SPRUJC6A December 2024 – July 2025 AM2752-Q1 , AM2754-Q1
The Rx Channel Configuration Register is used to initialize static mode settings for the Rx DMA channel. This register may only be written when the channel is disabled (rx_enable in realtime control reg is 0).
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| Instance Name | Physical Address |
|---|---|
| DMASS0_PKTDMA_0 | 484C 0000h + formula |
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 |
| RX_PAUSE_ON_ERR | RESERVED | ||||||
| R/W | NONE | ||||||
| 0h | 0h | ||||||
| 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
| RESERVED | RX_CHAN_TYPE | ||||||
| NONE | R/W | ||||||
| 0h | 2h | ||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| RESERVED | RX_BURST_SIZE | RESERVED | |||||
| NONE | R/W | NONE | |||||
| 0h | 1h | 0h | |||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RESERVED | |||||||
| NONE | |||||||
| 0h | |||||||
| Bit | Field | Type | Reset | Description |
|---|---|---|---|---|
| 31 | RX_PAUSE_ON_ERR | R/W | 0h | Pause On Error: this field controls what the channel will do if an error or exception occurs during a data transfer. This field is encoded as follows: 0 = Channel will drop current work and move on 1 = Channel will pause and wait for SW to investigate and un-pause the channel. Reset Source: rst_mod_g_rst_n |
| 30:20 | RESERVED | NONE | 0h | Reserved |
| 19:16 | RX_CHAN_TYPE | R/W | 2h | Rx Channel Type: this field controls and / or indicates the functional channel type for this channel and the work passing mechanism that the channel uses for communicating with the Host. Available channel types are as follows: 2 = Channel performs packet oriented data transfers using pass by reference rings. Channels configured in this mode can only use Host and Monolithic descriptors and the pointers to those descriptors are passed from/to SW using rings in the Ring Accelerator. 3 = Channel performs packet oriented data transfers using pass by reference rings with single buffer packet mode enabled. Channels configured in this mode can only use Host descriptors and each descriptor will be processed as an independent packet (no buffer chaining). This is the only packet oriented mode that can be used with data sources that are infinite streams (no EOP) 2 Normal channel 3 Single buffer mode channel |
| 15:12 | RESERVED | NONE | 0h | Reserved |
| 11:10 | RX_BURST_SIZE | R/W | 1h | Specifies the nominal burst size and alignment for data transfers on this channel. 0,1 = 64 Bytes 2 = 128 Bytes All other values are reserved Reset Source: rst_mod_g_rst_n |
| 9:0 | RESERVED | NONE | 0h | Reserved |