IDT
TM
Progammable Timing Control Hub
TM
for Next Gen P4
TM
Processor 701J—01/25/10
ICS952601
Programmable Timing Control Hub
TM
for Next Gen P4
TM
Processor
4
General Description
Block Diagram
Power Groups
ICS952601 follows Intel CK409 Yellow Cover specification. This clock synthesizer provides a single chip solution for next
generation P4 Intel processors and Intel chipsets. ICS952601 is driven with a 14.318MHz crystal. It generates CPU outputs up
to 200MHz. It also provides a tight ppm accuracy output for Serial ATA support.
I REF
PLL2
Frequency
Dividers
Programmable
Spread
PLL1
Programmable
Frequency
Dividers
STOP
Logic
48MHz, USB, DOT, VCH
X1
X2
XTAL
SDATA
SCLK
CPU_STOP#
PCI_STOP#
Vtt_PWRGD#
PD#
FS_A
FS_B
Control
Logic
REF (1:0)
CPUCLKT (2:0)
CPUCLKC (2:0)
SRCCLKT0
SRCCLKC0
3V66(4:0)
PCICLK (6:0)
PCICLKF (2:0)
VDD GND
3 6 Xtal, Ref
24 25 3V66 [0:3]
10,16 11,17 PCICLK outputs
36 39 SRCCLK outputs
55 54 Master clock, CPU Analog
34 33 48MHz, PLL, SCLK, SDATA
N/A 53 IREF
48, 42 45 CPUCLK clocks
Description
Pin Number
IDT
TM
Progammable Timing Control Hub
TM
for Next Gen P4
TM
Processor 701J—01/25/10
ICS952601
Programmable Timing Control Hub
TM
for Next Gen P4
TM
Processor
5
Absolute Maximum Ratings
Symbol Parameter Min Max Units Notes
VDD_A 3.3V Core Supply Voltage VDD + 0.5V V
VDD_In 3.3V Logic Input Supply Voltage GND - 0.5 VDD + 0.5V V
Ts Storage Temperature -65 150 °C
Tambient Ambient Operating Temp 0 70 °C
Tcase1 Case Temperature 1 115 °C 1
Tcase2 Case Temperature 2 94 °C 2
ESD prot Input ESD protection human body model 2000 V
1. This case temperature limits the junction temperature to <150 °C for package reliabilty
2. This case temperature limits the junction temperature to <125 °C for long term silicon reliability
Electrical Characteristics - Input/Supply/Common Output Parameters
T
A
= 0 - 70°C; Supply Voltage V
DD
= 3.3 V +/-5%
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
Input High Voltage V
IH
3.3 V +/-5% 2 V
DD
+ 0.3 V
Input MID Voltage V
MID
3.3 V +/-5% 1 1.8 V
Input Low Voltage V
IL
3.3 V +/-5% V
SS
- 0.3 0.8 V
Input High Current I
IH
V
IN
= V
D
D
-5 5 uA
I
IL1
V
IN
= 0 V; Inputs with no pull-
up resistors
-5 uA
I
IL2
V
IN
= 0 V; Inputs with pull-up
resistors
-200 uA
Operating Supply Current I
DD3. 3OP
Full Active, C
L
= Full load;
258
350 mA
all diff pairs driven 29 35 mA
all differential pairs tri-stated 0.3 12 mA
Input Frequency
3
F
i
V
DD
= 3.3 V 14.31818 MHz 3
Pin Inductance
1
L
p
in
7nH1
C
IN
Logic Inputs 5 pF 1
C
OUT
Output pin capacitance 6 pF 1
C
INX
X1 & X2 pins 5 pF 1
Clk Stabilization
1,2
T
STAB
From V
DD
Power-Up or de-
assertion of PD# to 1st clock
1.8 ms 1,2
Modulation Frequency Triangular Modulation 30 33 kHz 1
Tdrive_SRC
SRC output enable after
PCI_Stop# de-assertion
15 ns 1
Tdrive_PD#
CPU output enable after
PD# de-assertion
300 us 1
Tfall_Pd# PD# fall time of 5 ns 1
Trise_Pd# PD# rise time of 5 ns 2
Tdrive_CPU_Stop#
CPU output enable after
CPU_Stop# de-assertion
10 us 1
Tfall_CPU_Stop# PD# fall time of 5 ns 1
Trise_CPU_Stop# PD# rise time of 5 ns 2
SMBus Voltage V
D
D
2.7 5.5 V 1
Low-level Output Voltage V
OL
@ I
PULLUP
0.4 V 1
Current sinking at V
OL
= 0.4 V I
PULLUP
4mA1
SCLK/SDATA
Clock/Data Rise Time
3
T
RI2C
(Max VIL - 0.15) to (Min VIH + 0.15) 1000 ns 1
SCLK/SDATA
Clock/Data Fall Time
3
T
FI2C
(Min VIH + 0.15) to (Max VIL - 0.15) 300 ns 1
1
Guaranteed b
y
desi
g
n, not 100% tested in production.
