307013-003 Datasheet, PDF (96/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Intel^® ICH7 and System Clock Domains
Figure 4-1. Desktop Only Conceptual System Clock Diagram
Intel^®
ICH7
32 kHz
XTAL
33MHz
14.31818MHz
48.000MHz
Clock
Gen.
100MHz
Di ff.Pa i r
SATA 100 MHzDiff. Pair
DMI 100 MHzDiff. Pair
1 to 6
Differential
ClockFan
OutDev ice
PCI
Cl o cks
(33 MHz)
14.31818MHz
48.000MHz
PCI Express
100MHz
Diff. Pairs
50MHz
LAN Connect
12.288MHz
24MHz
AC ’97 Codec(s)
Hi ghDefi ni ti onA udi oCodec (s )
SUSCLK# (32 kHz)
Figure 4-2. Mobile Only Conceptual Clock Diagram
Intel^®
ICH7-M
32 kHz
XTAL
33 MHz
14.31818 MHz
48.000 MHz
STP_CPU#
STP_PCI#
Clock
Gen.
PCI Clocks
(33 MHz)
14.31818 MHz
48 MHz
100 MHz Diff. Pair
SATA 100 MHz Diff. Pair
DMI 100 MHz Diff. Pair
1 to 6
Differential
Clock Fan
Out Device
PCI Express
100 MHz
Diff. Pairs
50 MHz
LAN Connect
12.288 MHz
24 MHz
AC ’97 Codec(s)
High Definition Audio Codec(s)
SUSCLK# (32 kHz)
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Intel ^® ICH7 Family Datasheet