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参数资料
| 型号： | CY2287-1 |
| 厂商： | Cypress Semiconductor Corp. |
| 英文描述： | 100-MHz Spread Spectrum Clock Synthesizer/Driver with USB, Hublink, and SDRAM Support |
| 中文描述： | 100 MHz的扩频时钟合成器/驱动器，带有USB接口，Hublink，和SDRAM支持 |
| 文件页数： | 3/13页 |
| 文件大小： | 148K |
| 代理商： | CY2287-1 |
CY2287
3
Function Table
SEL2
[2]
0
SEL1
0
SEL0
0
CPU
(MHz)
Hi-Z
TCLK
[3]
/2
SDRAM
(MHz)
Hi-Z
3V66
(MHz)
Hi-Z
PCI
(MHz)
Hi-Z
USB
(MHz)
Hi-Z
REF
(MHz)
Hi-Z
APIC
[4]
(MHz)
Hi-Z
APIC
[5]
(MHz)
Hi-Z
0
0
1
TCLK/2
TCLK/3
TCLK/8
TCLK/2
TCLK
TCLK/16
TCLK/8
0
1
0
66.67
100
66.67
33.33
48
14.318
16.67
33.33
0
1
1
100
100
66.67
33.33
48
14.318
16.67
33.33
1
0
0
66.67
100
66.67
33.33
48
14.318
16.67
33.33
1
0
1
100
100
66.67
33.33
48
14.318
16.67
33.33
1
1
0
66.67
100
66.67
33.33
48
14.318
16.67
33.33
1
1
1
100
100
66.67
33.33
48
14.318
16.67
33.33
Spread Spectrum
[2]
SEL2
[2]
SEL1
SEL0
Spread Spectrum Margin
X
0
0
0
N/A
X
0
0
1
N/A
0
X
X
X
N/A
1
0
1
0
–
0.6%
1
0
1
1
–
0.6%
1
1
0
0
–
0.25%
1
1
0
1
–
0.25%
1
1
1
0
–
0.4%
1
1
1
1
–
0.4%
Actual Clock Frequency Values
Clock Output
Target
Frequency (MHz)
66.67
Actual
Frequency (MHz)
66.288
PPM
–
5230
CPUCLK
CPUCLK
100.0
99.432
–
5680
USBCLK
48.0
48.008
+167
Notes:
2.
3.
4.
5.
Not a dedicated input pin. This selection must be addressed via I
2
C interface.
TCLK supplied on the XTALIN pin in Test Mode.
SEL33 = LOW (power-on latch input).
SEL33 = HIGH (power-on latch input).
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| CY2287PVC-1 | 制造商:CYPRESS 制造商全称:Cypress Semiconductor 功能描述:100-MHz Spread Spectrum Clock Synthesizer/Driver with USB, Hublink, and SDRAM Support |
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