow Chart WRITE READ DBIdc
Rev. 1.2 /June. 2008
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