PI6C105H 查看數據表（PDF） - Pericom Semiconductor

零件编号

产品描述 (功能)

生产厂家

PI6C105H

Precision Clock Synthesizer for Mobile PCs

Pericom Semiconductor 

PI6C105 111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222

Precision Clock Synthesizer

for Mobile PCs

Features

• Two copies of CPU clock with VDD of 2.5V ±5%

• 100 MHz or 66 MHz operation

• Six copies PCI clock (synchronous with CPU clock) 3.3V

• One copy of Ref. clock @ 14.31818 MHz (3.3VTTL)

• 48 MHz USB Clock, 24 MHz Super I/O clock

• I2C Serial Configuration Interface

• Spread Spectrum Modulation for CPUCLK, and PCICLK

• Low-cost 14.31818 MHz crystal oscillator input

• Power management control

• Isolated core VDD, VSS pins for noise reduction

• 28-pin SSOP and SOIC package (H)

Description

The PI6C105 is a high-speed, low-noise clock generator designed

to work with the PI6C18x family of clock buffers to meet all clock

needs for Mobile Intel Architecture platforms. CPU and chipset

clock frequencies of 66.6 MHz and 100 MHz are supported.

Split supplies of 3.3V and 2.5V are used. The 3.3V power supply

powers a portion of the I/O and the core. The 2.5V is used to power

the remaining outputs. 2.5V signaling follows JEDEC standard

8-X. Power sequencing of the 3.3V and 2.5V supplies is not

required.

An asynchronous PWR_DWN# signal may be used to power down

(or up) the system in an orderly manner.

Block Diagram

Pin Configuration

XTAL_IN

XTAL_OUT

Spread#

SEL100/66#

SDATA

SCLK

REF

OSC

PLL1

I2C

PLL2

REF

CPU_STOP#

DIV

PCI_STOP#

2 CPUCLK

[0:1]

5 PCICLK

[1:5]

PCICLK_F

48 MHz

÷2

24 MHz

XTAL_IN 1

XTAL_OUT 2

VSSPCI 3

PCICLK_F 4

PCICLK1 5

PCICLK2 6

PCICLK3 7

PCICLK4 8

VDDPCI 9

PCICLK5 10

VDDP2 11

48M/SPREAD# 12

VSSP2 13

24M/SEL100/66# 14

28-Pin

H

28 VSSREF

27 VDDREF

26 REF

25 VDDCPU

24 CPUCLK0

23 CPUCLK1

22 VSSCPU

21 VDDCORE

20 VSSCORE

19 PCI_STOP#

18 CPU_STOP#

17 PWR_DWN#

16 SDATA

15 SCLK

248

PS8316 03/15/99

Share Link: