ADIN1111CCPZ-R7 datasheet(14/109 Pages) AD

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Data Sheet

ADIN1111

THEORY OF OPERATION

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Rev. A | 14 of 109

PHY Subsystem Reset

The PHY subsystem is the part of the ADIN1111 that incorporates

the 10BASE-T1L PHY transceiver analog and digital circuits. A

PHY subsystem reset is initiated by setting the PHY subsystem

reset register bit (CRSM_PHY_SUBSYS_RST). When this bit is

set, the PHY subsystem is reset. The reset is applied for about

1.2 µs and then this bit self clears. All of the PHY digital circuitry

is reset and any existing link drops. The management registers

are not initialized by this reset, and access to all the management

registers is available during the PHY subsystem reset. This is a

short reset and can be used to put the device into a known state

while retaining any software initialization of the device.

LED FUNCTIONS

LED_0 and LED_1 can be configured to display various activities

of the ADIN1111 using the LED function feature. The LED function

is configurable using the LED0_FUNCTION and LED1_FUNCTION

bits (see the LED Control Register section).

The 7, 8, 9, and 10 (decimal) bit settings for LEDx_FUNCTION are

not available in LED Mode 2.

Table 9. LED_x Pins Configuration Summary

Parameter

LED_0

LED_1

Pin Number

Internal Pull-Up or Pull-

Down Resistor

Pull-up

Pull-down

Status at Power-Up or

Reset

Enabled

Disabled

LED Pin Mux

Not applicable

DIGIO_LED1_PINMUX bits (see the Pin Mux Configuration 1 Register

section)

Enable LED

LED0_EN bit (see the LED Control Register section)

LED1_EN bit (see the LED Control Register section)

LED Polarity

LED0_POLARITY bits (see the LED Polarity Register section)

LED1_POLARITY bits (see the LED Polarity Register section)

LED Mode

LED0_MODE bit (see the LED Control Register section), default: LED

Mode 1

LED1_MODE bit (see the LED Control Register section), default: LED

Mode 1

LED Function1

LED0_FUNCTION bits (see the LED Control Register section), default:

LINKUP_TXRX_ACTIVITY

LED1_FUNCTION bits (see the LED Control Register section), default:

TXRX_ACTIVITY

LED Blink Rate

LED0_BLINK_TIME_CNTRL (see the LED_0 On/Off Blink Time Register

section)

LED1_BLINK_TIME_CNTRL (see the LED 1 On/Off Blink Time Register

section

Maximum Current2

8 mA at 3.3 V

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

2 See Table 1.

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