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參數(shù)資料
| 型號(hào)： | CY2272 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Pentium 6x86, K6 Clock Synthesizer/Driver for Mobile PCs with Intel 82430TX or Ali IV/V+ and 3 SO-DIMMs(帶英特爾82430TX或 Ali IV/V+ 和3個(gè) SO-DIMM的應(yīng)用于移動(dòng)PC機(jī)的奔騰6x86, K6 時(shí)鐘合成器/驅(qū)動(dòng)器) |
| 中文描述： | 奔騰6x86，K6時(shí)鐘合成器/與英特爾82430TX或阿里四便攜式電腦驅(qū)動(dòng)器/ V和3 SO - DIMM內(nèi)存（帶英特爾82430TX或阿里四音頻/視頻和3個(gè)SO - DIMM插槽的應(yīng)用于移動(dòng)電腦機(jī)的奔騰6x86，K6時(shí)鐘合成器/驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大小： | 206K |
| 代理商： | CY2272 |
CY2272
3
CPU and PCI Clock Driver Strengths
Matched impedances on both rising and falling edges on
the output drivers
Output impedance: 25
(typical) measured at 1.5V.
Serial Configuration Map
The Serial bits will be read by the clock driver in the following
order:
Byte 0 - Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte 1 - Bits 7, 6, 5, 4, 3, 2, 1, 0
.
.
Byte N - Bits 7, 6, 5, 4, 3, 2, 1, 0
Reserved and unused bits should be programmed to “0”.
I
2
C Address for the CY2273 is:
Actual Clock Frequency Values
Clock Output
Target
Frequency
(MHz)
Actual
Frequency
(MHz)
PPM
CPUCLK
66.67
66.654
–195
CPUCLK
60.0
60.0
0
CPUCLK
75.0
75.0
0
USBCLK
48.0
48.008
167
IOCLK
24.0
24.004
167
Power Management Logic
CPU_STOP
PCI_STOP
PWR_DWN
CPUCLK
PCICLK
EPCICLK
PCICLK_F
Other
Clocks
Osc.
PLLs
X
X
0
Low
Low
Stopped
Stopped
Off
Off
0
0
1
Low
Low
Running
Running
Running
Running
0
1
1
Low
CPU PLL / 2
Running
Running
Running
Running
1
0
1
As per Func. Tbl.
Low
Running
Running
Running
Running
1
1
1
As per Func. Tbl.
As per Func. Tbl.
Running
Running
Running
Running
A6
1
A5
1
A4
0
A3
1
A2
0
A1
0
A0
1
R/W
----
Byte 0: Functional and Frequency Select Clock
Register (1 = Enable, 0 = Disable)
Bit
Bit 7
Pin #
--
Description
(Reserved) drive to ‘0’
Bit 6
--
(Reserved) drive to ‘0’
Bit 5
--
(Reserved) drive to ‘0’
Bit 4
--
Frequency Select (Refer to Freq. Sel. Table)
Bit 3
--
(Reserved) drive to ‘0’
Bit 2
--
(Reserved) drive to ‘0’
Bit 1
Bit 0
--
Bit 1
1
1
0
0
Bit 0
1 - Three-State
0 - N/A
1 - Testmode
0 - Normal Operation
Select Functions based on Byte 0
Functional Description
Three-State
Test Mode
[4]
Outputs
CPU
PCI, PCI_F
Hi-Z
SDRAM
Hi-Z
Ref
USBCLK
Hi-Z
IOCLK
Hi-Z
TCLK/2
[3]
Hi-Z
Hi-Z
TCLK/4
TCLK/2
TCLK
TCLK/2
TCLK/4
Notes:
3.
4.
TCLK supplied on the XTALIN pin in Test Mode.
Valid only for SEL2=1, SEL1=0, SEL0=1.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY2275A | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX with 3 DIMMs(帶英特爾82440LX 和 3個(gè)DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
| CY2276A-12 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 4 DIMMs(帶英特爾82440LX 和4個(gè)DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
| CY2276A-13 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 4 DIMMs(帶英特爾82440LX 和4個(gè)DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
| CY2276A-21 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 3SO- DIMMs(帶英特爾82440LX 和3SO-DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
| CY2276A-31 | PentiumII Clock Synthesizer/Driver for Desktop PCs with Intel 82440LX and 3SO- DIMMs(帶英特爾82440LX 和3SO-DIMM的應(yīng)用于桌上型PC機(jī)的奔騰II時(shí)鐘合成器/驅(qū)動(dòng)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY2273A | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
| CY2273A-1 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
| CY2273A-2 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
| CY2273A-3 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
| CY2273A-4 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Pentium㈢/II, 6x86, K6 Clock Synthesizer/Driver for Desktop PCs with Intel 82430TX, 82440LX or ALI IV/IV+, AGP and 3 DIMMs |
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