HC4GX15 Datasheet, PDF (326/668 Pages) Altera Corporation – HardCopy IV Device Handbook

1–62
Figure 1–49. DC-Coupled Link
Transmitter
TX Termination
Chapter 1: HardCopy IV GX Transceiver Architecture
Receiver Channel Datapath
Physical Medium
Physical Medium
Receiver
RX Termination
TX
RX
V_CM
V_CM
Note to Figure 1–49:
(1) The receiver termination and biasing can be on-chip or off-chip.
You might choose to use the DC-coupled high-speed link for these functional modes
only:
■ Basic single- and double-width
■ (OIF) CEI PHY interface
The following sections describe DC-coupling requirements for a high-speed link with
a HardCopy IV GX device used as the transmitter, receiver, or both. Specifically, the
following link configurations are described:
■ HardCopy IV GX Transmitter (PCML) to HardCopy IV GX Receiver (PCML)
■ Stratix II GX Transmitter (PCML) to HardCopy IV GX Receiver (PCML)
■ HardCopy IV GX Transmitter (PCML) to Stratix II GX Receiver (PCML)
■ LVDS Transmitter to HardCopy IV GX Receiver (PCML)
HardCopy IV Device Handbook Volume 3
© June 2009 Altera Corporation