From c926e2960cbd3f89b8aa364f9e2ee49b9dd338b7 Mon Sep 17 00:00:00 2001 From: SHoenerNI <48597655+SHoenerNI@users.noreply.github.com> Date: Fri, 17 Jan 2025 16:21:38 +0100 Subject: [PATCH] doc: Update usrp_x4xx.dox with table for supported sample rate examples and links to KB and X440 Spec. doc: Update usrp_x4xx.dox with table for supported sample rate examples and links to KB and X440 Spec. Co-Authored-By: Aki Tomita <121511582+atomita-ni@users.noreply.github.com> --- host/docs/usrp_x4xx.dox | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/host/docs/usrp_x4xx.dox b/host/docs/usrp_x4xx.dox index 421d47a5d..d2bbd7aa7 100644 --- a/host/docs/usrp_x4xx.dox +++ b/host/docs/usrp_x4xx.dox @@ -1026,7 +1026,18 @@ select set of MCR during testing and design validation. For the X440, these are: |307.2 MHz | 2.4576 GHz | 8 | 245.76 MHz | xx_400, \n xx_1600 | Highest PLL VCO Rate | |125 MHz | 1.0 GHz | 8 | 100 MHz | xx_200, \n xx_400, \n xx_1600 | Minimum Fc | -\n +Examples of Supported Sampling Rates +| Sample Rate(s) per channel | Use case / comment | +|:--:|--| +|2.048 GSps|Highest sample rate| +|125MSps|Lowest sample rate without DSP| +|2GSps, 1.5GSps, 1GSps, 500MSps, 250MSps | Even multiples of 250MSps | +|20MSps*, 40MSps*, 80MSps*, 160MSps, 320MSps | IEEE 802.11 (Wi-Fi) rates | +|30.72MSps*, 61.44MSps*, 122.88MSps*, 245.76MSps, 491.52MSps| 3GPP Wireless Communications rates| +\*= achievable via DDC/DUC in FPGA fabric + +Note: See KB article [About Sampling Rates and Master Clock Rates for the USRP X440](https://kb.ettus.com/About_Sampling_Rates_and_Master_Clock_Rates_for_the_USRP_X440) for the full list of supported rates. See [X440 specifications](https://www.ni.com/docs/en-US/bundle/ettus-usrp-x440-specs/page/specs.html) for additional information. + For all devices, changing the master clock rate during a running session is not supported. Once a UHD session is initialized, the master clock rate is fixed. For that reason, uhd::usrp::multi_usrp::get_master_clock_rate_range() will