EP4CE55F23I7 Altera, EP4CE55F23I7 Datasheet - Page 291

• Manufacturer Part Number: EP4CE55F23I7
• Description: IC CYCLONE IV FPGA 55K 484FBGA
• Manufacturer: Altera
• Series: CYCLONE® IV Er

Specifications of EP4CE55F23I7

• 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: -40°C ~ 100°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

Chapter 1: Cyclone IV Transceivers Architecture
Receiver Channel Datapath
© December 2010 Altera Corporation
Figure 1–12. AC-Coupled Link with OCT
In a DC-coupled link, the transmitter DC common mode voltage is seen unblocked at
the receiver input buffer as shown in
depends on the transmitter common mode voltage and the receiver common mode
voltage. When using the receiver OCT and on-chip biasing circuitry in a DC coupled
link, you must ensure the transmitter common mode voltage is compatible with the
receiver common mode requirements. If you disable the OCT, you must terminate and
bias the receiver externally and ensure compatibility between the transmitter and the
receiver common mode voltage.
Figure 1–13. DC-Coupled Link with OCT
Transmitter
Transmitter
TX Termination
TX Termination
TX
V
TX
V
CM
CM
Physical Medium
Physical Medium
Physical Medium
Physical Medium
Figure
1–13. The link common mode voltage
AC Coupling
AC Coupling
Capacitor
Capacitor
Cyclone IV Device Handbook, Volume 2
RX
V
RX
V
CM
CM
RX Termination
RX Termination
Receiver
Receiver
1–11