Datasheet

Intel
®
Itanium
®
Processor 9300 Series and 9500 Series Datasheet 161
Signal Definitions
FBD1NBICLK[C/D][P/N]0 I These differential pair clock signals generated from the branch one, channel C and
D of FB-DIMMs are input to the processor.
Example: FBD1NBICLKDP0 represent FB-DIMM branch 1, northbound clock input
signal of channel D and positive bit of the differential pair.
FBD0SBOCLK[A/B][P/N]0 O These differential pair output clock signals generated from the processor are inputs
to the branch zero, channel A and B of FB-DIMMs.
Example: FBD0SBICLKAP0 represent FB-DIMM branch 0, southbound clock output
signal of channel A and positive bit of the differential pair.
FBD1SBOCLK[C/D][P/N]0 O These differential pair output clock signals generated from the processor are inputs
to the branch one, channel C and D of FB-DIMMs.
Example: FBD1SBICLKDP0 represents FB-DIMM branch 1, southbound clock output
signal of channel D and positive bit of the differential pair.
FBD[0/1]REFSYSCLK[P/N] I These signals are no longer used by the Intel
®
Itanium
®
Processor 9300 Series and
Intel
®
Itanium
®
9500 Series.
FBD0NBI[A/B][P/N][12:0] I These differential pair data signals generated from the branch zero, channel A and
B of FB-DIMMs are input to the processor.
Example: FBD0NBIAP[0] represent FB-DIMM branch 0, northbound data input lane
0 signal of channel A and positive bit of the differential pair.
FBD0NBI[A/B][P/N][13] I These signals are spare lanes, and are intended for Reliability, Availability, and
Serviceability (RAS) coverage on the Intel
®
Itanium
®
9500 Processor Series. These
signals are not used by Intel
®
Itanium
®
9300 Processor Series.
Table 7-1. Signal Definitions for the Intel
®
Itanium
®
Processor 9300 Series and Intel
®
Itanium
®
9500 Series (Sheet 3 of 8)
Name Type Description
FB-
DIMM
1NBICLKC/DP/N
Interface
Name
Branch
Number
North
Bound
Input Clock Channel Differential
Pair
Polarity
Positive/
Negative
FB-
DIMM
0SBOCLKA/BP/N
Interface
Name
Branch
Number
South
Bound
Output Clock Channel Differential
Pair
Polarity
Positive/
Negative
FB-
DIMM
1SBOCLKC/DP/N
Interface
Name
Branch
Number
South
Bound
Output Clock Channel Differential
Pair
Polarity
Positive/
Negative
FB-
DIMM
0 NB I A/B P/N [12:0]
Interface
Name
Branch
Number
North
Bound
Input Channel Differential
Pair
Polarity
Positive/
Negative
Lane
Number