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PDF ICS950402 Data sheet ( Hoja de datos )
| Número de pieza | ICS950402 | |
| Descripción | AMD - K8 System Clock Chip | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ICS950402 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
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Integrated
Circuit
Systems, Inc.
ICS950402
AMD - K8™ System Clock Chip
Recommended Application:
AMD K8 System Clock with AMD or VIA Chipset
Pin Configuration
Output Features:
• 2 - Differential pair push-pull CPU clocks @
3.3V
• 9 - PCICLK (Including 1 free running) @3.3V
*FS0/REF0 1
VDDREF 2
X1 3
X2 4
GND 5
48 REF1/FS1*
47 GND
46 VDDREF
45 REF2/FS2*
44 Reset#
• 4 - Selectable PCICLK/HTTCLK @3.3V
• 1 - 48MHz, @3.3V fixed.
• 1 - 24/48MHz @ 3.3V
• 3 - REF @3.3V, 14.318MHz.
Features:
• Programmable output frequency.
*(PCICLK7/HTTCLK0)ModeA 6
*PCICLK8/HTTCLK1/ModeB 7
PCICLK9/HTTCLK2 8
VDDPCI 9
GND 10
PCICLK10/HTTCLK3 11
PCICLK11 12
43 VDDA
42 GND
41 CPUCLK8T0
40 CPUCLK8C0
39 GND
38 VDDCPU
37 CPUCLK8T1
• Programmable output divider ratios.
PCICLK0 13
36 CPUCLK8C1
• Programmable output rise/fall time.
• Programmable output skew.
• Programmable spread percentage for EMI
control.
• Watchdog timer technology to reset system
if system malfunctions.
PCICLK1 14
GND 15
VDDPCI 16
****PCICLK2 17
****PCICLK3 18
VDDPCI 19
GND 20
35 VDDCPU
34 GND
33 GND
32 VDD
31 48MHz/FS3**
30 GND
29 AVDD48
• Programmable watch dog safe frequency.
• Support I2C Index read/write and block read/
write operations.
PCICLK4 21
PCICLK5 22
~*PCICLK_F/ModeC 23
28 24_48MHz/Sel24_48#*~
27 GND
26 SDATA
• Uses external 14.318MHz crystal.
• Supports Hyper Transport Technology (HTTCLK).
~*(PCICLK6)PCI_STOP# 24
25 SCLK
48-Pin TSSOP/SSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
~ This Output has 2X Drive Strength
**** This Output has 2.3X Drive Strength
Block Diagram
Functionality
PLL2
X1 XTAL
X2 OSC
/2
PLL1
Spread
Spectrum
CPU
DIVDER
Stop
SDATA
SCLK
FS (3:0)
MODE (A,B,C)
PCI_STOP#
24_48SEL#
Control
Logic
Config.
Reg.
PCI
DIVDER
Stop
X2
48MHz
24_48MHz
REF (2:0)
CPUCLKC (1:0)
CPUCLKT (1:0)
PCICLK (6:0, 11)
PCICLK_F
PCICLK/HTTCLK (3:0)
FS3 FS2 FS1 FS0
CPU
MHz
HTT
MHz
0 0 0 0 100.90 67.27
0 0 0 1 133.90 66.95
0 0 1 0 168.00 67.20
0 0 1 1 202.00 67.33
0 1 0 0 100.20 66.80
0 1 0 1 133.50 66.75
0 1 1 0 166.70 66.68
0 1 1 1 200.40 66.80
1 0 0 0 150.00 60.00
1 0 0 1 180.00 60.00
1 0 1 0 210.00 70.00
1 0 1 1 240.00 60.00
1 1 0 0 270.00 67.50
1 1 0 1 233.33 66.67
1 1 1 0 266.67 66.67
1 1 1 1 300.00 75.00
PCI
MHz
33.63
33.48
33.60
33.67
33.40
33.38
33.34
33.40
30.00
30.00
35.00
30.00
33.75
33.33
33.33
37.50
0700B—04/30/04
Downloaded from Elcodis.com electronic components distributor
1 page  
Table1: Frequency Selection Table
Bit5 Bit4 Bit3 Bit2 Bit1 CPU
FS3 FS2 FS1 FS0 MHz
0 0 0 0 0 100.90
