User guide

1–8 Altera Corporation
Stratix GX Transceiver User Guide January 2005
Modes of Operation
Figure 1–4. Block Diagram of a Duplex Channel Configured in XAUI Mode
GigE Mode
Stratix GX devices in GigE mode can use the 8B/10B encoder/decoder,
rate matcher, synchronizer, and byte serializer/deserializer built-in hard
macros. Refer to the GigE Mode chapter for more information about this
mode. The rate matcher and word aligner each have a dedicated state
machine governing their functions. These state machines are active only
in GigE mode. Figure 1–5 shows a block diagram of a duplex channel
configured in GigE mode.
Deserializer
Serializer
Word
Aligner
8B/10B
Decoder
Channel
Aligner
Byte
Deserializer
8B/10B
Encoder
Phase
Compensation
FIFO Buffer
Reference
Clock
Reference
Clock
Byte
Serializer
Phase
Compensation
FIFO Buffer
Rate
Matcher
Digital SectionAnalog Section
Receiver
PLL
Transmitter
PLL
Clock
Recovery
Unit
Receiver
Transmitter