VSC8540RT datasheet(47/87 Pages) MICROCHIP

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DS60001603E-page 47

VSC8540RT

6.2.22

LED MODE SELECT

The device LED outputs are controlled using the bits in register 29 of the main register space. The following table shows

the information needed to access the functionality of each of the outputs. For more information about LED modes, see

Table 5-14. For information about enabling the extended LED mode bits in Register 19E1 bits 13 to 12, see Table 5-16

6.2.23

LED BEHAVIOR

The bits in register 30 control and enable you to read the status of the pulse or blink rate of the device LEDs. The fol-

lowing table shows the settings you can write to the register or read from the register.

ActiPHY link status time-out control [1] R/W

Sticky bit. Bits 7 and 2 are part of the ActiPHY

Link Status time-out control. Bit 7 is the MSB.

00: 2.3 seconds.

01: 3.3 seconds.

10: 4.3 seconds.

11: 5.3 seconds.

ActiPHY mode enable

R/W

Sticky bit.

1: Enabled.

FDX status

1: Full-duplex.

0: Half-duplex.

4:3 Speed status

00: Speed is 10BASE-T.

01: Speed is 100BASE-TX.

10: Reserved.

11: Reserved.

ActiPHY link status time-out control [0] R/W

Sticky bit. Bits 7 and 2 are part of the ActiPHY

Link Status time-out control. Bit 7 is the MSB.

00: 2.3 seconds.

01: 3.3 seconds.

10: 4.3 seconds.

11: 5.3 seconds.

1:0 Media mode status

00: No media selected.

01: Copper media selected.

10: Reserved.

11: Reserved.

TABLE 6-25:

LED MODE SELECT, ADDRESS 29 (0X1D)

Bit

Name

Access

Description

Default

Reserved

Reserved.

14:8

Reserved

Reserved.

7:4

LED1 mode select R/W

Sticky bit. Select from LED modes 0–15.

0101

3:0

LED0 mode select R/W

Sticky bit. Select from LED modes 0–15.

0100

TABLE 6-26:

LED BEHAVIOR, ADDRESS 30 (0X1E)

Bit

Name

Access

Description

Default

15:13 Reserved

Reserved.

LED pulsing enable

R/W

Sticky bit.

0: Normal operation.

1: LEDs pulse with a 5 kHz, programmable duty

cycle when active.

TABLE 6-24:

AUXILIARY CONTROL AND STATUS, ADDRESS 28 (0X1C) (CONTINUED)

Bit

Name

Access

Description

Default

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