IDT
®
PC MAIN CLOCK - CK540 1247C—06/16/11
Advance Information
9UMS9001
PC MAIN CLOCK - CK540
4
Functional Block Diagram
Power Groups
OSC
CPU/SRC/
PC
SS-PLL
LCD SS
PLL
Fixed
EXACT
48MHz
Control
Logic
X1
REF
PCI
SRC(3:0)
CPU(2:0)
LCD
DOT96MH
Z
48MHZ
X2
FSLC
FSLB
CKPWRGD#/PD
PCI_STOP#
CPU_STOP#
CLKREQ(3:0)#
ITP_EN
TESTSEL
TESTMODE
VDD3.3V VDDIO 1.05~3.3V GND
49 Low power outputs
53
Analog
53
35 Low power outputs
40
Analog
26 Low power outputs
27
PLL
19 22 DOT 96Mhz Low power outputs
17, 18
15
3
56
10
14
Pin Number
Xtal, REF
PCICLK
SRCCLK
LCDCLK
Description
Master Clock, Analog
USB 48
23
34
CPUCLK50
IDT
®
PC MAIN CLOCK - CK540 1247C—06/16/11
Advance Information
9UMS9001
PC MAIN CLOCK - CK540
5
Table 1: CPU Frequency Select Table
FS
L
C
1
B0b7
FS
L
B
1
B0b6
CPU
MHz
SRC
MHz
PCI
MHz
REF
MHz
U
SB
MHz
DOT
MHz
0 0 133.33
01Reserved
1 0 100.00
1 1 200.00
1. FS
L
C is a low-threshold input.Please see V
IL_FS
and V
IH_FS
spec ifications in
the Input/Supply/Common Output Parameters Table for correct values.
Also refer to the Test Clarification Table.
96.00
14.318 48.00 96.00
14.318 48.00
100.00
100.00 33.33
33.33
Table 3: IO_Vout select table
B5b2 B5b1 B5b0 IO_Vou
t
000
0.3V
001
0.4V
010
0.5V
011
0.6V
100
0.7V
101
0.8V
110
0.9V
111
1.0V
Table 2: LCD Quick Configuration
Pin 24/25
Spread
MHz %
0 0 0 0 100.00 0.25% Down Spread LCDCLK
0 0 0 1 100.00 0.5% Down Spread LCDCLK
0 0 1 0 100.00 1% Down Spread LCDCLK
0 0 1 1 100.00 1.25% Down Spread LCDCLK
0 1 0 0 100.00 1.5% Down Spread LCDCLK
0 1 0 1 100.00 2% Down Spread LCDCLK
0 1 1 0 100.00 2.5% Down Spread LCDCLK
0 1 1 1 100.00 3.0% Down Spread LCDCLK
1 0 0 0 100.00 0.25% Center Spread LCDCLK
1 0 0 1 100.00 0.5% Center Spread LCDCLK
1 0 1 0 100.00 1% Center Spread LCDCLK
1 0 1 1 100.00 1.25% Center Spread LCDCLK
1 1 0 0 100.00 1.5% Center Spread LCDCLK
1 1 0 1 100.00 2% Center Spread LCDCLK
1 1 1 0 100.00 2.5% Center Spread LCDCLK
1 1 1 1 100.00 3.0% Center Spread LCDCLK
CommentB1b0B1b1B1b3 B1b2
IDT
®
PC MAIN CLOCK - CK540 1247C—06/16/11
Advance Information
9UMS9001
PC MAIN CLOCK - CK540
6
Absolute Maximum Ratings
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS Notes
Maximum Supply Voltage VDDxxx_3.3 Supply Voltage 4.6 V 1,7
Maximum Supply Voltage VDDxxx_1.8 Supply Voltage 2.3 V 1,7
Maximum Supply Voltage VDDxxx_IO Low-Voltage Differential I/O Supply 3.8 V 1,7
Maximum Input Voltage V
IH
3.3V LVCMOS Inputs 4.6 V 1,7,8
Minimum Input Voltage V
IL
Any Input GND - 0.5 V 1,7
Storage Temperature Ts - -65 150
°
C1,7
Input ESD protection ESD prot Human Body Model 2000 V 1,7
Electrical Characteristics - Input/Supply/Common Output Parameters
PARAMETER SYMBOL CONDITIONS MIN MAX UNITS Notes
Ambient Operating Temp Tambient - 0 70 °C 1
Supply Voltage VDDxxx_3.3 Supply Voltage 3.135 3.465 V 1
Supply Voltage VDDxxx_1.8 Supply Voltage 1.71 1.89 V 1
Supply Voltage VDDxxx_IO Low-Voltage Differential I/O Supply 1.05 3.465 V 1
Input High Voltage V
IHSE
Single-ended inputs 2 V
DD
+ 0.3 V 1
Input Low Voltage V
ILSE
Single-ended inputs V
SS
- 0.3 0.8 V 1
Input Leakage Current I
IN
V
IN
= V
DD ,
V
IN
=
GND -5 5 uA 1
Input Leakage Current I
INRES
Inputs with pull or pull down
resistors
V
IN
= V
DD ,
V
IN
=
GND
-200 200 uA 1
Output High Voltage V
OHS E
Single-ended outputs, I
OH
= -1mA 2.4 V 1
Output Low Voltage V
OLSE
Single-ended outputs, I
OL
= 1 mA 0.4 V 1
Output High Voltage V
OHDI
F
Differential Outputs 0.7 0.9 V 1
Output Low Voltage V
OLDI
F
Differential Outputs 0.4 V 1
Low Threshold Input-
High Voltage (Test Mode)
V
IH_FS_TEST
3.3 V +/-5% 2 V
DD
+ 0.3 V 1
Low Threshold Input-
High Voltage
V
IH_FS
3.3 V +/-5% 0.7 1.5 V 1
Low Threshold Input-
Low Voltage
V
IL_FS
3.3 V +/-5% V
SS
- 0.3 0.35 V 1
Operating Supply Current I
DD_DEFAULT
3.3V supply, LCDPLL off 80 mA 1
I
DD_LCDEN
3.3V supply, LCDPLL enabled 100 mA 1
I
DD_IO
0.8V supply, Differential IO current,
all outputs enabled
25 mA 1
I
DD_PD3.3
3.3V supply, Power Down Mode 1 mA 1
I
DD_PDIO
0.8V IO supply, Power Down Mode 0.1 mA 1
Input Frequency F
i
V
DD
= 3.3 V 15 MHz 2
Pin Inductance L
p
in
7nH1
C
IN
Logic Inputs 1.5 5 pF 1
C
OU
T
Output pin capacitance 6 pF 1
C
INX
X1 & X2 pins 7 pF 1
Spread Spectrum Modulation
Frequency
f
SSMOD
Triangular Modulation 30 33 kHz 1
Power Down Current
Input Capacitance

9UMS9001AKLF

Mfr. #:
Manufacturer:
IDT
Description:
Clock Generators & Support Products CK540
Lifecycle:
New from this manufacturer.
Delivery:
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