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Diffstat (limited to 'host/docs/usrp_b1xx.rst')
| -rw-r--r-- | host/docs/usrp_b1xx.rst | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/host/docs/usrp_b1xx.rst b/host/docs/usrp_b1xx.rst index 564fb89be..b38936021 100644 --- a/host/docs/usrp_b1xx.rst +++ b/host/docs/usrp_b1xx.rst @@ -5,10 +5,10 @@ UHD - USRP-B1XX Series Application Notes .. contents:: Table of Contents ------------------------------------------------------------------------ -Specify a non-standard image +Specify a Non-standard Image ------------------------------------------------------------------------ -The UHD will automatically select the USRP B-Series images from the installed images package. -The image selection can be overridden with the "fpga" and "fw" device address parameters. +UHD will automatically select the USRP B-Series images from the installed images package. +The image selection can be overridden with the **--fpga=** and **--fw=** device address parameters. Example device address string representations to specify non-standard images: @@ -21,37 +21,37 @@ Example device address string representations to specify non-standard images: fw=usrp_b100_fw_firmware.ihx ------------------------------------------------------------------------ -Changing the master clock rate +Changing the Master Clock Rate ------------------------------------------------------------------------ The master clock rate of the USRP embedded feeds both the FPGA DSP and the codec chip. Hundreds of rates between 32MHz and 64MHz are available. A few notable rates are: -* 64MHz - maximum rate of the codec chip -* 61.44MHz - good for UMTS/WCDMA applications -* 52Mhz - good for GSM applications +* **64MHz:** maximum rate of the codec chip +* **61.44MHz:** good for UMTS/WCDMA applications +* **52Mhz:** good for GSM applications ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Set 61.44MHz - uses external VCXO ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ To use the 61.44MHz clock rate, the USRP embedded will require two jumpers to be moved. -* J16 is a two pin header, remove the jumper (or leave it on pin1 only) -* J15 is a three pin header, move the jumper to (pin1, pin2) +* **J16** is a two pin header, remove the jumper (or leave it on pin1 only) +* **J15** is a three pin header, move the jumper to (pin1, pin2) -**Note:** See instructions below to communicate the desired clock rate into the UHD. +**Note:** See instructions below to communicate the desired clock rate into UHD. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Set other rates - uses internal VCO ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ To use other clock rates, the jumpers will need to be in the default position. -* J16 is a two pin header, move the jumper to (pin1, pin2) -* J15 is a three pin header, move the jumper to (pin2, pin3) +* **J16** is a two pin header, move the jumper to (pin1, pin2) +* **J15** is a three pin header, move the jumper to (pin2, pin3) -To communicate the desired clock rate into the UHD, +To communicate the desired clock rate into UHD, specify the a special device address argument, -where the key is "master_clock_rate" and the value is a rate in Hz. +where the key is **master_clock_rate** and the value is a rate in Hz. Example: :: @@ -84,4 +84,4 @@ Available Sensors The following sensors are available; they can be queried through the API. -* ref_locked - clock reference locked (internal/external) +* **ref_locked:** clock reference locked (internal/external) |