Intel G550 CM8062307261218 Manual De Usuario
Los códigos de productos
CM8062307261218
Intel
®
Celeron
®
Processor on 0.13 Micron Process in the 478-Pin Package Datasheet
79
Pin Listing and Signal Definitions
TRST#
Input
TRST# (Test Reset) resets the Test Access Port (TAP) logic. TRST# must be
driven low during power on Reset. This can be done with a 680
driven low during power on Reset. This can be done with a 680
Ω
pull-down
resistor.
VCCA
Input
VCCA provides isolated power for the internal processor core PLLs. Refer to
for the appropriate Platform Design Guide for details on implementation.
VCCIOPLL
Input
VCCIOPLL
provides isolated power for internal processor system bus PLLs.
Follow the guidelines for VCCA, and refer to the appropriate Platform Design
Guide for details on implementation.
Guide for details on implementation.
VCC_SENSE
Output
VCC_SENSE is an isolated low impedance connection to processor core power
(VCC). It can be used to sense or measure power near the silicon with little
noise.
(VCC). It can be used to sense or measure power near the silicon with little
noise.
VCCVID
Input
An independent 1.2 V supply must be routed to VCCVID pin for the Celeron
processor on 0.13 micron process Voltage Identification circuit.
processor on 0.13 micron process Voltage Identification circuit.
VID[4:0]
Output
VID[4:0] (Voltage ID) pins are used to support automatic selection of power
supply voltages (VCC). Unlike previous generations of processors, these are
open drain signals that are driven by the Celeron processor on 0.13 micron
process and must be pulled up to 3.3 V (max.) with 1 k
supply voltages (VCC). Unlike previous generations of processors, these are
open drain signals that are driven by the Celeron processor on 0.13 micron
process and must be pulled up to 3.3 V (max.) with 1 k
Ω
resistors. The voltage
supply for these pins must be valid before the VR can supply VCC to the
processor. Conversely, the VR output must be disabled until the voltage supply
for the VID pins becomes valid. The VID pins are needed to support the
processor voltage specification variations. See
processor. Conversely, the VR output must be disabled until the voltage supply
for the VID pins becomes valid. The VID pins are needed to support the
processor voltage specification variations. See
for definitions of these
pins. The VR must supply the voltage that is requested by the pins, or disable
itself.
itself.
VSSA
Input
VSSA is the isolated ground for internal PLLs.
VSS_SENSE
Output
VSS_SENSE is an isolated low impedance connection to processor core VSS. It
can be used to sense or measure ground near the silicon with little noise.
can be used to sense or measure ground near the silicon with little noise.
Table 36. Signal Description (Sheet 8 of 8)
Name
Type
Description