EP2AGX95EF29C4N Altera, EP2AGX95EF29C4N Datasheet - Page 128

• Manufacturer Part Number: EP2AGX95EF29C4N
• Description: IC ARRIA II GX FPGA 95K 780FBGA
• Manufacturer: Altera
• Series: Arria II GXr

Specifications of EP2AGX95EF29C4N

• Number Of Logic Elements/cells: 89178
• Number Of Labs/clbs: 3747
• Total Ram Bits: 6679
• Number Of I /o: 372
• Voltage - Supply: 0.87 V ~ 0.93 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 780-FBGA
• Family Name: Arria® II GX
• Number Of Logic Blocks/elements: 93674
• # I/os (max): 372
• Frequency (max): 500MHz
• Operating Supply Voltage (typ): 900mV
• Logic Cells: 93674
• Ram Bits: 7025459.2
• Operating Supply Voltage (min): 0.87V
• Operating Supply Voltage (max): 0.93V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 780
• Package Type: FC-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Compliant

5–36
Table 5–15. Dynamic Phase-Shifting Control Signals (Part 1 of 2)
Arria II GX Device Handbook, Volume 1
PHASECOUNTER
SELECT[3:0]
PHASEUPDOWN
PHASESTEP
Signal Name
f
1
Counter select. Four bits decoded to select
either the M or one of the C counters for phase
adjustment. One address maps to select all
C counters. This signal is registered in the PLL
on the rising edge of scanclk.
Selects dynamic phase shift direction;
1 = UP; 0 = DOWN. Signal is registered in the
PLL on the rising edge of scanclk.
Logic high enables dynamic phase shifting.
Bypassing PLL
Bypassing a PLL counter results in a multiply (m counter) or a divide (n and C0 to C6
counters) factor of one.
Table 5–14
Table 5–14. PLL Counter Settings
For more information about how to use the PLL scan chain bit settings, refer to the
Phase Locked-Loops Reconfiguration (ALTPLL_RECONFIG) Megafunction User
To bypass any of the PLL counters, set the bypass bit to 1, causing the values on the
other bits to be ignored. To bypass the VCO post-scale counter (K), set the
corresponding bit to 0.
Dynamic Phase-Shifting
The dynamic phase-shifting feature allows the output phases of individual PLL
outputs to be dynamically adjusted relative to each other and to the reference clock
without having to send serial data through the scan chain of the corresponding PLL.
This feature simplifies the interface and allows you to quickly adjust clock-to-out (t
delays by changing the output clock phase-shift in real time. This adjustment is
achieved by incrementing or decrementing the VCO phase-tap selection to a given
C counter or to the M counter. The phase is shifted by 1/8 of the VCO frequency at a
time. The output clocks are active during this phase-reconfiguration process.
Table 5–15
Notes to
(1) Counter-bypass bit.
LSB
X
0
Table
X
X
lists the settings for bypassing the counters in Arria II GX PLLs.
lists the control signals that are used for dynamic phase-shifting.
5–14:
Description
X
X
X
X
X
X
PLL Scan Chain Bits [0..8] Settings
X
X
X
X
Logic array or I/O pins
Logic array or I/O pin
Logic array or I/O pin
Chapter 5: Clock Networks and PLLs in Arria II GX Devices
X
X
MSB
1
0
Source
(1)
(1)
PLL counter bypassed
PLL counter not bypassed because
bit 8 (MSB) is set to 0
© July 2010 Altera Corporation
PLL reconfiguration circuit
PLL reconfiguration circuit
PLL reconfiguration circuit
Description
PLLs in Arria II GX Devices
Destination
Guide.
CO
)