Airspan AirUnity 545


 * AirUnity 545 (Sprint Magic Box)
 * AirUnity 546 (B41HL), BH (B41HL, B25) • FCC Label
 * CPU: NXP (Freescale) MCIMX6X2EVN10AB @792MHz
 * WLAN: Qualcomm Atheros QCNFA344A NGFF M.2
 * FCC ID: PPD-QCNFA344A (05/01/2015)
 * P/N: Hon Hai (Foxconn) T77H644.01

Overview

 * Device includes two distinct boards within. Primary board used for system
 * control and carrier traffic relaying drivin by the LC4R-T modem.


 * Second board is dedicated to Femtocell operation. Boards are connected using a 14 pin
 * ribbon connector for 12v power along with a STP RJ45 cable for network access.


 * SSDP packets generated from the relay board for controlling the femtocell board.
 * System contains tamper detection circuitry. It appears booting the relay board
 * disconnected from the display and femtocell board will set it off.
 * Also booting the unit with the case open will set it off.

Serial

 * Relay Board: U-Boot console disabled.
 * 3.3v TTL UART located on right hand side (back PCB facing)
 * Pin1 (RX) - Pin2 (TX) - Pin3 (GND)
 * 115200 Baud


 * Femtocell Board:
 * RS232 port is connected to TTL UART with active voltage levels and no console output.
 * UART running at 1.8V stepped up to 3.3V prior to the RS232 controller.

Solder points exist for a second RS232 controller however no components have been placed.