參數(shù)資料
型號(hào): 24707_PUB
英文描述: Programmable Resolution 1-Wire Digital Thermometer
中文描述: 時(shí)鐘發(fā)生器規(guī)格的AMD Athlon? 64和AMD Opteron?處理器
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代理商: 24707_PUB
24707 Rev. 3.08 September 2003
Clock Generator Specification for AMD64 Processors
7.3.5
REF[2:0] Clock Outputs
The Reference clock output electrical characteristics are described in Table 10.
Table 10. Reference Clock Output Electrical Characteristics
(Lump Capacitance Test Load = 20 pF)
Parameter
Description
Test Conditions
Min
Typ
Max
Unit
V
OL
Output Low
Voltage
Output High
Voltage
Output Low
Current
Output High
Current
Frequency, Actual
I
OL
= 9mA
0.4
V
V
OH
I
OH
= -12mA
2.4
V
I
OL
V
O
= 0.8V
16
mA
D
I
OH
V
O
= 2.0V
–22
mA
f
Frequency generated by crystal
oscillator
Measured from 20% to 80%
14.318
MHz
t
R
Output Rise Edge
Rate
Output Fall Edge
Rate
Duty Cycle
0.5
2
V/ns
t
F
Measured from 80% to 20%
0.5
2
V/ns
t
D
Measured on rising and falling edge
at 1.5V
Measured on rising edge at 1.5V.
Maximum difference of cycle time
between two adjacent cycles.
Measured using the JIT2 software
package with a Tek 7404 scope.
TIE (Time Interval Error)
measurement technique:
Sample resolution = 50 ps,
Sample Duration = 10 μs
Measured from full supply voltage.
45
55
%
t
JC
Jitter, Cycle-to-
Cycle
0
500
1000
ps
t
JA
Jitter,
Accumulated
–1000
1000
ps
t
FS
Frequency
Stabilization from
Power-up (cold
start)
Output Impedance
0
3
ms
A
R
ON
Average value during switching
transition. Used for determining
series termination value.
20
24
60
Chapter 7
Electrical Specifications
29
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