DDR memory controller (MPMC)
RM0082
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Doc ID 018672 Rev 1
10.13.12 MEM7_CTL
register
10.13.13 MEM8_CTL
register
Table 85.
MEM7_CTL register bit assignments
Bit
Name
Reset
value
Range
Description
[31:25]
-
-
-
Reserved. Read undefined. Write should be
zero.
[24]
START
0x0
0x0 - 0x1 Begin CMD processing in the controller.
[23:17]
-
-
-
Reserved. Read undefined. Write should be
zero.
[16]
SREFRESH
0x0
0x0 - 0x1 Place DRAMs in self-refresh mode.
[15:09]
-
-
-
Reserved. Read undefined. Write should be
zero.
[08]
SW_SAME_EN
0x0
0x0 - 0x1
Enable read/ write grouping for CMD queue
placement logic.
[07:01]
-
-
-
Reserved. Read undefined. Write should be
zero.
[00]
REG_DIMM_EN
0x0
0x0 - 0x1
Enable registered DIMM operation of the
controller.
Table 86.
MEM8_CTL register bit assignments
Bit
Name
Reset
value
Range
Description
[31:25]
-
-
-
Reserved. Read undefined. Write should be
zero.
[24]
WRITE_MODE_RE
G
0x0
0x0 - 0x1 Write EMRS data to the DRAMs. WRITE-ONLY
[23:17]
-
-
-
Reserved. Read undefined. Write should be
zero.
[16]
WRITE_INTRPT
0x0
0x0 - 0x1
Allow controller to interrupt write bursts to the
DRAMs with a read CMD.
[15:09]
-
-
-
Reserved. Read undefined. Write should be
zero.
[08]
WEIGHTED_ROU
ND_ROBIN_LATE
CNCY_CONTROL
0x0
0x0 - 0x1 Free-running or limited WRR latency counters.
[07:01]
-
-
-
Reserved. Read undefined. Write should be
zero.
[00]
TRAS_LOCKOUT
0x0
0x0 - 0x1
Allow the controller to execute auto pre-charge
CMDs before TRAS_MIN expires.