cy2546 Cypress Semiconductor Corporation., cy2546 Datasheet - Page 6

• Manufacturer Part Number: cy2546
• Description: Quad Pll Programmable Clock Generator With Spread Spectrum
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 001-12563 Rev. *A
AC Electrical Specifications
Table 2. Configuration Example for Jitter
Note
27MHz
48 MHz
27MHz
48 MHz
F
F
F
DC
DC
E
E
T
T
T
1. Configuration dependent.
Cycle-to-Cycle Jitter
Long Term Jitter
Reference
Parameter
IN
IN
OUT
CCJ1
LTJ
10
R
F
(crystal)
(clock)
T
T
T
T
Crystal Frequency
Input Clock Frequency (XIN or EXCLKIN)
Output Clock Frequency
Output Duty Cycle All Clocks except Ref Out Duty Cycle is defined in
Ref Out Duty Cycle
CLK1-9 Rising Edge Rate
CLK1-9 Falling Edge Rate
Cycle-to-cycle Jitter
Long Term Jitter
(1000 cycle period jitter)
PLL Lock Time
CCJ1
CCJ1
LTJ
LTJ
Description
Description
Max Jitter (ps) on
Output 1(48MHz)
155
135
770
535
PRELIMINARY
Output 2 (27 MHz)
Max Jitter (ps) on
Cycle Definition," on page 8
of V
Ref In Min 45%, Max 55%
V
V
Configuration dependent. See
“Configuration Example for Jitter,” on
page 6
Configuration dependent. See
“Configuration Example for Jitter,” on
page 6
DD
DD
DD
= All, 20% to 80% V
= All, 20% to 80% V
255
225
580
575
Conditions
Output 3 (166 MHz)
Max Jitter (ps) on
Figure 2, "Duty
DD
DD
; t
170
100
630
520
1
/t
Table 2,
Table 2,
2
, 50%
Min.
0.8
0.8
45
40
3
8
8
–
–
–
Output 4 (74.25 MHz)
Max Jitter (ps) on
Typ. Max. Unit
50
–
–
–
–
–
–
–
1
1105
195
125
795
CY2546
CY2544
Page 6 of 11
166
166
48
55
60
–
–
–
–
3
MHz
MHz
MHz
V/ns
V/ns
ms
ps
ns
%
%
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