SWRZ147A October   2023  – December 2023 CC3300 , CC3301

 

  1.   1
  2.   Abstract
  3. 1Advisories Matrix
  4. 2Nomenclature, Package Symbolization, and Revision Identification
    1. 2.1 Device and Development Support Tool Nomenclature
    2. 2.2 Devices Supported
    3. 2.3 Package Symbolization and Revision Identification
  5. 3Silicon Revision 2.0 Advisories
    1. 3.1 Advisory RADIO_01
    2. 3.2 Advisory RADIO_02
    3. 3.3 Advisory WiFi_01
  6. 4Trademarks
  7. 5Revision History

3.3 Advisory WiFi_01

Throughput impact at short range due to minor statistical variation of downstream rate selection

Revisions Affected

PG2.0

Details

When the CC330x device is physically close to an Access Point that it is associated with, and operating in 802.11ax mode, data packets sent from the Access Point downstream to the device are generally expected to be transmitted using Modulation Coding Scheme 7 (MCS7). This will be observed in most cases, however, there are situations in which the Access Point may use MCS4-6 slightly more often than expected instead of MCS7 for downstream traffic. This can result in lower throughput at short ranges. Data sent upstream from the CC330x to the Access Point is not impacted. Typical application operation is not expected to be affected by this behavior.

Workaround

This issue is expected to be resolved by a very limited scope revision to CC3301 digital receive path logic that will be in volume production in March 2024 as a HW and SW “drop-in compatible” replacement. TI will issue a Product Change Notification to provided advanced notice of the change.