參數(shù)資料
型號(hào)： C9837AT
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： 時(shí)鐘產(chǎn)生/分配
英文描述： PROC SPECIFIC CLOCK GENERATOR, PDSO48
封裝： TSSOP-48
文件頁(yè)數(shù)： 14/20頁(yè)
文件大?。?/td> 316K
代理商： C9837AT
+/+
…when timing is critical
C9837
Low EMI Clock Generator for Intel
Mobile 133MHz/2 SO-DIMM Chipset Systems
Preliminary
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.,
Rev 1.0
3/30/2000
MILPITAS, CA 95035, USA TEL: 408-263-6300, FAX 408-263-6571
Page 3 of 20
http://www.imicorp.com
Expanded Frequency Selection (MHz)
1,2
TEST
#
ESEL
1
ESEL
10
SEL
1
SEL
0
CPU
(0,1)
SDRAM
(0:3), DCLK
3V66
(0:2)
PCI_F,
PCI(1:6)
Notes
0
66.7
100*
66.6
33
0
1
100
100*
66.6
33
0
1
0
133.3
66.6
33
0
1
133.3
100*
66.6
33
0% extension
(Default)
0
1
0
70
105*
70
35
0
1
0
1
105
105*
70
35
0
1
0
140
70
35
0
1
140
105*
70
35
5% extension
1
0
73.3
110*
73.3
36.6
1
0
1
110
110*
73.3
36.6
1
0
1
0
146.7
73.3
36.6
1
0
1
146.7
110*
73.3
36.6
10% extension
1
0
80
120*
80
40
1
0
1
120
120*
80
40
1
0
160
80
40
1
160
120*
80
40
20% extension
Note 1: Extended frequencies are only available via I
2C interface. They are accessable via I2C Byte 5 bits 0,1.
Note 2: 48M_DOT clock is constant at 48MHz and REF is constant at 14.31818MHz for all table selections.
* Will be set to 133MHz and boosted accordingly, when Byte 3 Bit0 is set to logic 1.
Table 2
Power Management Functions
Power Management on this device is controlled by the PD#, CPU_STP# and PCI_STP# pins.
When PD# is high
(default) the device is in normal running mode and all signals are active.
The PD# signal is used to bring all clocks to a low level in an orderly fashion prior to power (all except AVDD) being
removed from the part. When PD# is asserted (forced) low, the device transitions to a shutdown (power down) mode
and all power supplies (3.3V and 2.5V except for AVDD) may then be removed. When PD# is sampled low by two
consecutive rising edges of CPU clock, then all affected clocks are stopped in a low state on their next high-to-low
transition. The REF and USB clocks are stopped in a low state as soon as possible. When in power down (and before
power is removed), all outputs are synchronously stopped in a low state (see Figure 1 below), all PLL’s are shut off, and
the crystal oscillator is disabled. When the device is shutdown, the IC function is also disabled.
At power up, using the PD# select pin, all clocks are started in such a manner as to guarantee a glitch free operation, no
partial clock pulses.
相關(guān)PDF資料
PDF描述
C9853AT PROC SPECIFIC CLOCK GENERATOR, PDSO48
C9914BY 150 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO28
C9PTSJ155.520EL CRYSTAL OSCILLATOR, CLOCK, 155.52 MHz, LVPECL OUTPUT
C9PASH156.250 CRYSTAL OSCILLATOR, CLOCK, 156.25 MHz, LVPECL OUTPUT
C9PAUH155.520 CRYSTAL OSCILLATOR, CLOCK, 155.52 MHz, LVPECL OUTPUT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
C-983-8 功能描述:烙鐵 PLUS SOLDERING TIP80 RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included
C-983-9 功能描述:烙鐵 PLUS SOLDERING TIP90 RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included
C983P 制造商:PERKINELMER 制造商全稱:PerkinElmer Optoelectronics 功能描述:CHANNEL PHOTO MULTIPLIER
C98451-D6100-A10-3 制造商:Siemens 功能描述:SIEMENS FINGERPRINT ID MOUSE
C9851 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Clock Generator for Pentium III Server and Workstation Applications
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*