IDT 89HPES12T3G2, Preliminary User'S Manual

Page: 137 / 146

IDT Configuration Registers
PES12T3G2 User Manual 8 - 61 January 28, 2013
Notes
PHYLSTATE0 - Phy Link State 0 (0x534)
Power Management Control and Status Registers
PMETOATIMER - PME_TO_Ack Timer (0X708)
8 LSE RW 0x0
Sticky
Low-Swing Mode Enable. When set, this bit enables Low-
Swing mode operation at the SerDes Transmit logic. Refer to
section Low-Swing Transmitter Voltage Mode on page 3-9 for
further details.
0x0 - Full-Swing Mode
0x1 - Low-Swing Mode
31:9 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type Default
Value
Description
30:0 Reserved RO 0x0 Reserved field.
31 FLRET RW 0x0 Full Link Retrain. Writing a one to this field initiates full link
retraining by directing the PHY LTSSM into the DETECT state.
This bit always returns zero when read.
For the upstream port, writing of a one to this bit always results
in the action specified by this bit to take effect after 1ms. The
PES12T3G2 always returns a completion to the requester
before the effect of this bit is applied.
Bit
Field
Field
Name
Type Default
Value
Description
7:0 PMETOATO RW 0x0A
Sticky
PME_TO_Ack Time-Out. This field contains the amount of
time a PES16T4G2 downstream port will wait for a
PME_TO_Ack message. If a PME_TO_Ack message is not
received within this time-out period, the downstream port will
stop waiting for a PME_TO_Ack message and proceed to put
the link into L2/L3 Ready.
The value in this field is in units of milliseconds.The default
value corresponds to a time-out of 10 ms.
A value of zero in this field corresponds to an immediate time-
out.
A value of 0xFF in this field corresponds to no time limit (i.e.,
wait forever).
31 Reserved RO 0x0 Reserved field.
Bit
Field
Field
Name
Type Default
Value
Description