ProASIC3L DC and Switching Characteristics
2-132
Revision 13
Clock Conditioning Circuits
CCC Electrical Specifications
Timing Characteristics
Table 2-212 ProASIC3L CCC/PLL Specification
CCC/PLL Operating at 1.2 V
Parameter
Min.
Typ.
Max.
Units
Clock Conditioning Circuitry Input Frequency fIN_CCC
1.5
250
MHz
Clock Conditioning Circuitry Output Frequency fOUT_CCC
0.75
250
MHz
Delay Increments in Programmable Delay Blocks 1, 2
2703
ps
Number of Programmable Values in Each Programmable Delay Block
32
Serial Clock (SCLK) for Dynamic PLL4
100
MHz
Input Cycle-to-Cycle Jitter (peak magnitude)
1
ns
CCC Output Peak-to-Peak Period Jitter FCCC_OUT
Max Peak-to-Peak Period Jitter
1 Global
Network
Used
External
FB Used
3 Global
Networks
Used
0.75 MHz to 24 MHz
0.50%
0.75%
0.70%
24 MHz to 100 MHz
1.00%
1.50%
1.20%
100 MHz to 250 MHz
2.50%
3.75%
2.75%
Acquisition Time
LockControl = 0
300
s
LockControl = 1
6.0
ms
Tracking Jitter5
LockControl = 0
2
ns
LockControl = 1
1
ns
Output Duty Cycle
48.5
51.5
%
Delay Range in Block: Programmable Delay 1 1, 2
1.2
15.65
ns
Delay Range in Block: Programmable Delay 2 1, 2
0.025
15.65
ns
Delay Range in Block: Fixed Delay 1, 2
3.1
ns
Notes:
2. TJ = 25°C, VCC = 1.2 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 –1 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 PLL input clock edge.
Tracking jitter does not measure the variation in PLL output period, which is covered by the period jitter parameter.