MC145572APB Freescale Semiconductor, MC145572APB Datasheet - Page 34

• Manufacturer Part Number: MC145572APB
• Description: IC ISDN INTERFACE TXCVER 44-LQFP
• Manufacturer: Freescale Semiconductor
• Type: Transceiverr

Specifications of MC145572APB

• Protocol: RS232
• Voltage - Supply: 5V
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Number Of Line Interfaces: 1
• Control Interface: HDLC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Drivers/receivers: -
• Lead Free Status / Rohs Status: Not Compliant

pressing the activate push-button deactivates it.
LT side status LEDs. The same is true if there is no connection to the NT1 side U-Interface Transceiver,
except that the error status is displayed on the NT1 side LEDs.
3.1.3
One push-button is provided for activating/deactivating the U-Interface Transceivers without the necessity
of using a terminal. The activate push-button (PB2) can be pressed to activate/deactivate the U-interface.
Pressing the activate push-button toggles the current activation mode. If the U-Interface Transceiver(s) is
not activated, pressing the activate push-button activates it. If the U-Interface Transceiver(s) is activated,
Immediately following a reset, the board can be activated as an NT1 by pressing the activate push-button,
and the LT side U-Interface Transceiver will also attempt to activate. If there is no connection to the LT side
U-interface, the LT U-Interface Transceiver will not activate and an error condition will be displayed on the
3.1.4
The monitor software continually tests for a U-Interface Transceiver activation in progress. If this is detected,
the monitor automatically executes the appropriate activation routine(s).
Activation status is monitored visually from the status LEDs on each half of the board. When activation is
in progress, the TP/AIP LED turns on. All other LEDs are off. Successful activation is indicated by all LEDs
except for the EI LED being turned on. When activation fails, only the EI LED turns on.
3.1.5
The embedded operations channel register is a 12-bit register that appears in the U-Interface Transceiver
nibble register memory map, referred to as R6 in the MC145572 data sheet. It is written to or read from
by using either the NRL or NRN commands with register 6 speciÞed. The monitor always echoes back the
register name as R6, not NR6.
EXAMPLE
NTLT>NRN 6 152
R6:152
NTLT>
3.2
The following pages deÞne the command set to be used with the aid of an external terminal.
A summary of the MC145572EVK software command set:
ACT:
BRL:
BRN:
BRS:
The terminal interface does NOT have multiple character type ahead.
COMMAND SET
Push-Button Activation
General Comments About Activation
Embedded Operations Channel, Register R6
Activation/Deactivation Menu
Read/Write LT U-Interface Transceiver Byte Register
Read/Write NT U-Interface Transceiver Byte Register
Read/Write S/T-Interface Transceiver Byte Register
Write hex 152 to eoc framer
Freescale Semiconductor, Inc.
For More Information On This Product,
Updated R6 echoed to terminal
Command line prompt
Go to: www.freescale.com
NOTE
MC145572EVK
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