Datasheet
MPR Readout Serial Format
The serial format is required when enabling the MPR function to read out the contents of an MRx, temperature
sensor status, and the command address parity error frame. However, data bus calibration locations (four 8-bit
registers) can be programmed to read out any of the three formats. The DRAM is required to drive associated
strobes with the read data similar to normal operation (such as using MRS preamble settings).
Serial format implies that the same pattern is returned on all DQ lanes, as shown the table below, which uses
values programmed into the MPR via [7:0] as 0111 1111.
Table 31. MPR Readout Serial Format
x4 Device
Serial
UI0
UI1
UI2
UI3
UI4
UI5
UI6
UI7
DQ0
0
1
1
1
1
1
1
1
DQ1
0
1
1
1
1
1
1
1
DQ2
0
1
1
1
1
1
1
1
DQ3
0
1
1
1
1
1
1
1
x8 Device
Serial
UI0
UI1
UI2
UI3
UI4
UI5
UI6
UI7
DQ0
0
1
1
1
1
1
1
1
DQ1
0
1
1
1
1
1
1
1
DQ2
0
1
1
1
1
1
1
1
DQ3
0
1
1
1
1
1
1
1
DQ4
0
1
1
1
1
1
1
1
DQ5
0
1
1
1
1
1
1
1
DQ6
0
1
1
1
1
1
1
1
DQ7
0
1
1
1
1
1
1
1
x16 Device
Serial
UI0
UI1
UI2
UI3
UI4
UI5
UI6
UI7
DQ0
0
1
1
1
1
1
1
1
DQ1
0
1
1
1
1
1
1
1
DQ2
0
1
1
1
1
1
1
1
DQ3
0
1
1
1
1
1
1
1
DQ4
0
1
1
1
1
1
1
1
DQ5
0
1
1
1
1
1
1
1
DQ6
0
1
1
1
1
1
1
1
DQ7
0
1
1
1
1
1
1
1
DQ8
0
1
1
1
1
1
1
1
DQ9
0
1
1
1
1
1
1
1
DQ10
0
1
1
1
1
1
1
1
DQ11
0
1
1
1
1
1
1
1
DQ12
0
1
1
1
1
1
1
1
DQ13
0
1
1
1
1
1
1
1
DQ14
0
1
1
1
1
1
1
1
DQ15
0
1
1
1
1
1
1
1
AS4C256M16D4
Confidential
- 75 of 201 -
Rev.1.0 Aug.2019