HY5DU561622FLFP Datasheet, PDF (8/27 Pages) Hynix Semiconductor – 256Mb DDR SDRAM

HY5DU561622F(L)FP
WRITE MASK TRUTH TABLE
Function
Data Write¹
Data-In Mask¹
CKEn-1 CKEn
H
X
H
X
/CS, /RAS,
/CAS, /WE
X
X
DM
ADDR A10/AP BA
L
X
H
X
Note:
1. Write Mask command masks burst write data with reference to LDQS/UDQS(Data Strobes) and it is not related with read data.
In case of x16 data I/O, LDM and UDM control lower byte(DQ0~7) and Upper byte(DQ8~15) respectively.
Rev. 1.0 /Nov. 2007
8