ICS9248-192
ICS9248-192 is Frequency Timing Generator for Transmeta Systems manufactured by Integrated Circuit Systems.
Integrated Circuit Systems, Inc.
Frequency Timing Generator for Transmeta Systems
Remended Application: Transmeta Output Features
:
- 1CPU(2.5V or 3.3V selectable) up to 66.6MHz & overclocking of 66MHz.
- -
- - 6 PCI (3.3V) @ 33.3MHz (all are free running selectable). 1 REF (3.3V) at 14.318MHz. 1 48MHz (3.3V). 1 24_48MHz selectable output.
Pin Configuration
GNDREF X1 X2 PD# PCICLK0 PCICLK1 PCICLK2 GNDPCI VDDPCI PCICLK3 PCICLK4 PCICLK5 SDATA SCLK
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Features
:
- Supports Spread Spectrum modulation for CPU and PCI clocks, default -0.4 downspread.
- Efficient Power management scheme through stop clocks and power down modes.
- Uses external 14.318MHz crystal, no external load cap required for CL=18p F crystal.
- 28-pin TSSOP package, 4.40mm (173mil). Skew Characteristics:
- CPU
- CPU <175ps
- PCI
- PCI < 500ps
- CPU(early)
- PCI = 1.5ns
- 4ns.
28 27 26 25 24 23 22 21 20 19 18 17 16 15
VDDREF REF CPU_STOP# VDDLCPU GNDLCPU CPUCLK0 PCI_STOP# GND_Core VDD_Core SEL66/60# VDD48 GND48 48MHz/CPU3.3v_2.5V#sel 24-48MHz/Sel48_24#
28-Pin TSSOP
Block Diagram
PLL2 /2 X1 X2 XTAL OSC PLL1 Spread Spectrum 48MHz 24_48MHz
CPU...
