When encoding, only hard data is input. This is provided in bytes, with up to 64 bytes transferred per cycle depending on the setting of the AXIS_WIDTH.DIN parameter.
| Bit Width for Each AXIS_WIDTH.DIN Setting | Field | Bits | Description | ||
|---|---|---|---|---|---|
| 4x | 2x | 1x | |||
| 512b | 256b | 128b | hbyte(0) | 7:0 | Bits m(7:0) to be encoded |
| ...… | |||||
| hbyte(15) | 127:120 | Bits m(127:120) to be encoded | |||
| Unused | hbyte(31:16) | 255:128 | Bits m(255:128) to be encoded | ||
| Unused | hbyte(63:32) | 511:256 | Bits m(511:256) to be encoded | ||
Only the information bits (which consists of K bits) must be provided. To aid
integration, the TLAST input for this interface should be driven with a
1 for the last transfer of a block. This input is not used for synchronization of the
input, but it is checked and an interrupt is available to signal inconsistencies.