Signal Definitions
Table 5-1.
Signal Definitions (Sheet 2 of 6)
Name
Type
Description
FBD0SBOCLK[A/B][P/N]0
O
These differential pair output clock signals generated from Intel Xeon Processor E7-
8800/4800/2800 Product Families processor are inputs to the branch zero, channel A
and B of Intel® SMI links.
Intel
SMI
0
SB
O
CLK
A/B
P/N
Interface Branch
Name
South
Output
Clock
Channel Differential
Pair
Number Bound
Polarity
Positive/
Negative
Example: FBD0SBICLKAP0 Intel SMI branch 0, south bound clock output signal of
channel A and positive bit of the differential pair.
FBD1NBI[C/D][P/N][13:0]
FBD1NBICLK[C/D][P/N]0
FBD1SBO[C/D][P/N][10:0]
I
These differential pair output data signals generated from Intel Xeon Processor E7-
8800/4800/2800 Product Families processor are inputs to the branch one, channel C
and D of Intel® SMI links.
Intel
SMI
1
NB
I
C/D
P/N
[13:0]
Interface Branch
Name
North
Input
Channe Differential Lane
Number Bound
l
Pair
Number
Polarity
Positive/
Negative
Example: FBD1NBIAP[0] Intel SMI branch 1, North bound data input lane 0 signal of
channel A and positive bit of the differential pair.
I
These differential pair clock signals generated from the branch one, channel C and D
of Intel® SMI links are input to the Intel Xeon Processor E7-8800/4800/2800
Product Families processor.
Intel
SMI
1
NB
I
CLK
C/D
P/N
Interface Branch
Name
North
Input
Clock
Channel Differential
Pair
Number Bound
Polarity
Positive/
Negative
Example: FBD1NBICLKAP0 Intel SMI branch 1, Northbound clock input signal of
channel A and positive bit of the differential pair.
O
These differential pair output data signals generated from Intel Xeon Processor E7-
8800/4800/2800 Product Families processor to the branch one, channel C and D of
Intel® SMI links.
Intel
SMI
1
NB
O
C/D
P/N
[10:0]
Interface Branch
Name
North
Output
Channel Differential Lane
Number Bound
Pair
Number
Polarity
Positive/
Negative
Example: FBD1SBOAP[0] Intel SMI branch 1, South bound data Output lane 0 signal
of channel A and positive bit of the differential pair.
106
Datasheet Volume 1 of 2
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