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參數(shù)資料
| 型號： | CY28329ZXC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | 133-MHz Spread Spectrum Clock Synthesizer/Driver with Differential CPU Outputs |
| 中文描述： | 133 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56 |
| 封裝： | 6 X 12 MM, LEAD FREE, MO-153, TSSOP2-56 |
| 文件頁數(shù)： | 3/17頁 |
| 文件大?。?/td> | 290K |
| 代理商： | CY28329ZXC |
CY28329
Document #: 38-07040 Rev. *E
Page 3 of 17
Function Table
[1]
S2
S1
0
1
0
1
0
1
CPU
(MHz)
100 MHz
133 MHz
100 MHz
133 MHz
Hi-Z
TCLK/2
3V66[0:1](
MHz)
66 MHz
66 MHz
66 MHz
66 MHz
Hi-Z
TCLK/4
66BUFF[0:2]/
3V66[2:4]
(MHz)
66IN
66IN
66 MHz
66 MHz
Hi-Z
TCLK/4
66IN/3V66_5
(MHz)
66-MHz Input
66-MHz Input
66-MHz Input
66-MHz Input
Hi-Z
TCLK/4
PCI_F/PCI
(MHz)
66IN/2
66IN/2
33 MHz
33 MHz
Hi-Z
TCLK/8
REF0(MHz)
14.318 MHz
14.318 MHz
14.318 MHz
14.318 MHz
Hi-Z
TCLK
USB/DOT
(MHz)
48 MHz
48 MHz
48 MHz
48 MHz
Hi-Z
TCLK/2
Notes
2, 3, 4
2, 3, 4
2, 3, 4
2, 3, 4
5, 6
1, 6
1
1
0
0
Mid
Mid
Swing Select Functions
Mult0
0
Board Target
Trace/Term Z
50 ohm
Reference R, IREF =
V
DD
/(3*Rr)
Rr = 221 1%,
IREF = 5.00 mA
Rr = 475 1%,
IREF = 2.32 mA
Output
Current
I
OH
= 4*Iref
V
OH
@ Z,
1.0V @ 50
1
50 ohm
I
OH
= 6*Iref
0.7V @ 50
Clock Driver Impedances
Buffer Name
CPU, CPU#
REF
PCI, 3V66, 66BUFF
USB
DOT
V
DD
Range
Buffer Type
Type X1
Type 3
Type 5
Type 3A
Type 3B
Impedance
Typ.
(Ohm)
50
40
30
30
30
Min.
(Ohm)
Max.
(Ohm)
3.135–3.465
3.135–3.465
3.135–3.465
3.135–3.465
20
12
12
12
60
55
55
55
Clock Enable Configuration
PD#
0
1
1
PCI_STOP#
X
0
1
CPU
IREF*2
ON
ON
CPU#
FLOAT
ON
ON
3V66
LOW
ON
ON
66BUFF
LOW
ON
ON
PCI_F
LOW
ON
ON
PCI
LOW
OFF
ON
USB/DOT
LOW
ON
ON
VCOS/OSC
OFF
ON
ON
Notes:
1. TCLK is a test clock driven in on the XTALIN input in test mode.
2. “Normal” mode of operation.
3. Range of reference frequency allowed is min. = 14.316 nominal = 14.31818 MHz, max. = 14.32 MHz.
4. Frequency accuracy of 48 MHz must be +167 PPM to match USB default.
5. Required for board level “bed of nails” testing.
6. Mid is defined a Voltage level between 1.0V and 1.8V for 3 level input functionality. Low is below 0.8V. High is above 2.0V.
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