Product specifications

CN333 Data Sheet
Revision 1.0, January 5, 2005 -21- Pin Descriptions
Power Pin Descriptions
Analog Power / Ground
Signal Name Pin # I/O Signal Description
VCCA33HCK1
M1 P Power for Host CPU Clock PLL 1 (3.3V ±5%). 400 MHz for CPU / DRAM
frequencies of multiples of 100, 133 and 200 MHz.
GNDAHCK1
M2 P Ground for Host CPU Clock PLL 1. Connect to main ground plane through a
ferrite bead.
VCCA33HCK2
M4 P Power for Host CPU Clock PLL 2 (3.3V ±5%). 500 MHz for CPU / DRAM
frequencies of multiples of 166 MHz.
GNDAHCK2
M5 P Ground for Host CPU Clock PLL 2. Connect to main ground plane through a
ferrite bead.
VCCA33MCK
G28 P Power for Memory Clock PLL (3.3V ±5%)
GNDAMCK
G27 P Ground for Memory Clock PLL. Connect to main ground plane through a ferrite
bead.
VCCA33GCK
M3 P Power for AGP Clock PLL (3.3V ±5%)
GNDAGCK
M6 P Ground for AGP Clock PLL. Connect to main ground plane through a ferrite
bead.
VCCA15PLL1
N3 P Power for Graphics Controller PLL1 (1.5V ±5%).
GNDAPLL1
N4 P Ground for Graphics Controller PLL1. Connect to main ground plane through a
ferrite bead.
VCCA15PLL2
P4 P Power for Graphics Controller PLL2 (1.5V ±5%).
GNDAPLL2
P5 P Ground for Graphics Controller PLL2. Connect to main ground plane through a
ferrite bead.
VCCA15PLL3
N1 P Power for Graphics Controller PLL3 (1.5V ±5%).
GNDAPLL3
N2 P Ground for Graphics Controller PLL3. Connect to main ground plane through a
ferrite bead.
VCCA33DAC[1:2]
R4, U4 P Power for DAC. (3.3V ±5%)
GNDADAC[1:3]
R5, T4, U5 P Ground for DAC. Connect to main ground plane through a ferrite bead.
Digital Power / Ground
Signal Name Pin # I/O Signal Description
VTT
(see pin lists) P Power for CPU I/O Interface Logic (12 Pins). Voltage is CPU dependent. See
Design Guide for details.
VCC25MEM
(see pin lists) P Power for Memory I/O Interface Logic (20 Pins). 2.5V ±5%.
VCC15VL
AA14, AA15 P Power for V-Link I/O Interface Logic (2 Pins). 1.5V ±5%
VCC15AGP
(see pin lists) P Power for AGP Bus I/O Interface Logic (7 Pins). 1.5V ±5%
VCC33GFX
R10, T10, U10 P Power for Graphics I/O Logic (3 Pins). 3.3V ±5%
VCC15
(see pin lists) P Power for Internal Logic (51 Pins). 1.5V ±5%
VSUS15
AF21 P Suspend Power (1 Pin). 1.5V ±5%
GND
(see pin lists) P Digital Ground (164 Pins). Connect to main ground plane.