ICS9248AG-150LN IDT, Integrated Device Technology Inc, ICS9248AG-150LN Datasheet

IC FREQUENCY GENERATOR 48-TSSOP

ICS9248AG-150LN

Manufacturer Part Number
ICS9248AG-150LN
Description
IC FREQUENCY GENERATOR 48-TSSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Frequency Generatorr
Datasheet

Specifications of ICS9248AG-150LN

Input
Crystal
Output
Clock
Frequency - Max
200MHz
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
48-TSSOP
Frequency-max
200MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
9248AG-150LN
Frequency Generator for Multi-Processor Servers
Recommended Application:
ServerWorks Grand Champion Systems
Output Features:
Features:
Key Specifications:
Functionality
Analog Power Groups
VDD48, GND48 = 48MHz, PLL2
VDDA=VDD (core supply voltage 3.3V)
GNDA=Ground for core supply
Digital Power Group
VDDREF, GNDREF = REF, Xtal
0352G—08/04/06
S
E
L
8 - Differential CPU Clock Pairs @ 3.3V
1 - 3V 33MHz PCI clocks
1 - 48MHz clock
1 - Inverted 48MHz clock
1 - 14.318MHz reference output
Up to 200MHz frequency support
Support power management: Power Down Mode
Supports Spread Spectrum modulation: 0 to -0.5%
down spread.
Uses external 14.318MHz crystal
Select logic for Differential Swing Control, Test mode,
Tristate, Power down, Spread Spectrum.
External resistor for current reference
FS pins for frequency select
PCI Output jitter <500ps
CPU Output jitter <150ps
48MHz Output jitter <350ps
REF Output jitter < 1000ps
1
3
0
0
0
0
1
1
1
1
3
1 /
0
0
F
Integrated
Circuit
Systems, Inc.
S
0
0
0
0
1
1
1
1
0
F
S
0
0
0
0
1
1
1
1
1
1
1
1
R
A
r T
A
A
0
0
3
i t c
i t c
i t c
e
s i
0
0
3
s
M
M
a t
M
e v
e v
e v
r e
e t
H
H
H
e v
F
1
1
2
z
z
z
u
l l a
0
3
0
d
e T
e T
e T
0
3
0
n
M
M
M
t c
o
t s
t s
t s
u
H
H
H
o i
p t
M
M
M
z
z
z
n
u
o
o
o
s t
d
d
d
e
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e
Block Diagram
MULTSEL(1:0)
SEL100/133
SPREAD#
FS(1:0)
PD#
X2
X1
FS1/48MHz#
CPUCLKC0
CPUCLKC1
CPUCLKC2
CPUCLKC3
FS0/48MHz
CPUCLKT0
CPUCLKT1
CPUCLKT2
CPUCLKT3
SPREAD#
GNDCPU
GNDCPU
VDDCPU
VDDCPU
VDDCPU
GNDREF
VDDREF
PCICLK
XTAL
OSC
GND48
VDD48
Spectrum
PLL2
Spread
Control
Config.
Logic
PLL1
REF
Reg.
X1
X2
48-Pin SSOP and TSSOP
Pin Configuration
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
DIVDER
DIVDER
CPU
PCI
ICS9248-150
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
8
8
SEL100/133
GNDPCI
VDDA
GNDA
PD#
VDDCPU
CPUCLKT4
CPUCLKC4
GNDCPU
CPUCLKT5
CPUCLKC5
VDDCPU
CPUCLKT6
CPUCLKC6
GNDCPU
CPUCLKT7
CPUCLKC7
VDDCPU
MULTSEL0
MULTSEL1
GND
GNDI REF
I REF
VDDI REF
I REF
48MHz
PCICLK
48MHz#
REF
CPUCLKC (7:0)
CPUCLKT (7:0)

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ICS9248AG-150LN Summary of contents

Page 1

Integrated Circuit Systems, Inc. Frequency Generator for Multi-Processor Servers Recommended Application: ServerWorks Grand Champion Systems Output Features: • Differential CPU Clock Pairs @ 3.3V • 33MHz PCI clocks • 48MHz clock • 1 ...

Page 2

ICS9248-150 General Description ICS9248-150 is a main clock for ServerWorks Grand Champion Systems. Spread spectrum typically reduces system EMI by 8dB to 10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. ICS9248-150 employs a proprietary ...

Page 3

Truth Table ...

Page 4

ICS9248-150 CPUCLK Swing Select Functions ...

Page 5

Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Logic Inputs . . . . . . ...

Page 6

ICS9248-150 Electrical Characteristics - CPU 70°C; VDD=3.3V +/-5 PARAMETER SYMBOL Current Source 1 Zo Output Impedance Voltage High VHigh Voltage Low VLow Max Voltage Vovs Min Voltage Vuds 1 Rise Time t r2B 1 ...

Page 7

Electrical Characteristics - PCI 70°C; VDD=3.3V +/-5 PARAMETER SYMBOL Output Frequency Output Impedance R DSP1 1 Output High Voltage Output Low Voltage Output High Current ...

Page 8

ICS9248-150 PD# Timing Diagram The power down selection is used to put the part into a very low power state without turning off the power to the part. PD asynchronous active low input. This signal needs to be ...

Page 9

INDEX INDEX AREA AREA 45° 45° SEATING SEATING b PLANE PLANE .10 (.004) C .10 (.004) C 300 mil SSOP Package Ordering Information ICS9248yF-150LN-T Example: ...

Page 10

ICS9248-150 INDEX INDEX AREA AREA aaa 6.10 mm. Body, 0.50 mm. pitch TSSOP (0.020 mil) (240 mil) Ordering Information ICS9248yG-150LN-T Example: ICS XXXX ...

Page 11

Revision History Rev. Issue Date Description E 6/9/2005 Removed PCI Skew from Electrical Characteristics Table. F 3/29/2006 Updated Electrical Characteristics CPU Table. G 8/4/2006 Added LN to Ordering Information. 0352G—08/04/06 11 ICS9248-150 Page # 7 6 9-10 ...

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