MC145572EVK 데이터 시트보기 (PDF) - Motorola => Freescale

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MC145572EVK

ISDN U-Interface Transceiver Evaluation Kit

Motorola => Freescale 

Freescale Semiconductor, Inc.

ISDN LOOP

SIMULATOR

5 V/250 mA

+5 GND

EIA-232C

TERMINAL

J12

J16

NT

J2

PB1

J19

LT

PB2

Figure 1-4. External Connections to the MC145572EVK

The board is now ready for power.

5. Connect + 5 V and ground leads to the proper pins on J19.

Make certain the integrity of the power supply being used has been veriÞed to prevent any damage to the

MC145572EVK.

6. Turn the power supply on.

If everything is okay, the red LED ÒD27Ó near the power connector will be illuminated.

7. Connect a twisted pair between the two RJ-45 connectors, J12 and J2, at the top of the board.

This is the ÒU-loop.Ó

8. Depress the RESET push-button (PB1). This push-button is located adjacent to the power

connector.

9. Now depress the push-button marked ACT/DEA (PB2) located near the status LEDs.

The yellow TP/AIP status LEDs on both the NT1 and LT sides should illuminate, followed by both green

LEDs, SFS and LINKUP. This activation process should occur within 15 seconds. The NT side default

activation mode is an NT1 so the S/T-Interface is also trying to activate by continually transmitting the

INFO1 state on the S/T-Interface. If the red LED EI comes on, indicating an activation error has occurred,

re-check the integrity of the connections (i.e., does the ÒU-loopÓ twisted pair show continuity?). Retry if

necessary.

MOTOROLA

For More Information On This Product,

Go to: www.freescale.com

MC145572EVK

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