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參數(shù)資料
| 型號： | MC145572APB |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 28/52頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ISDN INTERFACE TXCVER 44-LQFP |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 類型： | 收發(fā)器 |
| 規(guī)程： | RS232 |
| 電源電壓： | 5V |
| 安裝類型： | 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 |
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35
MC145572EVK
NOTE
The terminal interface does NOT have multiple character type ahead.
3.1.3
Push-Button Activation
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,
pressing the activate push-button deactivates it.
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
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.
3.1.4
General Comments About Activation
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
Embedded Operations Channel, Register R6
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 specied. The monitor always echoes back the
register name as R6, not NR6.
EXAMPLE
NTLT>NRN 6 152
Write hex 152 to eoc framer
R6:152
Updated R6 echoed to terminal
NTLT>
Command line prompt
3.2
COMMAND SET
The following pages dene the command set to be used with the aid of an external terminal.
A summary of the MC145572EVK software command set:
ACT:
Activation/Deactivation Menu
BRL:
Read/Write LT U-Interface Transceiver Byte Register
BRN:
Read/Write NT U-Interface Transceiver Byte Register
BRS:
Read/Write S/T-Interface Transceiver Byte Register
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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