Figure 380. Enhanced Transmit Descriptor - STMicroelectronics STM32F405 Reference Manual

RM0090
•
TDES4: Transmit descriptor Word4
Reserved
•
TDES5: Transmit descriptor Word5
Reserved
•
TDES6: Transmit descriptor Word6
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Bits 31:0 TTSL: Transmit frame time stamp low
This field is updated by DMA with the 32 least significant bits of the time stamp captured
for the corresponding transmit frame. This field has the time stamp only if the Last segment
control bit (LS) in the descriptor is set.
Ethernet (ETH): media access control (MAC) with DMA controller

Figure 380. Enhanced transmit descriptor

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