Changes between Version 7 and Version 8 of Internal/USBNoise/WiBo


Ignore:
Timestamp:
Jun 23, 2006, 5:24:51 PM (18 years ago)
Author:
seskar
Comment:

—

Legend:

Unmodified
Added
Removed
Modified

  • Internal/USBNoise/WiBo

    v7 v8  
    11== USB Noise Generator: !WiBo (Wireless Board) ==
    22
    3 WiBo102 is a 4.00 x 4.00” printed circuit board (PCB) designed around a Maxim, Inc. MAX2829ETN+D radio transceiver chip. This chip incorporates most of the radio functions except for the reference oscillator, baseband I/Q amps, power amps and antenna switches.
     3WiBo102 is a 4.00 x 4.00” printed circuit board (PCB) designed around a Maxim, Inc. [attachment:MAX2828-9ds.pdf MAX2829ETN+D] radio transceiver chip. This chip incorporates most of the radio functions except for the reference oscillator, baseband I/Q amps, power amps and antenna switches.
    44
    55Four antennas (A01-A04) are mounted directly to WiBo102 though provision is made for adding SMA connectors and using off-board antennas if necessary.  Two antennas are primarily for transmission (Tx) and two for receiving (Rx).  Antenna switching is possible for diversity gain.
    … …  
    2020=== B. Connector J3_F and I/O ===
    2121 
    22 This is a 40-pin 2mm dual-inline connector which mates BiBo’s control signals, +3.3 VDC power and ground to WiBo102.
     22This is a 40-pin 2mm dual-inline connector which mates BaBo’s control signals, +3.3 VDC power and ground to WiBo.
    2323
    2424BiBo’s ADC (analog-to-digital conversion) and DAC (digital-to-analog) conversion comes from an Analog Devices AD9860 MxFE processor on the [wiki:Internal/ISBNoise/BaBo BaBo] board.  Digital RADIO_IO_x signals come from a Xilinx Spartan 3 on [wiki:Internal/ISBNoise/BaBo BaBo].
    2525
    26 RADIO_IO_1/3/4 download programming coefficients to the MAX2829.
     26RADIO_IO_1/3/4 download programming coefficients to the [attachment:MAX2828-9ds.pdf MAX2829].
    2727
    2828RADIO_IO_3/4 are shared with U2 ([attachment:MM74HC595.pdf 74HC595]), an 8bit serial in parallel out shift register. 
    2929U2 in turn controls five functions, namely, turn on/off of the 2GHz and 5GHz power amps, MAX2829 RXENA and TXENA signals and the MAX2829 shutdown (/SHDN).
    3030
    31 Assuming the MAX2829 has already been programmed, to enable a TX RF output the user must program a 11001xxx into U2. 
     31Assuming the [attachment:MAX2828-9ds.pdf MAX2829] has already been programmed, to enable a TX RF output the user must program a 11001xxx into U2. 
    3232
    3333NOTE! Do not turn on both the 2GHz and the 5GHz power amps at the same time!  ALSO! Do not turn on both the RXENA and TXENA lines (not sure why?).