EP3C16F256I7 Altera, EP3C16F256I7 Datasheet - Page 138

• Manufacturer Part Number: EP3C16F256I7
• Description: Cyclone III
• Manufacturer: Altera

Clock Networks and PLLs in Cyclone III Devices
Figure 6–22. PLL Reconfiguration Scan Chain
6–38
Cyclone III Device Handbook, Volume 1
scandata
scanclk
configupdate
scanclkena
scandone
scandataout
scanclkena
Table 6–8. Real-Time PLL Reconfiguration Ports
PLL Port Name
configupdate
scandataout
scandone
scandata
inclk
scanclk
Serial input data stream to scan chain.
Serial clock input signal. This clock can be free running. Logic array
Updates data in the scan chain to the PLL. Active high.
Enables
loaded in the scan chain. Active high.
A high pulse indicates the PLL has finished
reconfiguration.
Shifts out contents of the scan chain.
from N counter
from M counter
/C4
scanclk
1
Table 6–8
I/O pins drive these signals.
/C3
and allows the
The counter settings are updated synchronously to the clock
frequency of the individual counters. Therefore, not all counters
update simultaneously.
shows how the programmable logic device (PLD) logic array or
Description
PFD
scandata
/C2
LF/K/CP
/C1
to be
/C0
Logic array
or I/O pins
or I/O pins
Logic array
or I/O pins
Logic array
or I/O pins
PLL
reconfig.
circuit
PLL
reconfig.
circuit
Altera Corporation- Preliminary
Source
VCO
/M
PLL reconfiguration
circuit
PLL reconfiguration
circuit
PLL reconfiguration
circuit
PLL reconfiguration
circuit
Logic array or I/O
pins
Logic array or I/O
pins
Destination
F
VCO
/N
March 2007