Intel 2760QM FF8062701065300 User Manual
Product codes
FF8062701065300
Datasheet, Volume 1
41
Signal Descriptions
6
Signal Descriptions
This chapter describes the processor signals. They are arranged in functional groups
according to their associated interface or category.
according to their associated interface or category.
6.1
System Memory Interface
Table 6-1.
Memory Channel DDR0, DDR1, DDR2, DDR3
Signal Name
Description
DDR{0/1/2/3}_BA[2:0]
Bank Address. Defines the bank which is the destination for the
current Activate, Read, Write, or Precharge command.
current Activate, Read, Write, or Precharge command.
DDR{0/1/2/3}_CAS_N
Column Address Strobe.
DDR{0/1/2/3}_CKE[3:0]
Clock Enable.
DDR{0/1/2/3}_CLK_DN[3:0]
DDR{0/1/2/3}_CLK_DP[3:0]
Differential clocks to the DIMM. All command and control signals are
valid on the rising edge of clock.
valid on the rising edge of clock.
DDR{0/1/2/3}_CS_N[1:0]
DDR{0/1/2/3}_CS_N[5:4]
DDR{0/1/2/3}_CS_N[5:4]
Chip Select. Each signal selects one rank as the target of the
command and address.
command and address.
DDR{0/1/2/3}_DQ[63:00]
Data Bus. DDR3 Data bits.
DDR{0/1/2/3}_DQS_DP[08:00]
DDR{0/1/2/3}_DQS_DN[08:00]
Data strobes. Differential pair, Data Strobe. Differential strobes latch
data for each DRAM. Driven with edges in center of data, receive
edges are aligned with data edges.
data for each DRAM. Driven with edges in center of data, receive
edges are aligned with data edges.
DDR{0/1/2/3}_ECC[7:0]
Check bits. An error correction code is driven along with data on these
lines for DIMMs that support that capability.
Note: ECC DIMMs are not supported on the processor; thus, these
signals are not used.
lines for DIMMs that support that capability.
Note: ECC DIMMs are not supported on the processor; thus, these
signals are not used.
DDR{0/1/2/3}_MA[15:00]
Memory Address. Selects the Row address for Reads and writes, and
the column address for activates. Also used to set values for DRAM
configuration registers.
the column address for activates. Also used to set values for DRAM
configuration registers.
DDR{0/1/2/3}_ODT[3:0]
On Die Termination. Enables DRAM on die termination during Data
Write or Data Read transactions.
Write or Data Read transactions.
DDR{0/1/2/3}_RAS_N
Row Address Strobe.
DDR{0/1/2/3}_WE_N
Write Enable.