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diff --git a/host/docs/usrp1.rst b/host/docs/usrp1.rst deleted file mode 100644 index be74fe00a..000000000 --- a/host/docs/usrp1.rst +++ /dev/null @@ -1,111 +0,0 @@ -======================================================================== -UHD - USRP1 Device Manual -======================================================================== - -.. contents:: Table of Contents - ------------------------------------------------------------------------- -Comparative features list ------------------------------------------------------------------------- - -**Hardware Capabilities:** - * 2 transceiver card slots - * 64 MHz fixed clock rate - -**FPGA Capabilities:** - * 2 RX DDC chains in FPGA - * 2 TX DUC chains in FPGA (no TX CORDIC -> uses DAC) - * sc16 sample modes - RX & TX - - - Up to 8 MHz of RF BW with 16-bit samples - - * sc8 sample mode - RX only - - - Up to 16 MHz of RF BW with 8-bit samples - ------------------------------------------------------------------------- -Specify a Non-standard Image ------------------------------------------------------------------------- -The standard USRP1 images installer comes with two FPGA images: - * **usrp1_fpga.rbf:** 2 DDCs + 2 DUCs - * **usrp1_fpga_4rx.rbf:** 4 DDCs + 0 DUCs - -By default, the USRP1 uses the FPGA image with 2 DDCs and 2 DUCs. -However, a device address parameter can be used to override -the FPGA image selection to use an alternate or a custom FPGA image. -See the images application notes for installing custom images. - -Example device address string representations to specify non-standard firmware and/or FPGA images: - -:: - - fpga=usrp1_fpga_4rx.rbf - - -- OR -- - - fw=usrp1_fw_custom.ihx - - -- OR -- - - fpga=usrp1_fpga_4rx.rbf, fw=usrp1_fw_custom.ihx - ------------------------------------------------------------------------- -Missing and Emulated Features ------------------------------------------------------------------------- -The USRP1 FPGA does not have the necessary space to support the advanced -streaming capabilities that are possible with the newer USRP devices. -Some of these features are emulated in software to support the API. - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -List of emulated features -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -* Setting the current device time -* Getting the current device time -* Transmitting at a specific time -* Transmitting a specific number of samples -* Receiving at a specific time -* Receiving a specific number of samples -* End of burst flags for transmit/receive -* Notification on late stream command -* Notification on late transmit packet -* Notification on underflow or overflow -* Notification on broken chain error - -**Note:** -These emulated features rely on the host system's clock for timed operations -and therefore may not have sufficient precision for the application. - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -List of missing features -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -* Start of burst flags for transmit/receive - ------------------------------------------------------------------------- -Hardware Setup Notes ------------------------------------------------------------------------- - -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -External clock modification -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -The USRP device can be modified to accept an external clock reference instead of the 64MHz onboard reference. - * Solder SMA (**LTI-SASF54GT**) connector to **J2001**. - * Move 0 ohm 0603 resistor **R2029** to **R2030**. - * Move 0.01uF 0603 capacitor **C925** to **C926**. - * Remove 0.01uF 0603 capacitor **C924**. - -The new external clock needs to be a square wave between +7dBm and +15dBm - -After the hardware modification, -the user should burn the setting into the EEPROM, -so UHD software can initialize with the correct clock rate. -Run the following commands to record the setting into the EEPROM: -:: - - cd <install-path>/lib/uhd/utils - ./usrp_burn_mb_eeprom --args=<optional device args> --key=mcr --val=<rate> - -The user may override the clock rate specified in the EEPROM by using a device address: -Example: -:: - - uhd_usrp_probe --args="mcr=52e6" |