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Dimetra EBTS Base Radio Controller » History » Version 7

laforge, 02/21/2016 11:32 AM

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{{>toc}}
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h1. BR Controller (CAE010CMX)
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This is s small PowerPC based embedded system. It communicates with the TETRA Site Controller (TSC) over 10-Base-2 Ethernet and controls all the other units of the Base Radio via the backplane of the BR cabinet.
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It has the following connections:
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* RS-232 on the back of the BR
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* RS-232 on the front of the BR
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* Site Alarm I/O on the back of the BR
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* 10-Base-2 Ethernet on the back of the BR (BNC)
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* Clock input on the back of the BR (BNC) 
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h2. Images
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!{width:60%}tetra_br_controller_pcb.jpg!
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h2. Hardware
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The hardware is a typical embedded design centered around MPC860 PowerPC:
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* XPC860DECZP33C1 (MPC860 PowerPC SoC)
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** User Manual: http://cache.freescale.com/files/netcomm/doc/ref_manual/MPC860UM.pdf
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** Hardware Specs: http://cache.freescale.com/files/32bit/doc/data_sheet/MPC860EC.pdf
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** BDM/JTAG: http://cache.freescale.com/files/netcomm/doc/app_note/AN2387.pdf
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** Seems like P3 is the BDM/JTAG port for it
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* 4x AM29LV017D (16MBit NOR Flash), total capacity = 8MByte
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** http://www.datasheetcatalog.org/datasheet/AdvancedMicroDevices/mXwrvv.pdf
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* CT2M64S4D10.8T66 (16MByte SDRAM module)
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* NE83C92A coaxial Ethernet transceiver 
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** http://pdf1.alldatasheet.com/datasheet-pdf/view/17992/PHILIPS/NE83C92A.html
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* XC56307GC100E (24-bit DSP56307 Digital Signal Processor)
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** http://www.datasheetcatalog.org/datasheet/motorola/DSP56307.pdf
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** Seems like P1000 is the [[OnCE]]/JTAG port for it
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h2. Software
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h3. boot loader
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There is a bootloader pre-installed in the Base Radio.
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h3. radio application
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It seems like the BR Controller is downloading its software via the Ethernet link from the [[[Dimetra_EBTSSite_Controller]]]
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h2. Console logs
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h3. Normal boot
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During normal boot, the console output is as follows:
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<pre>
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RAM Test: .... passed
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Base Radio Controller
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Version R07.00.20
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Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
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Motorola Inc.  All rights reserved.
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Ethernet Test: passed
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Running from boot code area
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To enter configuration mode, hit any key within 10 seconds:
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Starting BRC registration
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Waiting for Registration 
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Waiting for Registration 
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Waiting for Registration 
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Waiting for Registration 
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Waiting for Registration 
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Waiting for Registration 
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</pre>
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where at the end it is probably waiting to register with the [[[Dimetra_EBTSSite_Controller]]]
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h3. configuration mode
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If the boot process is interrupted, you get into configuration mode:
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<pre>
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RAM Test: .... passed
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Base Radio Controller
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Version R07.00.20
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Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
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Motorola Inc.  All rights reserved.
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Ethernet Test: passed
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Running from boot code area
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To enter configuration mode, hit any key within 10 seconds:
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Running config
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Base Radio Controller
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Version D07.00.20-TETRA-BRC-ROM
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Software part number PC895F006000070020
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Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
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Motorola Inc.  All rights reserved.
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Unauthorized Access Prohibited
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        correcting TXLIN register 0x0 from 0x10 to 0x56
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        INITILIZATION FAILURE: Pendulum lock failure.
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*** REPEATER FAILED HW INITILIZATION ***
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DSP bootloader complete
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Enter login password: 
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LOGIN: <FIELD>
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BRC> 
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</pre>
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The default password seems to be "motorola" for the <FIELD> mode.
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For more information see [[[Dimetra_EBTSBase_RadioControllerCLI]]]
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