EP3C120F780I7 Altera, EP3C120F780I7 Datasheet - Page 14

• Manufacturer Part Number: EP3C120F780I7
• Description: IC CYCLONE III FPGA 120K 780FBGA
• Manufacturer: Altera
• Series: Cyclone® IIIr

Specifications of EP3C120F780I7

• Number Of Logic Elements/cells: 119088
• Number Of Labs/clbs: 7443
• Total Ram Bits: 3981312
• Number Of I /o: 531
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 780-FBGA
• Family Name: Cyclone III
• Number Of Logic Blocks/elements: 119088
• # I/os (max): 531
• Frequency (max): 437.5MHz
• Process Technology: 65nm
• Operating Supply Voltage (typ): 1.2V
• Logic Cells: 119088
• Ram Bits: 3981312
• Operating Supply Voltage (min): 1.15V
• Operating Supply Voltage (max): 1.25V
• Operating Temp Range: -40C to 100C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 780
• Package Type: FBGA
• For Use With: 544-2589 - KIT DEV EMB CYCLONE III EDITION544-2566 - KIT DEV DSP CYCLONE III EDITION544-2444 - KIT DEV CYCLONE III EP3C120
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Not Compliant

Page 14
Table 6. Compensation Modes
areset
locked
pfdena
Signal
f
1
Table 5. Compensation Modes
PLL Dynamic Reconfiguration and Phase Stepping
You can use this feature if you want to change the PLL settings without needing to
reconfigure the entire device. Two main applications for this feature change between
two output frequencies to suit the design and to adjust the clock-to-output (t
in real time without the need to regenerate a configuration file with new PLL settings.
You can enable the dynamic reconfiguration feature by instantiating the altpll
megafunction. Then, you can ease the usage of this feature by instantiating the
altpll_reconfig megafunction.
To obtain the maximum reconfiguration clock frequency (fscanclk) and typical time
required to reconfigure the scan chains (tconfigpll), refer to the
Datasheet: DC and Switching Characteristics
Handbook.
PLL Control Signals
There are three main control signals, which are essential during PLL usage,
depending on the application.
Source-synchronous
Mode
No Compensation
Mode
Normal Mode
Zero Delay Buffer
(ZDB) Mode
When enabled, this control pin is an input reset pin for each PLL. You must enable this control pin
if you enable the dynamic reconfiguration and clock switchover feature. You should also enable the
automatic reset upon loss of lock feature using the altpll megafunction so that the PLL resets
automatically when the locked signal goes low.
Refer to the
the Cyclone III Device Handbook to obtain the minimum pulse width on the
When enabled, this control pin is an output pin for each PLL. When it is high, the PLL has locked
onto the reference clock and the PLL clock outputs are operating at the desired phase and
frequency. You should create a design to monitor this signal to ensure that the system using the
PLL clock outputs reacts according to the validity of clock output.
When enabled, this control pin is an input pin for each PLL. You should enable this pin if your
system requires a certain clock frequency from the PLL even though the input clock is disabled, so
that it will have time to store its current setting before shutting down.
Modes
Cyclone III Device Datasheet: DC and Switching Characteristics
Choose this mode if you want to maintain the same phase relationship
between the clock and data from the input pins to the I/O element (IOE)
register driven by the PLL.
Choose this mode if you want a better jitter performance at the PLL
output.
Choose this mode if you want the clock edge at an IOE or Logic Element
(LE) register driven by the PLL to be phase-aligned with the clock signal at
the clock input pin.
Choose this mode if you want the external clock output pin to be
phase-aligned with the clock input pin for zero delay through the device.
Description
chapter in volume 2 of the Cyclone III Device
Description
© November 2008 Altera Corporation
areset
chapter in volume 2 of
Cyclone III Device
Early System Planning
signal (t
CO
) delays
ARESET
).