CY28317ZC-2T SPECTRALINEAR [SpectraLinear Inc], CY28317ZC-2T Datasheet - Page 17

• Manufacturer Part Number: CY28317ZC-2T
• Manufacturer: SPECTRALINEAR [SpectraLinear Inc]

Rev 1.0, November 25, 2006
PCI Clock Outputs, PCI (Lump Capacitance Test Load = 20 pF)
REF Clock Outputs (Lump Capacitance Test Load = 20 pF)
48-MHz Clock Output (Lump Capacitance Test Load = 20 pF)
t
t
t
t
t
t
t
t
t
f
Z
f
t
t
t
f
Z
f
f
m/n
t
t
t
f
Z
Parameter
Parameter
Parameter
P
H
L
R
F
D
JC
SK
O
ST
R
F
D
ST
D
R
F
D
ST
o
o
o
Period
High Time
Low Time
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
Jitter, Cycle-to-Cycle
Output Skew
CPU to PCI Clock Skew
Frequency Stabilization
from Power-up (cold
start)
AC Output Impedance
Frequency, Actual
Deviation from 48 MHz
PLL Ratio
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
Frequency Stabilization
from Power-up (cold start)
AC Output Impedance
Frequency, Actual
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
Frequency Stabilization from
Power-up (cold start)
AC Output Impedance
Description
Description
Description
Measured on the rising edge at 1.5V
Duration of clock cycle above 2.4V
Duration of clock cycle below 0.4V
Measured from 0.4V to 2.4V
Measured from 2.4V to 0.4V
Measured on the rising and falling edges at 1.5V
Measured on the rising edge at 1.5V. Maximum
difference of cycle time between two adjacent cycles.
Measured on the rising edge at 1.5V
Covers all CPU/PCI outputs. Measured on the rising
edge at 1.5V. CPU leads PCI output.
Assumes full supply voltage reached within 1 ms
from power-up. Short cycles exist prior to frequency
stabilization.
Average value during switching transition. Used for
determining series termination value.
Determined by PLL divider ratio (see m/n below)
(48.008 – 48)/48
(14.31818 MHz x 57/17 = 48.008 MHz)
Measured on the rising and falling edges at 1.5V
Assumes full supply voltage reached within 1 ms
from power-up. Short cycles exist prior to
frequency stabilization.
Average value during switching transition. Used
for determining series termination value.
Measured from 0.4V to 2.4V
Measured from 2.4V to 0.4V
Frequency generated by crystal oscillator
Measured from 0.4V to 2.4V
Measured from 2.4V to 0.4V
Measured on the rising and falling edges at 1.5V
Assumes full supply voltage reached within
1 ms from power-up. Short cycles exist prior to
frequency stabilization.
Average value during switching transition. Used
for determining series termination value.
Test Condition/Comments
Test Condition/Comments
Test Condition/Comments
Min.
Min.
0.5
0.5
0.5
0.5
45
45
Min.
1.5
30
12
12
45
1
1
14.318
48.008
57/17
+167
Typ.
Typ.
Typ.
40
40
30
CY28317-2
Page 17 of 20
Max.
Max.
Max.
250
500
55
55
55
4
4
3
2
2
3
4
2
2
3
MHz
V/ns
V/ns
MHz
V/ns
V/ns
Unit
ppm
Unit
V/ns
V/ns
Unit
ms
ms
ms
%
ns
%
ns
ns
ps
ps
ns
%