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參數(shù)資料
| 型號： | ICS9248YF-162LF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 137 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | 0.300 INCH, SSOP-48 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 472K |
| 代理商： | ICS9248YF-162LF |
Integrated
Circuit
Systems, Inc.
General Description
Features
ICS9248- 162
Block Diagram
Pentium is a trademark of Intel Corporation
I
2C is a trademark of Philips Corporation
Frequency Generator & Integrated Buffers for PENTIUM/ProTM & K6
9248-162 Rev A 8/31/00
Pin Configuration
Up to 137MHz frequency support
Spread Spectrum for EMI control
Serial I2C interface for Power Management,
Frequency Select, Spread Spectrum.
Provides the following system clocks
- 4-CPUs @ 2.5/3.3V, up to 137MHz.
(including CPUCLK_F)
- 9-SDRAMs @3.3V, up to 137MHz
(including SDRAM_F)
- 8-PCI @3.3V,CPU/2orCPU/3
(including 1 free running PCICLK_F)
- 1-24/48MHz@3.3V
-1-48MHz@3.3Vfixed
- 2-REF@3.3V,14.318MHz.
Efficient Power management scheme through PCI
andCLKSTOPCLOCKS
Spread Spectrum ± .25%, & 0 to -0.5% down spread
48-Pin SSOP and TSSOP
Power Groups
VDDLCPU,GNDLCPU=CPUCLK[2:0],CPUCLK_F
VDDSDR,GNDSDR=SDRAMCLKS[7:0],SDRAM_F
VDDPCI,GNDPCI=PCICLKS[6:0],PCICLK_F
VDD48,GND48=48MHz,24MHz
VDDREF,GNDREF=REF,X1,X2
VDDCOR=PLLCORE
* Internal Pull-up Resistor of 120K to VDD
The ICS9248-162 is the single chip clock solution for various
mobile chipset platforms. It provides all necessary clock signals
for such a system.
Spread spectrum may be enabled through I2C programming.
Spread spectrum typically reduces system EMI by 8dB to
10dB. This simplifies EMI qualification without resorting to
board design iterations or costly shielding. The ICS9248-162
employs a proprietary closed loop design, which tightly
controls the percentage of spreading over process and
temperature variations.
VDDREF
REF0
GNDREF
X1
X2
VDDPCI
*CPU2.5_3.3#/PCICLK_F
*FS3/PCICLK0
GNDPCI
*SEL24_48#/PCICLK1
PCICLK2
PCICLK3
PCICLK4
VDDPCI
BUFFER IN
GNDPCI
PCICLK5
PCICLK6
VDDCOR
PCI_STOP#
*PD#
GND48
SDATA
SCLK
REF1/FS2*
VDDLCPU
CPUCLK_F
CPUCLK0
GNDLCPU
CPUCLK1
CPUCLK2
CLK_STOP#
GNDSDR
SDRAM_F
SDRAM0
SDRAM1
VDDSDR
SDRAM2
SDRAM3
GNDSDR
SDRAM4
SDRAM5
VDDSDR
SDRAM6
SDRAM7
VDD48
48MHz/FS0*
24_48MHz/FS1*
ICS9248-162
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
CLK_STOP#
PCI_STOP#
CPU2.5_3.3#
PLL2
PLL1
Spread
Spectrum
48MHz
24_48MHz
CPUCLK_F
CPUCLK (2:0)
SDRAM (7:0)
PCICLK (6:0)
PCICLK_F
SDRAM_F
X1
X2
BUFFER IN
XTAL
OSC
PCI
CLOCK
DIVDER
STOP
SDATA
SCLK
PD#
FS(3:0)
SEL24_48#
Control
Logic
Config.
Reg.
/ 2
REF(1:0)
LATCH
POR
2
3
8
7
ICS reserves the right to make changes in the device data identified in
this publication without further notice. ICS advises its customers to
obtain the latest version of all device data to verify that any
information being relied upon by the customer is current and accurate.
相關PDF資料 |
PDF描述 |
|---|---|
| ICS9248YF-162LF-T | 137 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| ICS9248YF-169-T | 150 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| ICS9248YF-172-T | 133.33 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| ICS9248YF-172LF-T | 133.33 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| ICS9248YF-175LF-T | 133 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ICS9248YF-163-T | 制造商:ICS 制造商全稱:ICS 功能描述:AMD - K7⑩ System Clock Chip |
| ICS9248YF-168-T | 制造商:ICS 制造商全稱:ICS 功能描述:AMD - K7⑩ Clock Generator for Mobile System |
| ICS9248YF-171-T | 制造商:ICS 制造商全稱:ICS 功能描述:AMD - K7TM System Clock Chip |
| ICS9248YF-189-T | 制造商:ICS 制造商全稱:ICS 功能描述:AMD - K7⑩ Clock Generator for Mobile System |
| ICS9248YF-195LF-T | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator & Integrated Buffers for PENTIUM II/III & K6 |
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