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CHANGELOG: Update UHD 4.11 new features descriptions
- Updated the description of the fabric resampler addition. - Corrected the documentation for the default state of the MPM serialization setting.
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Jörg Hofrichter
mkoop-ni
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42
CHANGELOG
42
CHANGELOG
@ -11,19 +11,25 @@ Change Log for Releases
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- Migrated the MPM RPC transport layer from mprpc (msgpack-RPC) to gRPC/Protobuf,
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impacting all embedded devices running MPM.
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* New Features
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- X420 and X440:
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- The X420_X4_200, X420_CG_400, X420_X4_400 and X440_X4_200 FPGA images now use
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fixed fabric resamplers (3x) and RFDC resamplers instead of RFDC resamplers alone.
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This ensures repeatable phase offsets between devices and reboots. Note that
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this feature is currently mutually exclusive with dual rate support, and it
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increases the resource utilization. To revert to the previous image with
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non-repeatable phase offsets, a custom image must be built.
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- X420:
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- Added support for the 400 MHz FPGA variants, including the X420_CG_400
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and X420_X4_400 images.
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- X440:
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- The X440_X4_200 image now uses fabric resamplers instead of RFDC
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resamplers, which ensures repeatable phase offsets between devices and
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reboots. Note that this feature is currently mutually exclusive with dual
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rate support, and it increases the resource utilization. To revert to the
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previous image with non-repeatable phase offsets, a custom image must be
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built. By default, it is set to false (i.e., same as old behavior),
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except for the X440_X4_200 image.
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- A new BSP parameter (USE_FABRIC_RESAMPLERS) is introduced to toggle this
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new feature.
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- X4xx: The ref_locked sensor no longer queries the sticky bits; instead, it
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only reports the current lock state. The ref_stable sensor is added to
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include the sticky bits.
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- Introduced a new BSP parameter (USE_FABRIC_RESAMPLERS) in the X4_200 image
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to enable easy toggling between using fixed fabric resamplers (the new default)
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and the previous behavior. The parameter is set to true (use fixed fabric
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resamplers) in this image and is not available in other X440 FPGA images.
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- X4xx:
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- The ref_locked sensor no longer queries the sticky bits; instead, it
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only reports the current lock state. The ref_stable sensor is added to
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include the sticky bits.
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- Python:
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- The ref_clk_calibration feature is now accessible in the Python API.
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- Streamers:
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@ -69,10 +75,6 @@ Change Log for Releases
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previous behavior.
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- MPM-based devices can now be initialized in parallel within a MultiUSRP
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session.
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- X420:
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- Added support for the 400 MHz FPGA variants, including the X420_CG_400
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and X420_X4_400 images.
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- Added fabric-resampler support to the X420 FPGA designs.
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- GPS:
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- Added support for UBLOX communication.
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- Improved compatibility with GPS receivers by accepting additional
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@ -100,8 +102,8 @@ Change Log for Releases
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- Some logging APIs that previously used boost::posix_time are now
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declared deprecated, and alternatives that use standard C++ constructs have
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been introduced.
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- MPM device initialization is parallel by default. The serialize_init=1
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device argument restores serial initialization.
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- MPM device initialization is serial by default. The `init_threads=N`
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device argument enables parallel initialization.
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- Added an option to resynchronize X4xx SPLL R-dividers after reference-lock
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loss using reset_spll_r_divider=1 in the synchronization arguments. This
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is intended for advanced users only.
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@ -485,8 +487,8 @@ Changes compared to UHD 4.9.0.0:
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- Add device DNA feature for X310, X410, X440. This allows reading back the
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FPGA's DNA, which is a unique identifier.
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- Embedded OS for E3xx, N3xx, and X4xx devices
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- With the switch to Yocto 4.0 (kirkstone), the SD card and eMMC images no
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longer pre-populate the second system partition. Refer to the device
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- With the switch to Yocto 4.0 (kirkstone), the SD card and eMMC images no
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longer pre-populate the second system partition. Refer to the device
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specific "Updating Filesystems" section in the user manual for how to populate it.
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This reduces the size of compressed .sdimg filesystem images.
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- X440
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@ -3,24 +3,31 @@ uhd (4.11.0.0-0ubuntu1) ubuntu_release; urgency=low
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* Highlights / Main Changes
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- Add support for the new USRP B310, a PCIe/Thunderbolt-based device which
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supports 2x2 RF channels at up to 100 MHz bandwidth per channel.
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- Add support for X410, X420 and X440 variants with locked FPGA
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- Update underlying OE version on embedded devices to Scarthgap (5.0 LTS).
