Resets - 2.0 English

UHD SDI Audio LogiCORE IP Product Guide (PG309)
Document ID
PG309
Release Date
2021-12-01
Version
2.0 English
The UHD-SDI Audio (Embed) uses the following resets.
s_axi_aresetn
This is an Active-Low AXI4-Lite interface reset. This reset brings the core registers set and the interrupts to the default state.
s_axis_resetn
This is an Active-Low AXI4-Stream interface reset. This resets the entire logic working on s_axis_clk
sdi_embed_reset
This is an Active-High video domain reset. This resets the entire core except for the core register set and the interrupts.
Soft Reset
Two soft resets are provided apart from the reset ports mentioned above (Offset - 0x04).
  • The config_reset resets the core register set and the interrupts (equivalent to s_axi_aresetn)
  • The core_reset resets the entire core except for the core register set and the interrupts (equivalent to the sdi_embed_reset).
Note: When switching between video resolutions, there is a strict requirement to keep UHD-SDI Audio (Embed) under reset. It is recommended to follow the below sequence of steps.
  1. Assert core_reset or de-assert module_en.
  2. Change video resolution to be sent on SDI TX.
  3. Modify the configuration in SDI Embed (if any).
  4. De-assert core_reset or assert module_en.
The UHD-SDI Audio (Extract) uses the following resets.
s_axi_aresetn
This is Active-Low AXI4-Lite interface reset. This reset brings the core registers set and the interrupts to the default state.
m_axis_resetn
This is an Active-Low AXI4-Stream interface reset. This resets the entire logic working on m_axis_clk.
sdi_extract_reset
This is an Active-High video domain reset. This resets the entire core except for the core register set and the interrupts.
Soft Reset
Two soft resets are provided apart from the reset ports mentioned above (Offset - 0x04).
  • The config_reset signal resets the core register set and the interrupts (equivalent to s_axi_aresetn).
  • The core_reset signal resets the entire core except for the core register set and the interrupts (equivalent to the sdi_extract_reset).