82801DB Datasheet, PDF (549/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

Package Information
Package Information
18
Figure 18-1 and Figure 18-2 illustrate the ICH4 421 BGA package. All dimensions are in
millimeters.
Figure 18-1. Intel^® ICH4 Package (Top and Side Views)
Pin A1 corner
0.127 A
Top View
31.00 ±0.20
26.00 ±0.25
-A-
-B-
Pin A1 Identifier
16.96 REF
31.00 ±0.20
26.00 ±0.25
45° Chamfer
(4 places)
3 X C1.00 Thru
16.96 REF
0.127 A
Side View
2.38 ±0.21
1.17 ±0.05
30°
0.61 ±0.06
0.60 ±0.10
Seating Plane (see Note 3)
Notes:
1. All dimensions are in millimeters.
2. All dimensions and tolerances conform to ANSI Y14.5M - 1982.
3. Primary Datum (-C-) and seating plane are defined by the sperical crowns of the solder balls.
0.15 C
0.15 -C-
Intel^® 82801DB ICH4 Datasheet
549