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286
Software Developer’s Manual
Register Descriptions
Table 13-60. LED Control Bit Description
1
13.4.15.1
MODE Encodings for LED Outputs
1
The
to ensure proper understanding of expression polarity and
resulting LED output polarity.
Note:
All 16 modes listed are functional.
Field
Bit
Initial
Value
Value
Description
LED0_MODE
3:0
0010b
1
1.
These bits are read from the EEPROM.
LED0/LINK# Mode. This field specifies the control source for the
LED0 output. An initial value of 0010b selects LINK_UP# indication.
LED0 output. An initial value of 0010b selects LINK_UP# indication.
Reserved
5:4
00b
Reserved. Read-only as 0b. Write as 0b for future compatibility.
LED0_IVRT
6
0b
1
LED0/LINK# Invert. This field specifies the polarity/ inversion of the
LED source prior to output or blink control.
0b = do not invert LED source.
1b = invert LED source.
LED source prior to output or blink control.
0b = do not invert LED source.
1b = invert LED source.
LED0_BLINK
7
0b
1
LED0/LINK# Blink. This field specifies whether to apply blink logic to
the (possibly inverted) LED control source prior to the LED output.
0b = do not blink asserted LED output.
1b = blink asserted LED output.
the (possibly inverted) LED control source prior to the LED output.
0b = do not blink asserted LED output.
1b = blink asserted LED output.
LED1_MODE
11:8
0011b
LED1/ACTIVITY# Mode. This field specifies the control source for the
LED1 output. An initial value of 0011b selects ACTIVITY# indication.
LED1 output. An initial value of 0011b selects ACTIVITY# indication.
Reserved
13:12
00b
Reserved. Read-only as 0b. Write as 0b for future compatibility.
LED1_IVRT
14
0b
LED1/ACTIVITY# Invert.
LED1_BLINK
15
1b
LED1/ACTIVITY# Blink.
LED2_MODE
19:16
0110b
1
LED2/LINK100# Mode. This field specifies the control source for the
LED2 output. An initial value of 0011b selects LINK100# indication.
LED2 output. An initial value of 0011b selects LINK100# indication.
Reserved
21:20
00b
Reserved. Read-only as 0b. Write as 0b for future compatibility.
LED2_IVRT
22
0b
1
LED2/LINK100# Invert.
LED2_BLINK
23
0b
1
LED2/LINK100# Blink.
LED3_MODE
27:24
0111b
LED3/LINK1000# Mode. This field specifies the control source for the
LED3 output. An initial value of 0111b selects LINK1000# indication.
LED3 output. An initial value of 0111b selects LINK1000# indication.
Reserved
29:28
00b
Reserved. Read-only as 0b. Write as 0b for future compatibility.
LED3_IVRT
30
0b
LED3/LINK1000# Invert.
LED3_BLINK
31
0b
LED3/LINK1000# Blink.
1.
Not applicable to the 82544GC/EI.