2
See timing diagrams for timing requirements.
I
DD3. 3PD
3
Input frequency should be measured at the REF output pin and tuned to ideal 14.31818MHz to meet ppm frequency
accuracy on PLL outputs.
Input Capacitance
1
Input Low Current
Powerdown Current
IDT
TM
Progammable Timing Control Hub
TM
for Next Gen P4
TM
Processor 701J—01/25/10
ICS952601
Programmable Timing Control Hub
TM
for Next Gen P4
TM
Processor
6
Electrical Characteristics - CPU & SRC 0.7V Current Mode Differential Pair
T
A
= 0 - 70°C; V
DD
= 3.3 V +/-5%; C
L
=2pF
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NOTES
Current Source Output
Impedance
Zo
1
V
O
= V
x
3000
1
Voltage High VHigh 660 770 850 1
Voltage Low VLow -150 5 150 1
Max Volta
g
e Vovs 756 1150 1
Min Volta
g
e Vuds -300 -7 1
Crossin
g
Volta
g
e (abs) Vcross(abs) 250 350 550 mV 1
Crossing Voltage (var) d-Vcross
Variation of crossing over all
ed
g
es
12 140 mV 1
Lon
g
Accuracy ppm see Tperiod min-max values -300 300 ppm 1,2
200MHz nominal 4.9985 5.0000 5.0015 ns 2
200MHz spread 4.9985 5.0266 ns 2
166.66MHz nominal 5.9982 6.0000 6.0018 ns 2
166.66MHz spread 5.9982 6.0320 ns 2
133.33MHz nominal 7.4978 7.5000 7.5023 ns 2
133.33MHz spread 7.4978 5.4000 ns 2
100.00MHz nominal 9.9970 10.0000 10.0030 ns 2
100.00MHz spread 9.9970 10.0533 ns 2
200MHz nominal 4.8735 ns 1,2
166.66MHz nominal/spread 5.8732 ns 1,2
133.33MHz nominal/spread 7.3728 ns 1,2
100.00MHz nominal/spread 9.8720 ns 1,2
Rise Time t
r
V
OL
= 0.175V, V
OH
= 0.525V 175 332 700 ps 1
Fall Time t
f
V
OH
= 0.525V V
OL
= 0.175V 175 344 700 ps 1
Rise Time Variation d-t
r
30 125 ps 1
Fall Time Variation d-t
f
30 125 ps 1
Duty Cycle d
t3
Measurement from differential
wavefrom
45 49 55 % 1
Skew t
sk3
V
= 50% 8 100 ps 1
Jitter, Cycle to cycle t
jcyc-cyc
Measurement from differential
wavefrom
37 125 ps 1
1
Guaranteed by desi
g
n, not 100% tested in production.
SRC clock outputs run at only 100MHz or 200MHz, specs for 133.33 and 166.66 do not apply to SRC clock pair.
2
All Long Term Accuracy and Clock Period specifications are guaranteed with the assumption that Ref output is at
14.31818MHz
TperiodAverage period
Absolute min period T
absmin
Statistical measurement on
single ended signal using
oscilloscope math function.
mV
Measurement on single ended
si
g
nal usin
g
absolute value.
mV

952601EGLF

Mfr. #:
Manufacturer:
IDT
Description:
Clock Generators & Support Products PC MAIN CLOCK
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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