ics9248-131 Integrated Device Technology, ics9248-131 Datasheet

no-image

ics9248-131

Manufacturer Part Number
ics9248-131
Description
Frequency Generator & Integrated Buffers For Celeron & Pii/iii
Manufacturer
Integrated Device Technology
Datasheet
Block Diagram
SDRAM_STOP#
Frequency Generator & Integrated Buffers for Celeron & PII/III™
9248-131 Rev B 7/17/00
CPU2.5_3.3#
CPU_STOP#
AGP-STOP#
PCI_STOP#
BUFFERIN
FS (2:0)
SDATA
MODE
SCLK
PD#
X2
X1
XTAL
OSC
Spectrum
PLL2
Spread
Control
Config.
PLL1
Logic
Reg.
DIVDER
DIVDER
DIVDER
CPU
AGP
PCI
Stop
Stop
Stop
13
2
3
5
48MHz
CPUCLK (2:0)
PCICLK (4:0)
PCICLK_F
AGP (1:0)
AGP_F
SDRAM (12:0)
REF
*CPU_STOP#/SDRAM11
*PCI_STOP#/SDRAM10
*AGP_STOP#/SDRAM9
Functionality
Power Groups
*REF0/CPU2.5_3.3#
FS2 FS1 FS0
1
1
1
1
0
0
0
0
*PCICLK_F/FS1
*PD#/SDRAM8
*PCICLK0/FS2
BUFFERIN
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.
PCICLK1
PCICLK2
PCICLK3
PCICLK4
VDDSDR
1
1
0
0
1
1
0
0
VDDPCI
SDATA
VDDA
VDDF
SCLK
GND
GND
GND
GND
X1
X2
1
0
1
0
1
0
1
0
Pin Configuration
CPU, SDRA M
10
12
13
14
15
16
17
18
19
20
21
22
23
24
11
1
2
3
4
5
6
7
8
9
48-Pin SSOP
(MHz)
95.25
96.22
66.67
83.3
91.5
100
97
60
Pentium is a trademark of Intel Corporation
I
2
C is a trademark of Philips Corporation
ICS9248-131
(MHz)
33.33
31.75
33.30
32.33
30.50
32.07
33.33
30.00
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
PCI
VDDAGP
AGP0
AGP1
GND
CPUCLK0
CPUCLK1
VDDL
CPUCLK2
SDRAM12
GND
SDRAM0
SDRAM1
VDDSDR
SDRAM2
SDRAM3
GND
SDRAM4
SDRAM5
VDDSDR
SDRAM6
SDRAM7
GND
48MHz/FS0*
AGP_F/MODE*
(MHz)
66.67
63.50
66.60
64.66
61.00
64.15
66.67
60.00
AGP

Related parts for ics9248-131

ics9248-131 Summary of contents

Page 1

... 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. ICS9248-131 Pin Configuration 1 48 ...

Page 2

... ICS9248-131 Pin Descriptions ...

Page 3

... ICS9248-131 ...

Page 4

... ICS9248-131 Serial Configuration Command Bitmap Bit Description Bit7 Bit2 Spread Spectrum Method 0,0 +/- 0.25% Center Spread Spectrum Modulation Bit 7,2 0,1 +/- 0.15% Center Spread Spectrum Modulation 1 -0.5 Down Spread Spectrum Modulation 1,1 +/- 0.375% Center Spread Spectrum Modulation Bit6 Bit5 Bit4 CPU Clock 111 100 110 95.25 101 83.3 Bit 6:4 ...

Page 5

... ICS9248-131 ...

Page 6

... ICS9248-131 Absolute Maximum Ratings Electrical Characteristics - Input/Supply/Common Output Parameters 70º C; Supply Voltage PARAMETER SYMBOL Input High Voltage V Input Low Voltage V Input High Current I Input Low Current I IL1 Input Low Current I IL2 I Operating Supply Current DD3.3OP Input frequency Input Capacitance ...

Page 7

... *( 1.5 V ICS9248-131 MIN TYP MAX UNITS 13 13 2.5 V 0 130 250 ps 130 250 ps MIN TYP MAX UNITS 13 ...

Page 8

... ICS9248-131 Electrical Characteristics - PCI 70C 3.3V +/-5 DDL PARAMETER SYMBOL 1 Output Impedance R DSP2B 1 Output Impedance R DSN2B Output High Voltage V OH1 Output Low Voltage V OL1 I Output High Current OH1 I Output Low Current OL1 1 Rise Time Fall Time Duty Cycle ...

Page 9

... V =V *(0. *( ICS9248-131 MIN TYP MAX UNITS 12 24. 23.08 55 2.4 V 0 100 250 ps 120 250 ps 500 850 ps MIN TYP ...

Page 10

... ICS9248-131 Shared Pin Operation - Input/Output Pins Programming Header Via to Gnd Device Pad Via to VDD 2K 8.2K Clock trace to load Series Term. Res. Fig. 1 ...

Page 11

... Byte 4 Byte 5 Stop Bit 2 C serial interface information How to Read: Controller (Host) ACK ACK ACK ACK ACK ACK ACK ACK ACK ICS9248-131 How to Read: ICS (Slave/Receiver) Start Bit Address D3 (H) ACK Byte Count ACK Byte 0 ACK Byte 1 ACK Byte 2 ACK Byte 3 ...

Page 12

... ICS9248-131 AGP_STOP# Timing Diagram ...

Page 13

... CPU_STOP# Timing Diagram INTERNAL CPUCLK PCICLK CPU_STOP# PCI_STOP# (High) CPUCLK, AGP SDRAM ICS9248-131 ...

Page 14

... ICS9248-131 PCI_STOP# Timing Diagram ...

Page 15

... PD# Timing Diagram PD# CPUCLK AGP PCICLK VCO Crystal ICS9248-131 ...

Page 16

... ICS9248-131 Ordering Information ICS9248yF-131-T ICS XXXX PPP - T SY MBOL In Millimeters COMMON DIMENSIONS COMMON DIMENSIONS MIN 2.413 2.794 A 1 0.203 0.406 b 0.203 0.343 c 0.127 0.254 SEE V A RIA TIONS D E 10.033 10.668 E1 7.391 7.595 e 0.635 BA SIC h 0.381 0.635 L 0.508 1.016 ...

Related keywords