2. Stratix GX Transceivers
SGX51002-1.0
Stratix® GX devices incorporate dedicated embedded circuitry on the
right side of the device, which contains up to 20 high-speed 3.1875-Gbps
serial transceiver channels. Each Stratix GX transceiver block contains
four full-duplex channels and supporting logic to transmit and receive
high-speed serial data streams. The transceiver block uses the channels to
deliver bidirectional point-to-point data transmissions with up to
3.1875 Gbps of data transition per channel.
Transceiver
Blocks
There are up to 20 transceiver channels available on a single Stratix GX
device. Table 2–1 shows the number of transceiver channels available on
each Stratix GX device.
Table 2–1. Stratix GX Transceiver Channels
Device
Number of Transceiver Channels
EP1SGX10C
EP1SGX10D
EP1SGX25C
EP1SGX25D
EP1SGX25F
EP1SGX40D
EP1SGX40G
4
8
4
8
16
8
20
Figure 2–1 shows the elements of the transceiver block, including the four
channels, supporting logic, and I/O buffers. Each transceiver channel
consists of a receiver and transmitter. The supporting logic contains a
transmitter PLL to generate a high-speed clock used by the four
transmitters. The receiver PLL within each transceiver channel generates
the receiver reference clocks. The supporting logic also contains state
machines to manage rate matching for XAUI and GigE applications, in
addition to channel bonding for XAUI applications.
Altera Corporation
February 2005
2–1
ALTERA [ ALTERA CORPORATION ]
