VSC8658 datasheet(52/95 Pages) MICROSEMI

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Configuration

VMDS-10242 VSC8658 Datasheet Revision 4.1

5.2.25

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

Table 35 •

LED Behavior, Address 30 (0x1E)

Bit

Name

Access

Description

Default

Copper and fiber LED

combine disable

R/W

This is a sticky bit.

0 = Combine enabled

(Copper/Fiber on

Link/LinkXXXX/Activity LED).

1 = Disable combination

(Link/LinkXXXX/Activity LED

indicates copper only).

Activity output select R/W

This is a sticky bit.

1 = Activity LED becomes

TX_Activity and fiber activity LED

becomes RX_Activity.

0 = TX and RX activity both

displayed on activity LEDs.

Reserved

LED pulsing enable

R/W

This is a sticky bit.

0 = Normal operation.

1 = LEDs pulse with a 5-kHz, 20%

duty cycle when active.

11:10

LED blink/

pulse-stretch rate

R/W

This is a sticky bit.

00 = 2.5-Hz blink rate / 400 ms

pulse-stretch.

01 = 5-Hz blink rate / 200 ms pulse-

stretch.

10 = 10-Hz blink rate / 100 ms

pulse-stretch.

11 = 20-Hz blink rate / 50 ms pulse-

stretch.

CMODE

Reserved

LED3 pulse-stretch/

blink select

R/W

This is a sticky bit.

1 = Pulse-stretch.

0 = Blink.

CMODE

LED2 pulse-stretch/

blink select

R/W

This is a sticky bit.

1 = Pulse-stretch.

0 = Blink.

CMODE

LED1 pulse-stretch/

blink select

R/W

This is a sticky bit.

1 = Pulse-stretch.

0 = Blink.

CMODE

LED0 pulse-stretch/

blink select

R/W

This is a sticky bit.

1 = Pulse-stretch.

0 = Blink.

CMODE

Reserved

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