ADIN1100CCPZ-R7 datasheet(35/78 Pages) AD

35 / 78 page

Data Sheet

ADIN1100

APPLICATIONS INFORMATION

analog.com

Rev. 0 | 35 of 78

Figure 22. Crystal Oscillator Connection

External Clock Input

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

XTAL_O open circuit. This clock must be an ac-coupled 0.8 V

p-p to 2.5 V p-p sine or (filtered) square wave signal. This signal

also applies when connecting the CLK25_REF output clock from

one 10BASE-T1L device to the XTAL_I/CLK_IN input of another

10BASE-T1L device. When using the RMII MAC interface, a single,

50 MHz reference clock signal (REF_CLK) is required, which can

be sourced from an external MAC chip or from an external refer-

ence clock.

In Figure 23, VS p-p is the peak-to-peak voltage of the clock source.

C1 is the series capacitor from the clock source to XTAL_I/CLK_IN.

C2 is the capacitor from XTAL_I/CLK_IN to ground.

If VS p-p < 2.5 V p-p,

►

C2 is not required

►

C1 = 1 nF

If VS p-p ≥ 2.5 V p-p,

►

C2 = 10 pF

►

C1 = 2.5 (13 pF + CPCBx)/(VS p-p – 2.5)

Figure 23. External Clock Connection

ELECTROMAGNETIC COMPATIBILITY (EMC)

AND ELECTROMAGNETIC IMMUNITY (EMI)

The ADIN1100 was tested at the system level for EMC and EMI.

Table 26 summarizes the results.

Table 26. EMC/EMI Tests Conducted on ADIN1100 at System Level

EMC/EMI Test

Withstand Threshold/Class

IEC 61000-4-4 EFT

±4 kV

IEC 61000-4-2 ESD (contact discharge) ±4 kV

IEC 61000-4-2 ESD (air discharge)

±8 kV

IEC 61000-4-5 Surge

±4 kV

IEC 61000-4-6 Conducted Immunity

10 V/m

IEC 61000-4-3 Radiated Immunity

Class A

EN 55032 Radiated Emissions

Class B

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