ep1sgx25d Altera Corporation, ep1sgx25d Datasheet - Page 19
ep1sgx25d
Manufacturer Part Number
ep1sgx25d
Description
Stratix Gx Device Family Data Sheet
Manufacturer
Altera Corporation
Datasheet
1.EP1SGX25D.pdf
(272 pages)
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Altera Corporation
June 2006
XAUI Mode
The transmit state machine translates the XAUI XGMII code group to the
XAUI PCS code group.
The XAUI PCS idle code groups, /K28.0/ (/R/) and /K28.5/ (/K/), are
automatically randomized based on a PRBS7 pattern with an x
polynomial. The /K28.3/ (/A/) code group is automatically generated
between 16 and 31 idle code groups. The idle randomization on the /A/,
/K/, and /R/ code groups are done automatically by the transmit state
machine.
Serializer (Parallel-to-Serial Converter)
The serializer converts the parallel 8-bit or 10-bit data into a serial stream,
transmitting the LSB first. The serialized stream is then fed to the transmit
buffer.
XGMII TXC
Table 2–3. Code Conversion
0
1
1
1
1
1
1
1
1
Figure 2–5
00 through FF
07
07
9C
FB
FD
FE
See IEEE 802.3
reserved code
groups
Other value
XGMII TXD
is a diagram of the serializer.
Table 2–3
Dxx.y
K28.0 or K28.3 or
K28.5
K28.5
K28.4
K27.7
K29.7
K30.7
See IEEE 802.3
reserved code groups
K30.7
PCS Code-Group
shows the code conversion.
Stratix GX Device Handbook, Volume 1
Stratix GX Transceivers
Normal data
Idle in ||I||
Idle in ||T||
Sequence
Start
Terminate
Error
Reserved code groups
Invalid XGMII character
Description
7
+x
6
+1
2–9
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