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參數資料
| 型號： | ICS950223YFLFT |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產生/分配 |
| 英文描述： | 200.4 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | 0.300 INCH, LEAD FREE, MO-118, SSOP-48 |
| 文件頁數： | 1/24頁 |
| 文件大小： | 209K |
| 代理商： | ICS950223YFLFT |
Integrated
Circuit
Systems, Inc.
ICS950223
0496C—05/06/05
Block Diagram
Pin Configuration
Recommended Application:
Brookdale and Brookdale-G chipset with P4 processor.
Output Features:
3 - Pairs of differential CPU clocks
(differential current mode)
3 - 3V66 @ 3.3V
10 - PCI @ 3.3V
1 - 48MHz @ 3.3V fixed
2 - REF @ 3.3V, 14.318MHz
1 - 48_66MHz selectable @ 3.3V fixed
1 - 24_48MHz selectable @ 3.3V
Features/Benefits:
QuadRomTM frequency selection.
Programmable output frequency.
Programmable asynchronous 3V66 & PCI 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 watchdog safe frequency.
Support I
2C Index read/write and block read/write
operations.
Uses external 14.318MHz reference input.
Key Specifications:
CPU Output Jitter <150ps
3V66 Output Jitter <250ps
CPU Output Skew <100ps
Programmable Timing Control Hub for P4
Frequency Table
PLL2
PLL1
Spread
Spectrum
48MHz
PCICLK (9:0)
3V66 (2:0)
24_48MHz
X1
X2
XTAL
OSC
CPU
DIVDER
PCI
DIVDER
3V66
DIVDER
PD#
MULTSEL(1:0)
SDATA
SCLK
Vtt_PWRGD#
SEL 48_24#
SEL 66_48#
FS (4:0)
I REF
RESET#
Control
Logic
Config.
Reg.
REF (1:0)
3
10
4
3
CPUCLKT (2:0)
CPUCLKC (2:0)
/ 2
3V66
DIVDER
3V66_48MHz
*MULTSEL1/REF1 1
48 REF0/MULTSEL0**
VDDREF 2
47 GNDREF
X1 3
46 VDDCPU
X2 4
45 CPUCLKT2
GND 5
44 CPUCLKC2
*FS2/PCICLK0 6
43 GNDCPU
*FS3/PCICLK1 7
42 PD#*
**SEL48_24#/PCICLK2 8
41 CPUCLKT0
VDDPCI 9
40 CPUCLKC0
*FS4/PCICLK3 10
39 VDDCPU
PCICLK4 11
38 CPUCLKT1
PCICLK5 12
37 CPUCLKC1
GND 13
36 GNDCPU
PCICLK6 14
35 IREF
PCICLK7 15
34 AVDD
PCICLK8 16
33 GND
PCICLK9 17
32 VDD3V66
VDDPCI 18
31 3V66_0
Vttpwr_GD# 19
30 3V66_1
RESET# 20
29 GND
GND 21
28 3V66_2
~*FS0/48MHz 22
27 3V66_3_48MHz/Sel66_48#**
*FS1/24_48MHz 23
26 SCLK
AVDD4824
25SDATA
48-SSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
ICS950223
~ This output has 2X drive strength
Bit4
Bit3
Bit2
Bit1
Bit0
CPU
3V66
PCI
FS4FS3
FS2FS1
FS0
MHz
0
0000
102.00
68.00
34.00
0
0001
105.00
70.00
35.00
0
0010
108.00
72.00
36.00
0
0011
111.00
74.00
37.00
0
0100
114.00
76.00
38.00
0
0101
117.00
78.00
39.00
0
0110
120.00
80.00
40.00
0
0111
123.00
82.00
41.00
0
1000
126.00
72.00
36.00
0
1001
130.00
74.29
37.14
0
1010
136.00
68.00
34.00
0
1011
140.00
70.00
35.00
0
1100
144.00
72.00
36.00
0
1101
148.00
74.00
37.00
0
1110
152.00
76.00
38.00
0
1111
156.00
78.00
39.00
1
0000
160.00
80.00
40.00
1
0001
164.00
82.00
41.00
1
0010
166.60
66.64
33.32
1
0011
170.00
68.00
34.00
1
0100
175.00
70.00
35.00
1
0101
180.00
72.00
36.00
1
0110
185.00
74.00
37.00
1
0111
190.00
76.00
38.00
1
1000
66.80
33.40
1
1001
100.20
66.80
33.40
1
1010
133.60
66.80
33.40
1
1011
200.40
66.80
33.40
1
1100
66.67
33.34
1
1101
100.00
66.67
33.33
1
1110
200.00
66.67
33.33
1
1111
133.33
66.67
33.33
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