ADIN2111CCPZ-R7 datasheet(21/129 Pages) AD

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Data Sheet

ADIN2111

THEORY OF OPERATION

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Rev. A | 21 of 129

is configurable for each LED using the LED0_FUNCTION and

LED1_FUNCTION bits in the LED control register (LED_CNTRL).

Note that the 7, 8, 9, and 10 (decimal) bit settings for LED0_FUNC-

TION and LED1_FUNCTION are not available in LED Mode 2.

LED Mode

For each of the ADIN2111 LED pins, the activity behavior can be

configured using the two LED modes, as follows:

►

LED Mode 1: blink duty cycle defined using the LED 0 on/off

blink time register (LED0_BLINK_TIME_CNTRL)

►

LED Mode 2: blink duty cycle automatically defined by the

ADIN2111 based on activity level (%)

LED Pins Configuration Summary

See Table 15 for the configuration options of the Px_LED_x pins.

Table 15. LED Pins Configuration Summary

Parameter

Px_LED_0

Px_LED_1

Pin Number

19 (P1_LED_0), 47 (P2_LED_0)

21 (P1_LED_1), 48 (P2_LED_1)

Internal Pull-Up or Pull-Down Resistor

Pull-up

Pull-down

Status at Power-Up or Reset

Enabled

Disabled (via pin mux)

LED Pin Mux

Not applicable

DIGIO_LED1_PINMUX bits in the Pin Mux Configuration 1

Enable LED

LED0_EN bit in the LED control register (default: enabled)

LED1_EN bit in the LED control register (default: LED_1 output

not enabled)

LED Polarity

LED0_POLARITY bits in the LED polarity register (default:

autosense)

LED1_POLARITY bits in the LED polarity register (default:

autosense)

LED Mode

LED0_MODE bit in the LED control register (default: LED Mode

LED1_MODE bit in the LED control register (default: LED Mode

LED Function1

LED0_FUNCTION bits in the LED control register (default:

LINKUP_TXRX_ACTIVITY)

LED1_FUNCTION bits in the LED control register (default:

TXRX_ACTIVITY)

LED Blink Rate

LED0_BLINK_TIME_CNTRL in the LED 0 on/off blink time

LED1_BLINK_TIME_CNTRL in the LED 1 on/off blink time

Maximum Current2

8 mA at 3.3 V

1 The 7, 8, 9, and 10 (decimal) settings for the LEDx_FUNCTION bits are not available in Mode 2.

2 See Table 1 for details.

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