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Note that some of the MPM updates require this update.
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- Migrated the MPM RPC transport layer from mprpc (msgpack-RPC) to gRPC/Protobuf,
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impacting all embedded devices running MPM.
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* New Features
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- X420 and X440:
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- The X420_X4_200, X420_CG_400, X420_X4_400 and X440_X4_200 FPGA images now use
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fixed fabric resamplers (3x) and RFDC resamplers instead of RFDC resamplers alone.
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This ensures repeatable phase offsets between devices and reboots. Note that
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this feature is currently mutually exclusive with dual rate support, and it
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increases the resource utilization. To revert to the previous image with
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non-repeatable phase offsets, a custom image must be built.
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- X420:
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- Added support for the 400 MHz FPGA variants, including the X420_CG_400
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and X420_X4_400 images.
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- X440:
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- The X440_X4_200 image now uses fabric resamplers instead of RFDC
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resamplers, which ensures repeatable phase offsets between devices and
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reboots. Note that this feature is currently mutually exclusive with dual
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rate support, and it increases the resource utilization. To revert to the
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previous image with non-repeatable phase offsets, a custom image must be
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built. By default, it is set to false (i.e., same as old behavior),
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except for the X440_X4_200 image.
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- A new BSP parameter (USE_FABRIC_RESAMPLERS) is introduced to toggle this
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new feature.
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- X4xx: The ref_locked sensor no longer queries the sticky bits; instead, it
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only reports the current lock state. The ref_stable sensor is added to
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include the sticky bits.
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- Introduced a new BSP parameter (USE_FABRIC_RESAMPLERS) in the X4_200 image
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to enable easy toggling between using fixed fabric resamplers (the new default)
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and the previous behavior. The parameter is set to true (use fixed fabric
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resamplers) in this image and is not available in other X440 FPGA images.
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- X4xx:
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- The ref_locked sensor no longer queries the sticky bits; instead, it
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only reports the current lock state. The ref_stable sensor is added to
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include the sticky bits.
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- Python:
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- The ref_clk_calibration feature is now accessible in the Python API.
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- Streamers:
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@ -45,12 +52,18 @@ uhd (4.11.0.0-0ubuntu1) ubuntu_release; urgency=low
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With this update, users can add the DDC and DUC blocks to their custom
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FPGA images for bandwidths up to 1600 MHz (2000 MSps).
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- Shipping FPGA images:
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- Added new shipping FPGA images for x420:
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- x420_X4_400
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- x420_CG_400
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- Added DDC and DUC functionality for all channels to the following
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shipping FPGA images:
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- x410_X4_400
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- x410_CG_400
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- x420_X4_400
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- x420_CG_400
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- x420_X4_1000
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- x420_CG_1000
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- x440_X4_800
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- x440_CG_800
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- x440_X4_1600
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- x440_CG_1600
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For custom designs based on one of these updated rfnoc_image_core.yml
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@ -60,10 +73,6 @@ uhd (4.11.0.0-0ubuntu1) ubuntu_release; urgency=low
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previous behavior.
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- MPM-based devices can now be initialized in parallel within a MultiUSRP
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session.
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- X420:
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- Added support for the 400 MHz FPGA variants, including the X420_CG_400
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and X420_X4_400 images.
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- Added fabric-resampler support to the X420 FPGA designs.
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- GPS:
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- Added support for UBLOX communication.
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- Improved compatibility with GPS receivers by accepting additional
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@ -91,8 +100,8 @@ uhd (4.11.0.0-0ubuntu1) ubuntu_release; urgency=low
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- Some logging APIs that previously used boost::posix_time are now
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declared deprecated, and alternatives that use standard C++ constructs have
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been introduced.
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- MPM device initialization is parallel by default. The serialize_init=1
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device argument restores serial initialization.
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- MPM device initialization is serial by default. The `init_threads=N`
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device argument enables parallel initialization.
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- Added an option to resynchronize X4xx SPLL R-dividers after reference-lock
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loss using reset_spll_r_divider=1 in the synchronization arguments. This
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is intended for advanced users only.
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@ -123,7 +132,7 @@ uhd (4.11.0.0-0ubuntu1) ubuntu_release; urgency=low
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- Windows: 10 22H2, 11 24H2
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- MacOS: Sequoia (15.7)
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-- Ettus Research <uhd.maintainer@emerson.com> Wed, 12 Aug 2026 02:05:23 -0800
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-- Ettus Research <uhd.maintainer@emerson.com> Wed, 02 Sep 2026 05:54:06 -0800
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uhd (4.10.0.0-0ubuntu1) ubuntu_release; urgency=low
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