- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379007 > CY28378 (Cypress Semiconductor Corp.) FTG for Pentium 4 and Intel 845 Series Chipset PDF資料下載
參數(shù)資料
| 型號： | CY28378 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | FTG for Pentium 4 and Intel 845 Series Chipset |
| 中文描述： | 為奔騰4和Intel 845系列芯片組FTG |
| 文件頁數(shù)： | 2/22頁 |
| 文件大小： | 174K |
| 代理商： | CY28378 |
CY28378
Document #: 38-07519 Rev. **
Page 2 of 22
Pin Description
Pin #
Name
Type
I
Description
3
X1
Crystal Connection or External Reference Frequency Input:
This
pin has dual functions. It can be used as an external 14.318-MHz
crystal connection or as an external reference frequency input.
Crystal Connection:
Connection for an external 14.318-MHz crystal.
If using an external reference, this pin must be left unconnected.
Reference Clock 0/Current Multiplier Selection 0:
3.3V 14.318-MHz
clock output. This pin also serves as a power-on strap option to
determine the current multiplier for the CPU clock outputs. The
MULTSEL1:0 definitions are as follows:
MULTSEL1:0
00 = Ioh is 4 x IREF
01 = Ioh is 5 x IREF
10 = Ioh is 6 x IREF
11 = Ioh is 7 x IREF
150k internal pull down.
Reference Clock 1/Current Multiplier Selection 1:
3.3V 14.318-MHz
clock output. This pin also serves as a power-on strap option to
determine the current multiplier for the CPU clock outputs. The
MULTSEL1:0 definitions are as follows:
MULTSEL1:0
00 = Ioh is 4 x IREF
01 = Ioh is 5 x IREF
10 = Ioh is 6 x IREF
11 = Ioh is 7 x IREF
150k internal pull up.
CPU Clock Outputs:
Frequency is set by the FS0:4 inputs or through
serial input interface.
CPU Clock Output for ITP:
Frequency is set by the FS0:4 inputs or
through serial input interface.
66MHz Clock Outputs:
3.3V fixed 66-MHz clock.
Free-running PCI Output 0/Frequency Select 2:
3.3V free-running
PCI output. This pin also serves as a power-on strap option to
determine device operating frequency as described in the Frequency
Selection Table. 150k internal pull up.
Free-running PCI Output 1/Frequency Select 3:
3.3V free-running
PCI output. This pin also serves as a power-on strap option to
determine device operating frequency as described in the
Table 2
.
150k internal pull up.
Free-running PCI Output 2:
3.3V free-running PCI output.
PCI Output 0/Frequency Select 4:
3.3V PCI output. This pin also
serves as a power-on strap option to determine device operating
frequency as described in
Table 2
. 150k internal pull up.
PCI Clock Output 1 to 6:
3.3V PCI clock outputs.
4
X2
O
48
REF0/MULTSEL0
I/O
1
REF1/MULTSEL1
I/O
41, 38, 40, 37
CPUT(0:1),
CPUC(0:1)
CPU_ITP,
CPU_ITP#
3V66_0:2
PCI_F0/FS2
O
44, 45
O
31, 30, 28
6
O
I/O
7
PCI_F1/FS3
I/O
8
10
PCI_F2
PCI0/FS4
O
I/O
11, 12, 14, 15, 16,
17
22
PCI(1:6)
O
48MHz_0/FS0
I/O
48MHz Output/Frequency Select 0:
3.3V fixed 48-MHz, non-spread
spectrum output. This pin also serves as a power-on strap option to
determine device operating frequency as described in
Table 2
.
This output will be used as the reference clock for USB host controller
in Intel 845 (Brookdale) platforms. For Intel
Brookdale – G platforms,
this output will be used as the VCH reference clock. 150k internal pull
up.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY28378OC | FTG for Pentium 4 and Intel 845 Series Chipset |
| CY28378OCT | FTG for Pentium 4 and Intel 845 Series Chipset |
| CY28400 | 100-MHz Differential Buffer for PCI Express and SATA |
| CY28400OC | 100-MHz Differential Buffer for PCI Express and SATA |
| CY28400OCT | 100-MHz Differential Buffer for PCI Express and SATA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY28378OC | 制造商:SPECTRALINEAR 制造商全稱:SPECTRALINEAR 功能描述:FTG for Pentium 4㈢ and Intel㈢ 845 Series Chipset |
| CY28378OCT | 制造商:SPECTRALINEAR 制造商全稱:SPECTRALINEAR 功能描述:FTG for Pentium 4㈢ and Intel㈢ 845 Series Chipset |
| CY28378OXC | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 Sys Clk Pentium 4 & Intel Brookdale 845 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY28378OXCT | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 Sys Clk Pentium 4 & Intel Brookdale 845 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56 |
| CY28381 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:High-Performance SiS645DX/648DX/650/651 Intel Pentium 4 Clock Synthesizer |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。