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278 Software Developer’s Manual
Register Descriptions
LED Stretch Disable 5
Disable the SPEED_TEN_LED
Extension Logic.
0b = Enable logic.
1b = Disable logic.
Note: Only when both the stretch and
blink are disabled the input bypasses
the blink logic and is muxed out with no
sampling (only combinational logic).
R/W 1b 1b
LED Source Select 9:6
Mux the designated input to
LED_ACT_LED.
R/W 0001b 0001b
LED Blink Disable 10
Disable the LINK_ACT_LED Blink
Logic.
0b = Enable logic.
1b = Disable logic.
R/W 1b 1b
LED Stretch Disable 11
Disable the LINK_ACT_LED Extension
Logic.
0b = Enable logic.
1b = Disable logic.
Note: Only when both the stretch and
blink are disabled the input bypasses
the blink logic and is muxed out with no
sampling (only combinational logic).
R/W 0b 0b
Invert Select 12
When set to 1b, all LED outputs are
inverted.
R/W 0b 0b
Reserved 14:13
Always read as 0b. Write to 0b for
normal operation
R/W 00b 00b
Disable 10 Power
Saving
15
This bit is used to disable special power
saving in 10BASE-T mode and parallel
detection. When set to 1b, power
reduction features of 10BASE-10 are
disabled (reserved for customers).
R/W 0b 0b
Table 13-43. SPEED_TEN_LED and LINK_ACT_LED Bit Description