User's Manual

4.43 Receive CPPI DMA State Word 6 (RCPPIDMASTATEW6)
4.44 Receive CPPI Completion Pointer (RCPPICOMPPTR)
Registers www.ti.com
The Receive CPPI DMA State Word 6 (RCPPIDMASTATEW6) is shown in Figure 58 and described in
Table 59 .
Figure 58. Receive CPPI DMA State Word 6 (RCPPIDMASTATEW6)
31 16
SOP_BUFFER_BYTECNT
R/W-0
15 0
CURR_BUFFER_BYTECNT
R/W-0
LEGEND: R/W = Read/Write; - n = value after reset
Table 59. Receive CPPI DMA State Word 6 (RCPPIDMASTATEW6) Field Descriptions
Bit Field Value Description
31-16 SOP_BUFFER_BYTECNT 0-FFFFh Packet Length
Indicates how many bytes are contained in the packet. This value is written into
bits 15:0 of Word 3 of the SOP Descriptor during end of packet processing.
15-0 CURR_BUFFER_BYTECNT 0-FFFFh Current Buffer Length
Indicates how many free bytes remain in the current buffer that is being received
into
The Receive CPPI Completion Pointer (RCPPICOMPPTR) is shown in Figure 59 and described in
Table 60 .
Figure 59. Receive CPPI Completion Pointer (RCPPICOMPPTR)
31 16
DESC_ADDR
R/W-0
15 2 1 0
DESC_ADDR Reserved RDBK_MODE
R/W-0 R-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; - n = value after reset
Table 60. Receive CPPI Completion Pointer (RCPPICOMPPTR) Field Descriptions
Bit Field Value Description
31-2 DESC_ADDR 0-7FFF FFFFh Descriptor Address
This field contains the 30-bit word aligned pointer of the end of packet descriptor that the
DMA has last processed.
1 Reserved 0 Reserved
110 Universal Serial Bus (USB) Controller SPRUGH3 – November 2008
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