Realtek Ameba-D RTL872 D Series User Manual page 144

After each block transfer completes, hardware can retrieve the source status information from the address pointed to by the contents of the
SSTATARx register. This status information is then stored in the SSTATx register and written out to the SSTATx register location of the LLI before
the start of the next block. This register does not exist if DMAH_CHx_STAT_SRC is set to False; in this case, the read-back value is always 0.
Note: This register is a temporary placeholder for the source status information on its way to the SSTATx register location of the LLI. The source
status information should be retrieved by software from the SSTATx register location of the LLI, and not by a read of this register over the
DMAC slave interface.
If DMAH_RETURN_ERR_RESP is set to True, the DMAC returns an ERROR response to an illegal register access, which includes accessing
registers that have been removed during DMAC configuration. If DMAH_RETURN_ERR_RESP is set to False, DMAC always returns an OK
response.
Bit Name
63:32 RSVD
31:0 SSTAT
9.3.2.2.7 DSTATx

Name: Destination Status Register for Channel x

Size: 64 bits (upper 32 bits are reserved)

Address offset: for x = 0 to 7:

DSTAT0 – 0x028

DSTAT1 – 0x080

DSTAT2 – 0x0d8

DSTAT3 – 0x130

DSTAT4 – 0x188

DSTAT5 – 0x1e0

DSTAT6 – 0x238

DSTAT7 – 0x290

Read/write access: read/write
After the completion of each block transfer, hardware can retrieve the destination status information from the address pointed to by the
contents of the DSTATARx register. This status information is then stored in the DSTATx register and written out to the DSTATx register location
of the LLI before the start of the next block. This register does not exist if DMAH_CHx_STAT_DST is set to False; in this case, the read-back value
is always 0.
Note: This register is a temporary placeholder for the destination status information on its way to the DSTATx register location of the LLI. The
destination status information should be retrieved by software from the DSTATx register location of the LLI and not by a read of this register
over the DMAC slave interface.
If DMAH_RETURN_ERR_RESP is set to True, the DMAC returns an ERROR response to an illegal register access, which includes accessing
registers that have been removed during DMAC configuration. If DMAH_RETURN_ERR_RESP is set to False, DMAC always returns an OK
response.
Bit Name
63:32 RSVD
31:0 DSTAT
9.3.2.2.8 SSTATARx

Name: Source Status Address Register for Channel x

Size: 64 bits (upper 32 bits are reserved)

Address offset: for x = 0 to 7:

SSTATAR0 – 0x030

SSTATAR1 – 0x088
User Manual
Access Reset Description
N/A 0x0 Reserved
R/W 0x0 Source status information retrieved by hardware from the address pointed to by the
contents of the SSTATARx register.
Access Reset Description
N/A 0x0 Reserved
R/W 0x0 Destination status information retrieved by hardware from the address pointed to by the
contents of the DSTATARx register.
All information provided in this document is subject to legal disclaimers.
144
Ameba-D User Manual
© REALTEK 2019. All rights reserved.