ics9148-47 ETC-unknow, ics9148-47 Datasheet

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ics9148-47

Manufacturer Part Number
ics9148-47
Description
Pentium/protm System Clock Chip
Manufacturer
ETC-unknow
Datasheet
Pentium/Pro
General Description
Block Diagram
9148-47 Rev D 08/04/98
2
TM
System Clock Chip
ICS reserves the right to make changes in the device data identified in this
publication without further notice. ICS advises its customers to obtain the latest
version of all device data to verify that any information being relied upon by the
customer is current and accurate.
Features
Power Groups
Ground Groups
Pin Configuration
28 pin SOIC
Pentium is a trademark on Intel Corporation.
ICS9148-47

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ics9148-47 Summary of contents

Page 1

... Pentium is a trademark on Intel Corporation. ICS reserves the right to make changes in the device data identified in this publication without further notice. ICS advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate. ICS9148-47 ...

Page 2

... ICS9148-47 Pin Descriptions PIN NUMBER PIN NAME GND2 4 PCICLK_F 10, 11 PCICLK (0: VDD2 12 VDD3 13 48MHz 14 24/48MHz 15 GND3 16 SEL100/66.6# 17 SCLK 18 SDATA 19 GND 20 VDD 21, 22 CPUCLK (1:0) 23 VDDL 24 IOAPIC 25 VDDL 26 VDD1 27 REF0/SEL 48# 28 GND1 TYPE DESCRIPTION XTAL_IN 14.318MHz Crystal input, has internal 33pF load ...

Page 3

... ACK dummy A(6:0) & R/W# command code D2 (H) How to Read: • (H) • • Clock Generator Address (7 bits) Byte ACK A(6:0) & R/W# Count D3( bits Data Byte ACK dummy Byte ACK count Data Byte Data Byte ACK ACK 1 ICS9148-47 Data Byte ACK ACK ...

Page 4

... ICS9148-47 Serial Bitmap Bit Description 7 (Reserved) Bit CPU PCI 654 000 68.5 34.25 ±0.5% Center 001 75.0 37.5 ±0.5% Center 010 83.3 41.6 ±0.5% Center 6:4 011 66.6 33.3 ±0.5% Center 100 103 34.3 ±0.5% Center 101 112 37.3 ±0.5% Center 110 133.3 44.43 ±0.5% Center 111 100 33.33 ±0.5% Center 0 - Frequency is selected by hardware select 3 SEL100/66 ...

Page 5

... Select @ 100MHz pF; With input address to Vdd or GND 3 Logic Inputs X1 & X2 pins To 1st crossing of target Freq. From 1st crossing to 1% target Freq. From target Freq 1 ICS9148-47 MIN TYP MAX UNITS -0.3 0 0.1 5 ...

Page 6

... ICS9148-47 Electrical Characteristics - Input/Supply/Common Output Parameters 70C; Supply Voltage V = 3.3 V +/-5 PARAMETER SYMBOL Operating I DD2.5OP66 Supply Current I DD2.5OP100 Power Down Supply I DD2.5PD Current t CPU-AGP 1 Skew t CPU-PCI2 1 Guaranteed by design, not 100% tested in production. Electrical Characteristics - CPUCLK 70C 3.3 V +/-5 ...

Page 7

... L CONDITIONS ICS9148-47 MIN TYP MAX UNITS 2.4 3.1 V 0.1 0.4 V - 140 500 ps 17 150 ps -500 70 500 ps MIN ...

Page 8

... ICS9148-47 Electrical Characteristics - 48, 24 MHz 70C 3.3 V +/-5 DDL PARAMETER SYMBOL Output High Voltage V OH5 Output Low Voltage V OL5 Output High Current I OH5 Output Low Current I OL5 1 Rise Time Fall Time Duty Cycle Jitter, One Sigma ...

Page 9

... ICS reserves the right to make changes in the device data identified in this publication without further notice. ICS advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate. ICS9148-47 28L 0.704 ...

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