ProASIC3E Flash Family FPGAs
Revision 13
2-69
Clock Conditioning Circuits
CCC Electrical Specifications
Timing Characteristics
Table 2-98 ProASIC3E CCC/PLL Specification
Parameter
Minimum
Typical
Maximum
Units
Clock Conditioning Circuitry Input Frequency fIN_CCC
1.5
350
MHz
OUT_CCC
0.75
350
MHz
Delay Increments in Programmable Delay Blocks 1, 2
1603
ps
Serial Clock (SCLK) for Dynamic PLL
125
MHz
Number of Programmable Values in Each
Programmable Delay Block
32
Input Period Jitter
1.5
ns
CCC Output Peak-to-Peak Period Jitter FCCC_OUT
Max Peak-to-Peak Period Jitter
1 Global
Network Used
3 Global
Networks Used
0.75 MHz to 24 MHz
0.50%
0.70%
24 MHz to 100 MHz
1.00%
1.20%
100 MHz to 250 MHz
1.75%
2.00%
250 MHz to 350 MHz
2.50%
5.60%
Acquisition Time
LockControl = 0
300
s
LockControl = 1
6.0
ms
Tracking Jitter 5
LockControl = 0
1.6
ns
LockControl = 1
0.8
ns
Output Duty Cycle
48.5
51.5
%
Delay Range in Block: Programmable Delay 1 1, 2
0.6
5.56
ns
Delay Range in Block: Programmable Delay 2 1,2
0.025
5.56
ns
Delay Range in Block: Fixed Delay1,4
2.2
ns
Notes:
2. TJ = 25°C, VCC = 1.5 V.
3. When the CCC/PLL core is generated by Microsemi core generator software, not all delay values of the specified delay
increments are available. Refer to the Libero SoC Online Help for more information.
4. Maximum value obtained for a –2 speed-grade device in worst-case commercial conditions. For specific junction
5. Tracking jitter is defined as the variation in clock edge position of PLL outputs with reference to the PLL input clock
edge. Tracking jitter does not measure the variation in PLL output period, which is covered by the period jitter
parameter.