Intel ® 815 To 815G/Eg Signal Name Changes; Table 1. Intel 82815 To Intel 82815G Pin Name Changes - Intel 815EG Design Manual

Introduction
• Integrated Graphics Controller
 Full 2D/3D/DirectX acceleration
 Texture-mapped 3D with point sampled, bilinear, trilinear, and anisotropic filtering
 Hardware setup with support for strips and fans
 Hardware motion compensation assist for software MPEG/DVD decode
 Digital Video Out interface for support of digital displays and TV-Out
 PC99A/PC2001 compliant
 Integrated 230 MHz DAC
• Integrated Local Graphics Memory Controller (Display Cache)
 0 MB to 4 MB (via Graphics Performance Accelerator) using zero, one or two parts
 32-bit data interface
 133 MHz memory clock
 Supports only 3.3 V SDRAMs
• Packaging/Power
 544-ball mBGA CSP with local memory port
 1.85 V core and mixed 3.3 V, 1.5 V, and AGTL+ IO. Note that the 82801BA ICH2 has a
1.8 V requirement and the 82815EG GMCH has a 1.85 V requirement. Instead of using
separate voltage regulators to meet these requirements, a single voltage regulator can be
set to 1.795 V to 1.910 V. See Figure 98. Power Delivery Map.
®
1.4.2.2 Intel 815 to 815G/EG Signal Name Changes
Intel 82815G/EG pins associated with AGP signals have name changes. The following table shows
the old Intel 82815 signal name, the ball number, and the new Intel 82815G/EG signal name. New
designs for new 815G/EG boards should use pull-ups or pull-downs as indicated by the 815G/EG
signal name. 815 boards using 815GEG devices may leave the associated 815 pins in the original
815 configuration.
®
Table 1. Intel 82815 to Intel
®
Intel 815 Signal
Name
WBF#
AD_STB0
AD_STB0#
AD_STB1
AD_STB1#
SB_STB
SB_STB#
GRCOMP
AGPREF
G_GNT#
G_AD[24]
NOTES:
NC = No Connect. These pins should float
PU = Pull-up to 3.3 V through a weak pull-up resistor. (8.2 kΩ to 10 kΩ resistor.)
PD = Pull-down. These pins should be pulled down to ground through a weak pull- down resistor.
(8.2 kΩ to 10 kΩ resistor.)
PD40 = Pull-down to VSS using a 40
0.5VDDQ = Set to 50% of the VDDQ voltage supply level.
20
®
82815G Pin Name Changes
®
Ball# Intel 815G/EG
Signal Name
AB24 PU
M22 PD
L23 PU
U22 PD
V23 PU
Y23 PD
AA24 PU
J26 PD40
J24 0.5VDDQ
AD25 NC
V25 PD
resistor.
®
Intel 815EG Chipset Platform Design Guide
R