Pci Express* Based Interface Signals; Memory Channel Miscellaneous; Pci Express* Port 1 Signals - Intel BX80619I73960X Datasheet

Table 6-2.

Memory Channel Miscellaneous

Signal Name
DDR_RESET_C01_N
DDR_RESET_C23_N
DDR_SCL_C01
DDR_SCL_C23
DDR_SDA_C01
DDR_SDA_C23
DDR_VREFDQRX_C01
DDR_VREFDQRX_C23
DDR_VREFDQTX_C01
DDR_VREFDQTX_C23
DDR{01/
23}_RCOMP[2:0]
DRAM_PWR_OK_C01
DRAM_PWR_OK_C23
6.2

PCI Express* Based Interface Signals

Note: PCI Express* Ports 1, 2, and 3 Signals are receive and transmit differential pairs.
Table 6-3.

PCI Express* Port 1 Signals

Signal Name
PE1A_RX_DN[3:0]
PE1A_RX_DP[3:0]
PE1B_RX_DN[7:4]
PE1B_RX_DP[7:4]
PE1A_TX_DN[3:0]
PE1A_TX_DP[3:0]
PE1B_TX_DN[7:4]
PE1B_TX_DP[7:4]
42
System memory reset: Reset signal from processor to DRAM devices on the
DIMMs. DDR_RESET_C01_N is used for memory channels 0 and 1 while
DDR_RESET_C23_N is used for memory channels 2 and 3.
SMBus clock for the dedicated interface to the serial presence detect (SPD)
and thermal sensors (TSoD) on the DIMMs. DDR_SCL_C01 is used for
memory channels 0 and 1 while DDR_SCL_C23 is used for memory channels
2 and 3.
SMBus data for the dedicated interface to the serial presence detect (SPD)
and thermal sensors (TSoD) on the DIMMs. DDR_SDA_C1 is used for
memory channels 0 and 1 while DDR_SDA_C23 is used for memory channels
2 and 3.
Voltage reference for system memory reads. DDR_VREFDQRX_C01 is used
for memory channels 0 and 1 while DDR_VREFDQRX_C23 is used for memory
channels 2 and 3.
Voltage reference for system memory writes. DDR_VREFDQTX_C01 is used
for memory channels 0 and 1 while DDR_VREFDQTX_C23 is used for memory
channels 2 and 3.
Note: Future implementation option, not included in first silicon.
System memory impedance compensation. Impedance compensation must
be terminated on the system board using a precision resistor.
Power good input signal used to indicate that the VCCD power supply is
stable for memory channels 0 & 1 and channels 2 & 3.
PCIe Receive Data Input
PCIe Receive Data Input
PCIe Transmit Data Output
PCIe Transmit Data Output
Signal Descriptions
Description
Description
Datasheet, Volume 1