Sundance Technology
ST201
PRELIMINARY draft 2
TXDMAFRAGLEN
Class | DMA Data Structures, TFD |
Base Address | Start of TFD |
Address Offset | 0x04+n·8 for nth fragment |
Access Mode | Read/Write |
Width | 32 bits |
Transmit Fragment Length (TxDMAFragLen) contains fragment length and control information for the block of data pointed to by the corresponding TxDMAFragAddr.
BIT
12..0
30..13
31
BIT NAME
FragLen
Reserved
TxDMAFragLast
BIT DESCRIPTION
The length of the contiguous block of data pointed to by the TxDMA- FragAddr. The maximum fragment length is 8192 bytes.
Reserved for future use. Should be set to 0.
Set by the host system to indicate the last fragment of the transmit frame and that the ST201 should proceed to the next TFD.
29
