AS4C128M16D3A-12BIN
z Mode Register MR3
The Mode Register MR3 controls Multi-purpose registers. The Mode Register 3 is written by asserting low on CS#,
RAS#, CAS#, WE#, high on BA1 and BA0, and low on BA2 while controlling the states of address pins according to
the table below
Table 9. Extended Mode Register EMR (3) Bitmap
BA2 BA1 BA0 A13 A12 A11 A10 A9
A8
A7
A6
A5
A4
A3
A2
A1
A0 Address Field
0*1
1
1
0*1
MPR MPR Loc Mode Register (3)
MPR location
Predefined pattern *2
BA1 BA0 MRS mode
A2
MPR
A1 A0
0
0
1
1
0
1
0
1
MR0
MR1
MR2
MR3
0
1
Normal operation *3
Dataflow from MPR
0
0
1
1
0
1
0
1
RFU
RFU
RFU
Note 1: BA2, A3 - A13 are RFU and must be programmed to 0 during MRS.
Note 2: The predefined pattern will be used for read synchronization.
Note 3: When MPR control is set for normal operation (MR3 A[2] = 0) then MR3 A[1:0] will be ignored.
Confidential
-20／83-
Rev. 1.0 May 2016
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
