參數(shù)資料
型號(hào)： MC145572APB
廠商： Freescale Semiconductor
文件頁(yè)數(shù)： 2/52頁(yè)
文件大?。?/td> 0K
描述： IC ISDN INTERFACE TXCVER 44-LQFP
標(biāo)準(zhǔn)包裝： 160
類(lèi)型： 收發(fā)器
規(guī)程： RS232
電源電壓： 5V
安裝類(lèi)型： 表面貼裝
封裝/外殼： 44-LQFP
供應(yīng)商設(shè)備封裝： 44-LQFP（10x10）
包裝： 托盤(pán)
11
MC145572EVK
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 veried to prevent any damage to the
MC145572EVK.
6. Turn the power supply on.
If everything is okay, the red LED D27 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 U-loop.
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 U-loop twisted pair show continuity?). Retry if
necessary.
ISDN LOOP
SIMULATOR
J12
J2
J16
5 V/250 mA
+5
GND
EIA-232C
NT
LT
TERMINAL
J19
PB1
PB2
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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