Intel Xeon X3460 BX80605X3460 User Manual
Product codes
BX80605X3460
Processor Uncore Configuration Registers
250
Intel® Xeon® Processor 3400 Series Datasheet, Volume 2
4.10.24 MC_CHANNEL_0_SCHEDULER_PARAMS
MC_CHANNEL_1_SCHEDULER_PARAMS
These are the parameters used to control parameters within the scheduler.
4.10.25 MC_CHANNEL_0_MAINTENANCE_OPS
MC_CHANNEL_1_MAINTENANCE_OPS
This register enables various maintenance operations such as Refreshes, ZQ, RCOMP,
and so forth.
and so forth.
Device:
4, 5
Function: 0
Offset:
B8h
Access as a DWord
Bit
Attr
Default
Description
31:14
RO
0
Reserved
13
RW
0
DDR_CLK_TRISTATE_DISABLE. When set low DDR clock drivers will
always be enabled.
12
RW
0
CS_ODT_TRISTATE_DISABLE. When set low CS and ODT drivers will
always be enabled.
11
RW
0
FLOAT_EN
When set, the address and command lines will float to save power when
When set, the address and command lines will float to save power when
commands are not being sent out. This setting may not work with
RDIMMs.
10:6
RW
7
PRECASRDTHRESHOLD
Threshold above which Medium-Low Priority reads can PRE-CAS write
Threshold above which Medium-Low Priority reads can PRE-CAS write
requests.
5
RW
0
DISABLE_ISOC_RBC_RESERVE
When set, this bit will prevent any RBC's from being reserved for ISOC.
When set, this bit will prevent any RBC's from being reserved for ISOC.
4
RW
0
ENABLE3N
Enable 3n Timing.
Enable 3n Timing.
3
RW
0
ENABLE2N
Enable 2n Timing.
Enable 2n Timing.
2:0
RW
0
PRIORITYCOUNTER
Upper 3 MSB of 8-bit priority time out counter.
Upper 3 MSB of 8-bit priority time out counter.
Device:
4, 5
Function: 0
Offset:
BCh
Access as a DWord
Bit
Attr
Default
Description
31:13
RO
0
Reserved
12:0
RW
0
MAINT_CNTR
Value to be loaded in the maintenance counter. This counter sequences the
Value to be loaded in the maintenance counter. This counter sequences the
rate to Refreshes, ZQ, RCOMP. It should be set to 7800/DCLKperiodInNS. The
value of 0 is illegal.