EP4CE55F23C8 Altera, EP4CE55F23C8 Datasheet - Page 123

• Manufacturer Part Number: EP4CE55F23C8
• Description: IC CYCLONE IV FPGA 55K 484FBGA
• Manufacturer: Altera
• Series: CYCLONE® IV Er

Specifications of EP4CE55F23C8

• 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 6: I/O Features in Cyclone IV Devices
Termination Scheme for I/O Standards
Differential I/O Standard Termination
Figure 6–7. Cyclone IV Devices Differential HSTL I/O Standard Class I and Class II Interface and Termination
Figure 6–8. Cyclone IV Devices Differential SSTL I/O Standard Class I and Class II Interface and Termination
Note to
(1) Only Differential SSTL-2 I/O standard supports Class II output.
© December 2010 Altera Corporation
Figure
Termination
Termination
On-Board
Termination
Termination
External
On-Board
External
OCT
6–8:
OCT
Cyclone IV Device
Family Series OCT
Cyclone IV Device
Family Series OCT
Differential I/O standards typically require a termination resistor between the two
signals at the receiver. The termination resistor must match the differential load
impedance of the bus (refer to
Cyclone IV devices support differential SSTL-2 and SSTL-18, differential HSTL-18,
HSTL-15, and HSTL-12, PPDS, LVDS, RSDS, mini-LVDS, and differential LVPECL.
Transmitter
Transmitter
Transmitter
Transmitter
50
50
Ω
Ω
Differential HSTL Class I
Differential SSTL Class I
25 Ω
25 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
V TT
V TT
V TT
V TT
50 Ω
50 Ω
50 Ω
50 Ω
V TT
V TT
V TT
V TT
Receiver
Receiver
Receiver
Receiver
Figure 6–7
Cyclone IV Device
Family Series OCT
Cyclone IV Device
Family Series OCT
Transmitter
Transmitter
Transmitter
Transmitter
25
25
Ω
Ω
and
Figure
50 Ω
50 Ω
V TT
V TT
25 Ω
25 Ω
Differential SSTL Class II
V TT V TT
50 Ω
50 Ω
V TT V TT
Differential HSTL Class II
V TT
V TT
50 Ω
50 Ω
50 Ω
6–8).
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50 Ω
50Ω
50 Ω
Cyclone IV Device Handbook, Volume 1
V TT V TT
V TT
V TT
V TT V TT
50 Ω
50 Ω
50 Ω
V TT
V TT
50 Ω
Receiver
Receiver
Receiver
Receiver
(Note 1)
6–15