EP4CE55F23C7 Altera, EP4CE55F23C7 Datasheet - Page 101

• Manufacturer Part Number: EP4CE55F23C7
• Description: IC CYCLONE IV FPGA 55K 484FBGA
• Manufacturer: Altera
• Series: CYCLONE® IV Er

Specifications of EP4CE55F23C7

• Number Of Logic Elements/cells: 55856
• Number Of Labs/clbs: 3491
• Total Ram Bits: 2340000
• Number Of I /o: 324
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

Chapter 5: Clock Networks and PLLs in Cyclone IV Devices
PLL Reconfiguration
Figure 5–25. Scan Chain Bit Order
© December 2010 Altera Corporation
DATAOUT
HB
LB
0
0
Figure 5–24
Figure 5–24. PLL Component Scan Chain Order
Figure 5–25
PLLs of Cyclone IV devices.
Charge Pump and Loop Filter
You can reconfigure the charge pump and loop filter settings to update the PLL
bandwidth in real time.
charge pump current (I
Cyclone IV devices.
Table 5–8. Charge Pump Bit Control
Table 5–9. Loop Filter Resistor Value Control (Part 1 of 2)
HB
LB
1
1
LFR[4]
DATAIN
0
0
0
0
1
1
1
HB
CP[2]
LB
2
2
0
1
1
1
shows the scan chain order of the PLL components.
shows the scan chain bit order sequence for one PLL post-scale counter in
HB
LB
3
3
LFR[3]
0
0
0
1
0
0
0
DATAOUT
MSB
HB
LB
CP
4
4
Table 5–8
), loop filter resistor (R) , and capacitor (C) values for PLLs of
LF
CP[1]
HB
LB
5
5
0
0
1
1
CP
LFR[2]
through
0
0
1
0
0
0
1
C4
HB
LSB
LB
6
6
Table 5–10
HB
LB
7
7
LFR[1]
C3
N
0
1
0
0
0
1
0
CP[0]
HB
LB
8
8
0
0
0
1
list the possible settings for
Cyclone IV Device Handbook, Volume 1
LB
HB
9
9
C2
M
LFR[0]
0
1
0
0
0
1
0
rselodd
rbypass
Setting (Decimal)
C0
C1
(Decimal)
0
1
3
7
Setting
DATAIN
16
19
20
0
3
4
8
5–39