ICS932S805C Datasheet, PDF (4/19 Pages) Integrated Device Technology – K8 Clock Chip for Serverworks HT2100 Servers

ICS932S805C
K8 Clock Chip for Serverworks HT2100 Servers
General Description
The ICS932S805 is a main clock synthesizer chip that, when paired with ICS9DB108, provides all clocks required by
Serverworks HT2100-based servers.
An SMBus interface allows full control of the device.
Block Diagram
X1
XTAL
X2
OSC.
FS(3:0)
PD#
SPREAD_EN
SDATA
SCLK
CONTROL
LOGIC
FIXED PLL
25MHz PLL
CPU/SRC/
PCI PLL
25M
DIV
CPU
DIV
PCI33
DIV
SRC
DIV1
REF (2:0)
48MHz(2:0)
25MHz(1:0)
CPUCLK8(6:0)
PCICLK(1:0)
SRCCLK(5:0)
Single-ended Terminations
Single-ended
Number of Series Resistor for Proper Termination
Output Strength Loads on Board Zo = 50 ohms Zo = 55 ohms Zo = 60 ohms
48MHz 1 Load
1
48MHz 2 Load
2
25MHz 1 Load
1
25MHz 2 Load
2
PCI 1 Load
1
PCI 2 Load
2
REF 1 Load
1
REF 2 Load
2
15
24
30
4.7
15
20
15
24
30
4.7
15
20
15
24
30
4.7
15
20
15
24
30
4.7
15
20
IDT^® K8 Clock Chip for Serverworks HT2100 Servers
4
1131D – 05/04/10