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PDF ICS952703 Data sheet ( Hoja de datos )

Número de pieza ICS952703
Descripción Programmable Timing Control Hub for K7 System
Fabricantes Integrated Circuit Systems　
Logotipo Integrated Circuit Systems Logotipo



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No Preview Available ! ICS952703 Hoja de datos, Descripción, Manual

Integrated
Circuit
Systems, Inc.
ICS952703
Preliminary Product Preview
Programmable Timing Control Hub for K7TM System
Recommended Application:
SiS741 style chipset with 964 South Bridge.
Output Features:
• 1 - Pair of differential open drain CPU outputs
• 1 - Single-ended open drain CPU output
• 1 - Pair of current mode differential serial reference clock
• 8 - PCICLK @ 3.3V including 2 PCI clock free running
• 2 - AGPCLK @ 3.3V
• 3 - REF @ 3.3V
• 2 - ZCLK @ 3.3V
• 2 - IOAPIC @ 2.5V
• 1 - 12_48MHz @ 3.3V
• 1 - 24_48MHz @ 3.3V
Key Specifications:
• CPU Output Jitter <250ps
• AGP Output Jitter <250ps
• ZCLK Output Jitter <250ps
• PCI Output Jitter <500ps
• CPU-AGP/PCI/ZCLK skew: 2.5ns~3.5ns
Features/Benefits:
• Selectable synchronous/asynchronous AGP/PCI
frequency
• Programmable output frequency.
• Programmable output divider ratios.
• Programmable output rise/fall time.
• Programmable output skew.
• Programmable spread percentage for EMI control.
• Watchdog timer technology to reset system
if system malfunctions.
• Programmable watch dog safe frequency.
• Support I2C Index read/write and block read/write
operations.
• Uses external 14.318MHz reference input.
Functionality
Pin Configuration
Bit4 Bit3 Bit2 Bit1 Bit0
FS3 FS2 FS1 FS0
CPU
MHz
SRC
MHz
ZCLK
MHz
0 0 0 0 0 200.00 100.00 133.33
0 0 0 0 1 200.01 100.00 133.34
0 0 0 1 0 200.97 100.00 133.98
0 0 0 1 1 190.11 100.00 126.74
0 0 1 0 0 100.00 100.00 133.33
0 0 1 0 1 100.00 100.00 133.34
0 0 1 1 0 100.99 100.00 134.66
0 0 1 1 1 95.00 100.00 126.66
0 1 0 0 0 166.66 100.00 133.33
0 1 0 0 1 166.65 100.00 133.32
0 1 0 1 0 161.59 100.00 129.27
0 1 0 1 1 151.97 100.00 121.57
0 1 1 0 0 133.33 100.00 133.33
0 1 1 0 1 133.34 100.00 133.34
0 1 1 1 0 133.98 100.00 133.98
0 1 1 1 1 126.66 100.00 126.66
1 0 0 0 0 206.02 100.00 137.35
1 0 0 0 1 210.00 100.00 140.00
1 0 0 1 0 214.06 100.00 142.70
1 0 0 1 1 217.90 100.00 145.27
1 0 1 0 0 103.01 100.00 137.35
1 0 1 0 1 105.00 100.00 140.00
1 0 1 1 0 106.99 100.00 142.65
1 0 1 1 1 109.01 100.00 145.35
1 1 0 0 0 164.66 100.00 131.73
1 1 0 0 1 167.91 100.00 134.33
1 1 0 1 0 171.22 100.00 136.98
1 1 0 1 1 174.38 100.00 139.50
1 1 1 0 0 137.32 100.00 137.32
1 1 1 0 1 140.00 100.00 140.00
1 1 1 1 0 142.67 100.00 142.67
1 1 1 1 1 145.33 100.00 145.33
AGP
MHz
66.66
66.67
66.99
63.37
66.66
66.67
67.33
63.33
66.66
66.66
64.64
60.79
66.66
66.67
66.99
63.33
68.67
70.00
71.35
72.63
68.67
70.00
71.33
72.68
65.86
67.17
68.49
69.75
68.66
70.00
71.34
72.66
PCI
MHz
33.33
33.33
33.49
31.69
33.33
33.33
33.66
31.67
33.33
33.33
32.32
30.39
33.33
33.33
33.49
31.67
34.34
35.00
35.68
36.32
34.34
35.00
35.66
36.34
32.93
33.58
34.24
34.88
34.33
35.00
35.67
36.33
VDDREF 1
48 VDDLAPIC
**FS0/REF0 2
47 IOAPIC1
**FS1/REF1 3
46 IOAPIC0
**Mode/REF2 4
GNDREF 5
45 GNDAPIC
44 VDDSRC
X1 6
43 SRCCLKT
X2 7
GNDZ 8
42 SRCCLKC
41 GND
ZCLK0 9
ZCLK1 10
VDDZ 11
SCLK 12
VDDPCI 13
*FS2/PCICLK_F0 14
*FS3/PCICLK_F1 15
PCICLK0 16
PCICLK1 17
GNDPCI 18
VDDPCI 19
PCICLK2 20
*(PCI_STOP#)PCICLK3 21
*(CPU_STOP#)PCICLK4 22
40 CPUCLKODT1
39 GNDCPU
38 CPUCLKODT0
37 CPUCLKODC0
36 AVDD
35 AGND
34 IREF
33 SDATA
32 GNDAGP
31 AGPCLK0
30 AGPCLK1
29 VDDAGP
28 AVDD48
27 12_48MHz/SEL12_48#MHz*
*(PD#)PCICLK5 23
26 24_48MHz/SEL24_48#MHz**~
GNDPCI 24
25 GND48
48-SSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
~ This output have 1.5X Drive Strength
0813B—05/17/05

