Intel
®
Itanium
®
Processor 9300 Series and 9500 Series Datasheet
159
Signal Definitions
7
Signal Definitions
This Chapter provides an alphabetical listing of all Intel
®
Itanium
®
Processor 9300
Series and Intel
®
Itanium
®
Processor 9500 Series signals. The tables list the signal
directions (Input, Output, I/O) and signal descriptions.
For a complete pinout listing including processor specific pins, please refer to
Table 7-1.
Signal Definitions for the Intel
®
Itanium
®
Processor 9300 Series and Intel
®
Itanium
®
9500 Series (Sheet 1 of 8)
Name
Type
Description
BOOTMODE[1:0]
I
The BOOTMODE[1:0] inputs specify which way the Intel
®
Itanium
®
Processor 9300
Series and Intel
®
Itanium
®
Processor 9500 Series will boot. For details on the
modes, refer to the
Intel
®
Itanium
®
Processor 9300 Series External Design
Specification
or the
Intel
®
Itanium
®
Processor 9500 Series External Design
Specification
. To pull any of these inputs high, they should be strapped to VCCIO
through a pull-up resistor, and to pull these low, they should be strapped to GND.
These pins are sampled during all resets except warm-logic reset.
CPU_PRES[A|B]_N
I/O
CPU Present pads. These pins at the top of the package are part of a daisy chain
that indicates to the platform that the processor and Ararat are properly installed
into the socket.
CPU_PRES[1:4]_N
I/O
CPU Present Pads. These pads at the bottom of the package are part of a daisy
chain that indicates to the platform that the processor and Ararat are properly
installed into the socket. Motherboard routing guidelines for these pins are
documented in the
Intel
®
Itanium
®
9300 Series Processor and Intel
®
Itanium
®
Processor 9500 Series Platform Design Guide
.
CSI[5:0]R[P/N]CLK
I
The receive clock signals are inputs to the Intel
®
Itanium
®
Processor 9300 Series
and Intel
®
Itanium
®
9500 Series and are required to be the same frequency at
both ends but may differ by a fixed phase. An Intel
®
QuickPath Interconnect local
receiver port receives a forwarded clock from the transmitter side of the remote
port and vice-versa, to maintain timing reference at either end of the link.
Example: CSI4RPCLK represents port 5 clock receive signal and positive bit of the
differential pair.
CSI[5:0]T[P/N]CLK
O
These transmit clock signals are driven by the processor and are required to be the
same frequency at both ends but may differ by a fixed phase. An Intel
®
QuickPath
Interconnect local port transmit side sends a forwarded clock to the receive side of
the remote port and vice-versa, to maintain timing reference at either end of the
link.
Example: CSI4TPCLK represents port 5 clock transmit signal and positive bit of the
differential pair.
Intel
®
QuickPath
Interconnect
5:0
R
P/N
CLK0
Interface Name Port
Number
Receiver
Differential Pair
Polarity
Positive/
Negative
Clock0
Intel
®
QuickPath
Interconnect
5:0
T
P/N
CLK0
Interface Name Port Number
Transmitter
Differential
Pair
Polarity
Positive/
Negative
Clock0
Summary of Contents for BX80569Q9550 - Core 2 Quad 2.83 GHz Processor
Page 10: ...Introduction 10 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 22: ...Introduction 22 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 72: ...Electrical Specifications 72 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 118: ...Pin Listing 118 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 132: ...Mechanical Specifications 132 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 142: ...Thermal Specifications 142 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...
Page 170: ...170 Intel Itanium Processor 9300 Series and 9500 Series Datasheet ...