dmagrp_ahb_or_axi_status
<b> Register 11 (AHB or AXI Status Register) </b>
This register provides the active status of the AHB master interface or AXI interface's read and write channels. This register is present and valid only in the GMAC-AHB and GMAC-AXI configurations. This register is useful for debugging purposes. In addition, this register is valid only in the Channel 0 DMA when multiple channels are present in the AV mode.
Module Instance | Base Address | Register Address |
---|---|---|
i_emac_emac0 | 0xFF800000 | 0xFF80102C |
i_emac_emac1 | 0xFF802000 | 0xFF80302C |
i_emac_emac2 | 0xFF804000 | 0xFF80502C |
Size: 32
Offset: 0x102C
Access: RO
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
Bit Fields | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
reserved_31_2 RO 0x0 |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
reserved_31_2 RO 0x0 |
axirdsts RO 0x0 |
axwhsts RO 0x0 |
dmagrp_ahb_or_axi_status Fields
Bit | Name | Description | Access | Reset |
---|---|---|---|---|
31:2 | reserved_31_2 |
Reserved |
RO | 0x0 |
1 | axirdsts |
AXI Master Read Channel Status When high, it indicates that AXI Master's read channel is active and transferring data. |
RO | 0x0 |
0 | axwhsts |
AXI Master Write Channel or AHB Master Status When high, it indicates that AXI Master's write channel is active and transferring data in the GMAC-AXI configuration. In the GMAC-AHB configuration, it indicates that the AHB master interface FSMs are in the non-idle state. |
RO | 0x0 |