ICS950508
ICS950508 is Programmable Timing Control Hub manufactured by Renesas.
Features
:
- 2
- CPUs @ 2.5V
- 13
- SDRAM @ 3.3V
- 3
- 3V66 @ 3.3V
- 8
- PCI @3.3V
- 1
- 24/48MHz@ 3.3V
- 1
- 48MHz @ 3.3V fixed
- 1
- REF @3.3V, 14.318MHz
Features
/Benefits:
- Programmable output frequency.
- Programmable output divider ratios.
- Programmable output rise/fall time.
- Programmable output skew.
- Programmable spread percentage for EMI control.
- Watchdog timer technology to reset system if system malfunctions.
- Programmable watch dog safe frequency.
- Support I2C Index read/write and block read/write operations.
- Uses external 14.318MHz crystal.
Key Specifications:
Pin Configuration
VDDREF 1 X1 2 X2 3
GND 4 GND 5 3V66_0 6 3V66_1 7 3V66_2 8 VDD3V66 9 VDDPCI 10 1- FS0/PCICLK0 11 1- FS1/PCICLK1 12 1- SEL24_48#/PCICLK2 13 GND 14 PCICLK3 15 PCICLK4 16 PCICLK5 17 VDDPCI 18 PCICLK6 19 PCICLK7 20 GND 21 Vtt_PWRGD/PD# 22 SCLK 23 SDATA 24 VDDSDR 25 SDRAM11 26 SDRAM10 27 GND 28
56 REF0/FS41- 55 VDDLAPIC 54 IOAPIC 53 VDDLCPU 52 CPUCLK0 51 CPUCLK1 50 GND 49 GND 48 SDRAM0 47 SDRAM1 46 SDRAM2 45 VDDSDR 44 SDRAM3 43 SDRAM4 42 SDRAM5 41 GND 40 SDRAM6 39 SDRAM7 38 SDRAM_F 37 VDDSDR 36 GND 35 24_48MHz/FS2- 34 48MHZ/FS3- 33 VDD48 32 VDDSDR 31 SDRAM8 30 SDRAM9 29 GND
56-Pin 300-mil SSOP
1. These pins will have 1.5 to 2X drive strength.
- Internal Pull-up resistor of 120K to VDD
- CPU Output Jitter: <250ps
- IOAPIC Output Jitter: <500ps
- 48MHz, 3V66, PCI Output Jitter: <500ps
Block Diagram
- Ref Output Jitter....
