10gbase-kr link training parameters, 10gbase-kr link training parameters -5 – Altera Transceiver PHY IP Core User Manual
Page 61
Related Information
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10GBASE-KR Link Training Parameters
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10GBASE-KR Auto-Negotiation and Link Training Parameters
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on page 4-7
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on page 4-9
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10GBASE-KR Link Training Parameters
The 10GBASE-KR variant provides parameters to customize the Link Training parameters.
Table 4-4: Link Training Settings
Name
Value
Description
Enable Link Training
On/Off
When you turn this option On, the core includes the
link training module which configures the remote
link-partner TX PMD for the lowest Bit Error Rate
(BER). LT is defined in Clause 72 of IEEE Std
802.3ap-2007.
Enable daisy chain mode
On/Off
When you turn this option On, the core includes
support for non-standard link configurations where
the TX and RX interfaces connect to different link
partners. This mode overrides the TX adaptation
algorithm.
Enable microprocessor
interface
On/Off
When you turn this option On, the core includes a
microprocessor interface which enables the
microprocessor mode for link training.
Maximum bit error count
15, 31,63, 127,
255
Specifies the maximum number of errors before the
Link Training Error bit (0xD2, bit 4) is set indicating
an unacceptable bit error rate. You can use this
parameter to tune PMA settings. For example, if you
see no difference in error rates between two different
sets of PMA settings, you can increase the width of
the bit error counter to determine if a larger counter
enables you to distinguish between PMA settings.
Number of frames to send
before sending actual data
127, 255
Specifies the number of additional training frames
the local link partner delivers to ensure that the link
partner can correctly detect the local receiver state.
PMA Parameters
VMAXRULE
0-63
Specifies the maximum V
OD
. The default value is 60
which represents 1200 mV.
UG-01080
2015.01.19
10GBASE-KR Link Training Parameters
4-5
Backplane Ethernet 10GBASE-KR PHY IP Core with Early Access FEC Option
Altera Corporation