HYB18H1G321AF QIMONDA [Qimonda AG], HYB18H1G321AF Datasheet - Page 25

• Manufacturer Part Number: HYB18H1G321AF
• Description: GDDR3 Graphics RAM 1-Gbit GDDR3 Graphics RAM
• Manufacturer: QIMONDA [Qimonda AG]

4.3
Rev. 0.92, 2007-10
06122007-MW7D-3G3M
A0-A11
BA0,2
RAS#
CAS#
CLK#
WE#
Extended Mode Register 2 Set Command
CKE
CLK
CS#
BA1
Extended Mode Register 2 Set Command (EMRS2)
COD
1
0
COD: Code to be loaded into
the register
Don't Care
FIGURE 13
25
The Extended Mode Register 2 must be written after power
up to operate the GDDR3 Graphics RAM. The Extended
Mode Register 2 can be programmed by performing a normal
Mode Register Set operation and setting the BA1 bit to HIGH
and BA0, BA2 bits to LOW. All bits defined as RFU in the
bitmap are reserved and must be set to LOW. The Extended
Mode Register 2 must be loaded when all banks are idle and
no burst are in progress. The controller must wait the
specified time
operation. The timing of the EMRS2 command operation is
equivalent to the timing of the MRS command operation.
t
MRD
before initiating any subsequent
HYB18H1G321AF–10/11/14
Internet Data Sheet
1-Gbit GDDR3