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參數(shù)資料
| 型號： | CY2276A-21 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 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時鐘合成器/驅(qū)動器) |
| 中文描述： | PentiumII時鐘合成器/桌面電腦與英特爾82440LX和3SO - DIMM內(nèi)存（帶英特爾82440LX和3SO - DIMM內(nèi)存的應(yīng)用于桌上型電腦機(jī)的奔騰二時鐘合成器/驅(qū)動器驅(qū)動程序） |
| 文件頁數(shù)： | 4/13頁 |
| 文件大小： | 205K |
| 代理商： | CY2276A-21 |
CY2276A-21
CY2276A-31
4
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 CY2276A-21,-31 is:
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.
Function Table
Device
-21
OE
SEL
N/A
XTALIN
14.318 MHz
CPUCLK
SDRAM
Hi-Z
PCICLK
Hi-Z
REF
IOAPIC
Hi-Z
USB
I/O
(-21 only)
Hi-Z
0
Hi-Z
-21
1
N/A
14.318 MHz
66.67 MHz
33.33 MHz
14.318 MHz
48 MHz
24 MHz
-31
0
X
14.318 MHz
Hi-Z
Hi-Z
Hi-Z
Hi-Z
N/A
-31
1
0
14.318 MHz
60 MHz
30 MHz
14.318 MHz
48 MHz
N/A
-31
1
1
14.318 MHz
66.67 MHz
33.33 MHz
14.318 MHz
48 MHz
N/A
Actual Clock Frequency Values
Clock Output
CPUCLK
Target
Frequency
(MHz)
66.67
Actual
Frequency
(MHz)
66.654
PPM
–195
CPUCLK
60.0
60.0
0
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
--
(Reserved) drive to ‘0’
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 - N/A
0 - N/A
1 - Testmode
0 - Normal Operation
Select Functions
Functional Description
Test Mode
Outputs
CPU
PCI, PCI_F
TCLK/4
SDRAM
TCLK/2
Ref
TCLK
IOAPIC
TCLK
TCLK/2
[2]
Note:
2.
TCLK supplied on the XTALIN pin in Test Mode.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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時鐘合成器/驅(qū)動器) |
| CY2278A | PentiumII Clock Synthesizer/Driver for Mobile PCs with Intel 82430TX and No SDRAM(帶英特爾82430TX和2個DIMM 或3個SO-DIMM 的應(yīng)用于移動PC機(jī)的奔騰II6x86, K6 時鐘合成器/驅(qū)動器) |
| CY22800-082A | Universal Programmable Clock Generator (UPCG) |
| CY22800 | Universal Programmable Clock Generator (UPCG) |
| CY22800_07 | Universal Programmable Clock Generator (UPCG) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY2276APVC-13 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| CY2276PVC-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| CY2276PVC-2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| CY2276PVC-3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| CY2276PVC-4 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
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