Xgmii And Pcs Code Conversions - Altera Cyclone IV Device Handbook

1–70
Figure 1–64
Figure 1–64. Transceiver Configuration in XAUI Mode

XGMII and PCS Code Conversions

In XAUI mode, the 8B/10B encoder in the transmitter datapath maps various 8-bit
XGMII codes to 10-bit PCS code groups as listed in
Table 1–21. XGMII Character to PCS Code Groups Mapping (Part 1 of 2)
(1)
XGMII TXC XGMII TXD
0 00 through FF
1
1
1
1
1
1
Cyclone IV Device Handbook,
Volume 2
shows the transceiver configuration in XAUI mode.
Functional Mode
Channel Bonding
Low-Latency PCS
Word Aligner (Pattern Length)
8B/10B Encoder/Decoder
Deskew FIFO
Rate Match FIFO
Byte SERDES
Data Rate (Gbps)
Byte Ordering
FPGA Fabric-to-Transceiver
Interface Width
FPGA Fabric-to-Transceiver
Interface Frequency (MHz)
(2), (3)
07 K28.0, K28.3, or K28.5
07
9C
FB
FD
FE
Chapter 1: Cyclone IV Transceivers Architecture
Disabled
Automatic Synchronization
State Machine (7-bit, 10-Bit)
Enabled
Enabled
Enabled
Enabled
Disabled
Table
PCS Code Group
Dxx,y
K28.5
K28.4
K27.7
K29.7
K30.7
Transceiver Functional Modes
XAUI
×4
3.125
16-Bit
156.25
1–21.
Description
Normal data transmission
Idle in ||I||
Idle in ||T||
Sequence
Start
Terminate
Error
February 2015 Altera Corporation