1 page




ICS952703 pdf
Integrated
Circuit
Systems, Inc.
ICS952703
Preliminary Product Preview
Table1: Frequency Selection Table
Bit4 Bit3 Bit2 Bit1 Bit0
FS3 FS2 FS1 FS0
CPU
MHz
0 0 0 0 0 200.00
0 0 0 0 1 200.01
0 0 0 1 0 200.97
0 0 0 1 1 190.11
0 0 1 0 0 100.00
0 0 1 0 1 100.00
0 0 1 1 0 100.99
0 0 1 1 1 95.00
0 1 0 0 0 166.66
0 1 0 0 1 166.65
0 1 0 1 0 161.59
0 1 0 1 1 151.97
0 1 1 0 0 133.33
0 1 1 0 1 133.34
0 1 1 1 0 133.98
0 1 1 1 1 126.66
1 0 0 0 0 206.02
1 0 0 0 1 210.00
1 0 0 1 0 214.06
1 0 0 1 1 217.90
1 0 1 0 0 103.01
1 0 1 0 1 105.00
1 0 1 1 0 106.99
1 0 1 1 1 109.01
1 1 0 0 0 164.66
1 1 0 0 1 167.91
1 1 0 1 0 171.22
1 1 0 1 1 174.38
1 1 1 0 0 137.32
1 1 1 0 1 140.00
1 1 1 1 0 142.67
1 1 1 1 1 145.33
SRC
MHz
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
100.00
ZCLK
MHz
133.33
133.34
133.98
126.74
133.33
133.34
134.66
126.66
133.33
133.32
129.27
121.57
133.33
133.34
133.98
126.66
137.35
140.00
142.70
145.27
137.35
140.00
142.65
145.35
131.73
134.33
136.98
139.50
137.32
140.00
142.67
145.33
AGP
MHz
66.66
66.67
66.99
63.37
66.66
66.67
67.33
63.33
66.66
66.66
64.64
60.79
66.66
66.67
66.99
63.33
68.67
70.00
71.35
72.63
68.67
70.00
71.33
72.68
65.86
67.17
68.49
69.75
68.66
70.00
71.34
72.66
PCI
MHz
33.33
33.33
33.49
31.69
33.33
33.33
33.66
31.67
33.33
33.33
32.32
30.39
33.33
33.33
33.49
31.67
34.34
35.00
35.68
36.32
34.34
35.00
35.66
36.34
32.93
33.58
34.24
34.88
34.33
35.00
35.67
36.33
Spread %
0.5% down
0.35% center
0.35% center
0.35% center
0.5% down
0.35% center
0.35% center
0.35% center
0.5% down
0.35% center
0.35% center
0.35% center
0.5% down
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0.35% center
0813B—05/17/05
5

5 Page





ICS952703 arduino
Integrated
Circuit
Systems, Inc.
ICS952703
Preliminary Product Preview
Electrical Characteristics - CPUCLKT/C
TA = 0 - 70°C; VDD=3.3V +/-5%; CL = 10-20 pF (unless otherwise specified)
PARAMETER SYMBOL
CONDITIONS
Current Source
Output Impedance
Zo1
VO = Vx
Output High Voltage VOH3 IOH = -1 mA
Output Low Voltage VOL3 IOL = 1 mA
Rise Time
tr3 VOL = 0.175V, VOH = 0.525V
Fall Time
tf3 VOH = 0.175V VOL = 0.525V
Duty Cycle
dt3 VT = 50%
Skew
tsk3 VT = 50%
Jitter, Cycle to cycle tjcyc-cyc1 VT = 50%
MIN
3000
2.4
175
175
45
TYP
MAX UNITS
Ω
V
0.4
700 ps
700 ps
55 %
100 ps
150 ps
Electrical Characteristics - PCICLK
TA = 0 - 70°C; VDD = 3.3 V,+/-5%; CL = 30 pF
PARAMETER SYMBOL
CONDITIONS
Output High Voltage VOH1 IOH = -18 mA
Output Low Voltage VOL1 IOL = 9.4 mA
Output High Current
IOH1 VOH = 2.0 V
Output Low Current
Rise Time1
Fall Time1
Duty Cycle1
Skew1
IOL1 VOL = 0.8 V
tr1 VOL = 0.4 V, VOH = 2.4 V
tf1 VOH = 2.4 V, VOL = 0.4 V
dt1 VT = 1.5 V
tsk1 VT = 1.5 V
Jitter
tjcyc-cyc1
tjabs1
VT = 1.5 V
VT = 1.5 V
1Guaranteed by design, not 100% tested in production.
MIN TYP MAX UNITS
2.1 V
0.4 V
-22 mA
16 57 mA
2 ns
2 ns
45 55 %
500 ps
500 ps
500 ps
0813B—05/17/05
11

11 Page







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