fs6377 AMI Semiconductor, Inc., fs6377 Datasheet - Page 18

• Manufacturer Part Number: fs6377
• Description: Fs6377-01g Programmable 3-pll Clock Generator Ic
• Manufacturer: AMI Semiconductor, Inc.

FS6377-01x Programmable 3-PLL Clock Generator IC
Table 13: AC Timing Specifications
Parameter
Overall
Output frequency*
VCO frequency*
VCO gain*
Loop filter time constant*
Rise time*
Fall time*
Tristate enable delay*
Tristate disable delay*
Clock stabilization time*
Divider Modulus
Feedback divider
Reference divider
Post divider
Clock Outputs (PLL A clock via CLK_A pin) Approximate
Duty cycle*
Jitter, long term (σy(τ))*
Jitter, period (peak-peak)*
Clock Outputs (PLL B clock via CLK_B pin) Approximate
Duty cycle*
Jitter, long term (σy(τ))*
Jitter, period (peak-peak)*
AMI Semiconductor
www.amis.com
Specifications subject to change without notice
– Oct., 2007 – Rev. 3.0
Symbol
f
f
A
t
t
t
t
t
N
N
N
t
t
t
t
O
VCO
r
r
PZL
PZL
STB
j(LT)
j(∆P)
j(LT)
j(∆P)
VCO
F
R
P
, t
, t
PZH
PZH
Conditions/Descriptions
V
V
V
V
LFTC bit = 0
LFTC bit = 1
V
V
V
V
Output active from power-up, via PD pin
After last register is written
See Table 2
See Table 8
Ratio of pulse width (as measured from rising edge
to next falling edge at 2.5V) to one clock period
On rising edges 500µs apart at 2.5V relative to an
ideal clock, C
N
On rising edges 500µs apart at 2.5V relative to an
ideal clock, C
N
C = 40MHz, D = 14.318MHz)
From rising edge to the next rising edge at 2.5V,
C
N
From rising edge to the next rising edge at 2.5V,
C
N
C = 40MHz, D = 14.318MHz)
Ratio of pulse width (as measured from rising edge
to next falling edge at 2.5V) to one clock period
On rising edges 500µs apart at 2.5V relative to an
ideal clock, C
N
On rising edges 500µs apart at 2.5V relative to an
ideal clock, C
N
C = 40MHz, D = 14.318MHz)
From rising edge to the next rising edge at 2.5V,
C
N
From rising edge to the next rising edge at 2.5V,
C
N
C = 40MHz, D = 14.318MHz)
DD
DD
DD
DD
O
O
O
O
R
R
L
PX
L
PX
R
R
L
PX
L
PX
= 15pF, f
= 15pF, f
= 15pF, f
= 15pF, f
= 0.5V to 4.5V; C
= 0.3V to 3.0V; C
= 4.5V to 0.5V; C
= 3.0V to 0.3V; C
= 63, N
= 63, N
= 63, N
= 63, N
= 5.5V
= 3.6V
= 5.5V
= 3.6V
= 50, no other PLLs active
= 50, all other PLLs active (B = 60MHz,
= 50, no other PLLs active
= 50, all other PLLs active (A = 50MHz,
PX
PX
PX
PX
XIN
XIN
XIN
XIN
= 50, no other PLLs active
= 50, no other PLLs active
= 50, all other PLLs active (B = 60MHz,
= 50, all other PLLs active (A = 50MHz,
L
L
L
L
= 14.318MHz, N
= 14.318MHz, N
= 14.318MHz, N
= 14.318MHz, N
= 15pF, f
= 15pF, f
= 15pF, f
= 15pF, f
L
L
L
L
= 15pF
= 15pF
= 15pF
= 15pF
XIN
XIN
XIN
XIN
18
= 14.318MHz, N
= 14.318MHz, N
= 14.318MHz, N
= 14.318MHz, N
F
F
F
F
= 220, N
= 220, N
= 220, N
= 220, N
R
R
R
R
= 63,
= 63,
= 63,
= 63,
F
F
F
F
= 220,
= 220,
= 220,
= 220,
Clock
(MHz)
100
100
100
100
100
100
50
50
60
60
Min.
0.8
0.8
40
40
45
45
1
1
8
1
1
Typ.
400
100
165
110
390
120
400
1.9
1.6
1.8
1.5
20
45
45
75
7
Max.
2047
150
100
230
170
255
50
55
55
8
8
1
Data Sheet
MHz/V
Units
MHz
MHz
ms
µs
ns
ns
ns
ns
µs
ps
ps
ps
ps
%
%