ADIN1100CCPZ-R7 datasheet(9/80 Pages) AD

9 / 80 page

Data Sheet

ADIN1100

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

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Rev. B | 9 of 80

Figure 4. Pin Configuration

Table 8. Pin Function Descriptions

Pin No.

Mnemonic1

PU/PD2

Description

Clock Interface

CLK25_REF

N/A

Analog Reference Clock Output. The 25 MHz reference clock from the crystal

oscillator is available on the CLK25_REF pin. This pin can be used as an input

to another PHY. The 25 MHz clock output is briefly disabled (logic low) following

a software reset (25 ms) or a hardware reset (70 ms). See the Reset Operations

section for more details.

XTAL_I/CLK_IN

N/A

Input for Crystal (XTAL_I).

Single-Ended 25 MHz Reference Clock or 50 MHz Clock Input for RMII (CLK_IN).

XTAL_O

N/A

Crystal Output. If using a single-ended reference clock on XTAL_I/CLK_IN, leave

XTAL_O open circuit. See the External 25 MHz Clock Input for MII and RGMII

Modes section.

Management Interface

INT

Management Interface Interrupt Pin Output. Open-drain, active low output. A low

on INT indicates an unmasked management interrupt. This pin requires a 1.5 kΩ

pull-up resistor to VDDIO.

MDIO

Management Data Input/Output Synchronous to the MDC Clock. This pin is open-

drain and requires a 1.5 kΩ pull-up resistor to VDDIO.

MDC

Management Data Clock Input up to 2.5 MHz.

Reset

RESET

Hardware Reset, Active Low Input. Hold low for >10 μs to reset the device. This

pin can be left floating if a hardware reset is not required. See the Hardware Reset

section.

Media Dependent Interface (MDI)

TXN

N/A

Transmit Negative Pin.

RXN

N/A

Receive Negative Pin.

RXP

N/A

Receive Positive Pin.

TXP

N/A

Transmit Positive Pin.

MAC Interface

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