0 0 0 0 1 133.90
0 0 0 1 0 168.00
0 0 0 1 1 202.00
0 0 1 0 0 100.20
0 0 1 0 1 133.50
0 0 1 1 0 166.70
0 0 1 1 1 200.40
0 1 0 0 0 150.00
0 1 0 0 1 180.00
0 1 0 1 0 210.00
0 1 0 1 1 240.00
0 1 1 0 0 270.00
0 1 1 0 1 233.33
0 1 1 1 0 266.67
0 1 1 1 1 300.00
1 0 0 0 0 100.00
1 0 0 0 1 133.33
1 0 0 1 0 166.66
1 0 0 1 1 200.00
1 0 1 0 0 103.00
1 0 1 0 1 137.33
1 0 1 1 0 171.66
1 0 1 1 1 206.00
1 1 0 0 0 154.50
1 1 0 0 1 185.40
1 1 0 1 0 216.30
1 1 0 1 1 247.20
1 1 1 0 0 278.10
1 1 1 0 1 240.33
1 1 1 1 0 274.67
1 1 1 1 1 309.00
HTT
MHz
67.27
66.95
67.20
67.33
66.80
66.75
66.68
66.80
60.00
60.00
70.00
60.00
67.50
66.67
66.67
75.00
66.67
66.67
66.66
66.67
68.67
68.66
68.66
68.67
61.80
61.80
72.10
61.80
69.53
68.67
68.67
77.25
PCI
MHz
33.63
33.48
33.60
33.67
33.40
33.38
33.34
33.40
30.00
30.00
35.00
30.00
33.75
33.33
33.33
37.50
33.33
33.33
33.33
33.33
34.33
34.33
34.33
34.33
30.90
30.90
36.05
30.90
34.76
34.33
34.33
38.63
VCO
MHz
403.60
535.60
672.00
404.00
400.80
534.00
666.80
400.80
600.00
360.00
420.00
480.00
540.00
466.66
533.34
600.00
400.00
533.32
666.64
400.00
412.00
549.32
686.64
412.00
618.00
370.80
432.60
494.40
556.20
480.66
549.34
618.00
ICS950402
0700B—04/30/04
Downloaded from Elcodis.com electronic components distributor
5
5 Page 
ICS950402
I2C Table: Group Skew Control Register
Byte 19
Pin #
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
-
-
-
-
-
-
-
PCISkw3
PCISkw2
PCISkw1
PCISkw0
PCI/HTTSkw3
PCI/HTTSkw2
PCI/HTTSkw1
PCI/HTTSkw0
Control
Function
CPU-PCI(6:0) Skew
Control
CPU-PCI(10:7) /
HTT(2:0) Skew Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
01
See Table 3: 7-Steps Skew
Programming Table
See Table 3: 7-Steps Skew
Programming Table
PWD
0
0
0
0
0
0
0
0
Table 3: 7-Steps Skew Programming Table
7 Step
11
10
01
11
900 ps
750 ps
600 ps
10 N/A N/A N/A
01 N/A N/A N/A
00 N/A N/A N/A
MSB
00
450 ps
300 ps
150 ps
0.0 ps
LSB
I2C Table: Group Skew Control Register
Byte 20
Pin #
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
-
-
-
-
-
-
-
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
I2C Table: Slew Rate Control Register
Byte 21
Pin #
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
-
-
-
-
-
Reserved
Reserved
Reserved
Reserved
Reserved
Bit 2
-
GSR_EN
Bit 1
-
ASEL
Bit 0
-
AEN
Control
Function
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
RW
Control
Function
Reserved
Reserved
Reserved
Reserved
Reserved
Gearshift Reset Enable
Async Frequency Select
Async Frequency Enable
Type
RW
RW
RW
RW
RW
RW
RW
RW
0 1 PWD
- -1
- -1
- -1
- -1
- -1
- -1
- -1
- -1
0
-
-
-
-
-
Disable
1
-
-
-
-
-
Enable
See Table 4 for Async Freq
PWD
0
0
0
0
0
0
0
1
0700B—04/30/04
Downloaded from Elcodis.com electronic components distributor
11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet ICS950402.PDF ] | |
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