ICS9LPRS464 Datasheet, PDF (4/23 Pages) Integrated Device Technology – System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUs

ICS9LPRS464
System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUss
General Description
The ICS9LPRS464 is a main clock synthesizer chip that provides all clocks required for ATI RD/RS600-based systems. An SMBus
interface allows full control of the device.
Funtional Block Diagram
X1
XTAL
X2
OSC.
FIXED PLL
FS(2:0)
PD
CLKREQA#
CLKREQB#
CONTROL
PLL
CLKREQC#
LOGIC
RESET_IN#
SMBDAT
SMBCLK
HTT
DIV
CPU
DIV
SRC
DIV
ATIG
DIV
REF(2:0)
48MHz(1:0)
HTTCLK0
CPUCLK(1:0)
SRCCLK(5:0)
ATIGCLK(1:0)
IDT^TM/ICS^TM System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUs
4
1377A—04/07/08