Renesas 89HPES24T3G2ZBAL, User Manual

Page: 153 / 165

IDT Configuration Registers
PES24T3G2 User Manual 8 - 71 February 22, 2012
Notes
PHYPRBS - Phy PRBS Seed (0x55C)
Autonomous Link Reliability Management
ALRCTL - Autonomous Link Reliability Control (0x560)
Bit
Field
Field
Name
Type
Default
Value
Description
15:0 SEED RW 0xFFFF
Sticky
Phy PRBS Seed Value. This field contains the PHY PRBS
seed value used for crosslink operation.
When the value in this register is modified, the PRBS counter
associated with this seed is reset to the seed value and re-starts
counting.
31:16 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type
Default
Value
Description
0 EN RW 0x0
Sticky
Enable. When set, the Autonomous Link Reliability mechanism
described in section Autonomous Link Reliability Management
on page 3-6 is enabled.
0x0 - Autonomous Link Reliability Management Disabled
0x1 - Autonomous Link Reliability Management Enabled
1 LET RW 0x0
Sticky
Link Error Type. This field can be programmed to select the
type of error monitored by the Autonomous Link Reliability Man-
agement logic.
0x0 - Individual Bit Errors (i.e., LCRC Errors)
0x1 - Link State Errors (i.e., LTSSM transitioning from the L0 to
the Recovery state due to the following link errors: clock com-
pensation FIFO underflow/overflow, electrical idle detected/
inferred on the receiver, lane de-skew aligner errors, and DL
layer errors that trigger link retraining).
Note that it is only possible to count link errors that cause the
port to initiate a link transition to Recovery. Link errors that
cause the link partner to initiate entry into the Recovery state
are not counted.
31:2 Reserved RO 0x0 Reserved field.