Lattice Semiconductor
119
Data Sheet
November 2006
ORCA Series 3C and 3T FPGAs
Timing Characteristics (continued)
Table 50. Programmable Clock Manager (PCM) Timing Characteristics
OR3Cxx Commercial: VDD = 5.0 V ± 5%, 0 °C
≤TA < 70 °C; Industrial: VDD = 5.0 V ± 10%, –40 °C < TA < +85 °C.
OR3Txxx Commercial: VDD = 3.0 V to 3.6 V, 0 °C
< TA < 70 °C; Industrial: VDD = 3.0 V to 3.6 V, –40 °C < TA < +85 °C.
* Input frequency tolerance is the allowed input clock frequency change in parts per million.
PLL mode, divider reg = 1111111 (input freq. = output freq.).
Parameter
Symbol
Speed
Unit
-4
-5
-6
-7
Min
Max
Min
Max
Min
Max
Min
Max
Input Clock Frequency:
FPCMI
OR3Cxx
5
133
5
133
—
MHz
OR3Txxx
—
5
133
5
133
5
133
MHz
Output Clock Frequency:
FPCMO
OR3Cxx
5
135
5
135
—
MHz
OR3Txxx
—
5
100
5
100
5
100
MHz
Input Clock Duty Cycle
PCMI_DUTY
30.00
70.00
30.00
70.00
30.00
70.00
30.00
70.00
%
Output Clock Duty Cycle
PCMO_DUTY
3.13
96.90
3.13
96.90
3.13
96.90
3.13
96.90
%
Input Frequency Tolerance*
FTOL
—
26400
—
26400
—
26400
—
26400 ppm
PCM Acquisition Time (CLK In to
LOCK)
PCM_ACQ
36
100
36
100
36
100
36
100
s
PCM Off Delay (cong. Done-L, WE to
PCM power off)
PCMOFF_DEL
—
100.0
—
100.0
—
100.0
—
100.0
ns
PCM Delay in DLL Mode (propagation
delay)
PCMDLL-DEL
—
1.95
—
1.82
—
1.63
—
1.50
ns
PCM Delay in PLL Mode (propagation
delay)
PCMPLL_DEL
—
0.00
—
0.00
—
0.00
—
0.00
ns
PCM Clock In to PCM Clock Out
(CLK In to ECLK)
PCMBYE_DEL
—
0.47
—
0.36
—
0.26
—
0.24
ns
PCM Clock In to PCM Clock Out
(CLK In to SCLK)
PCMBYS_DEL
—
0.47
—
0.36
—
0.26
—
0.24
ns
Routed Clock-in Delay (routing to PCM
phase detect, using DIV0)
RTCKD_DEL
—
1.30
—
1.10
—
0.90
—
TBD
ns
System Clock-out Delay (PCM oscilla-
tor to SCLK output at PCM)
PCMSCK_DEL
—
2.70
—
2.20
—
1.90
—
TBD
ns
Parameter
Symbol
fOUT (MHz)
PLL Mode
DLL Mode
Unit
Output Jitter
OUTJIT
5—20
250
200
ps
21—30
210
170
ps
31—40
180
145
ps
41—50
155
123
ps
51—60
130
105
ps
61—70
110
90
ps
71—80
95
75
ps
81—90
80
65
ps
91—100
70
55
ps
Select
devices
have
been
discontinued.
See
Ordering
Information
section
for
product
status.