82801BA Datasheet, PDF (62/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

System Clock Domains
Figure 4-2. Conceptual System Clock Diagram (82801BA ICH2 and 82801BAM ICH2-M)
Processor(s)
Hclock(s) (66/100/133 MHz)
Host
Controller
HClock (66/100/133 MHz)
AGP
AGP Clock (66 MHz)
AGP Clock (66 MHz)
IC H 2
M em ory
RDRAM
Clock
G en e ra to r
66 MHz
33 MHz
APIC CLK
14.31818 MHz
48 MHz
STP_CPU# (ICH2-M only)
STP_PCI# (ICH2-M only)
SLP_S1# (ICH2-M only)
Clock
G en e ra to r
2
2 or 3
PCI Clocks
(33 MHz)
14.31818 MHz
48 MHz
32 kHz
XTAL
12.288 MHz
50 MHz
AC'97 Codec(s)
LAN Connect
SUSCLK# (32 kHz)
4-2
82801BA ICH2 and 82801BAM ICH2-M Datasheet