Texas Instruments TMS320DM357 User Manual
4.35 Transmit CPPI DMA State Word 5 (TCPPIDMASTATEW5)
4.36 Transmit CPPI Completion Pointer (TCPPICOMPPTR)
Registers
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Table 50. Transmit CPPI DMA State Word 4 (TCPPIDMASTATEW4) Field Descriptions (continued)
Bit
Field
Value
Description
15-0
CURR_BUFFER_LENGTH
0-FFFFh
Current Buffer Length
Indicates how many valid bytes remain in the current buffer that is being
transmitted from
transmitted from
The Transmit CPPI DMA State Word 5 (TCPPIDMASTATEW5) is shown in
and described in
.
Figure 50. Transmit CPPI DMA State Word 5 (TCPPIDMASTATEW5)
31
16
REM_LENGTH
R/W-0
15
0
LENGTH
R/W-0
LEGEND: R/W = Read/Write; -n = value after reset
Table 51. Transmit CPPI DMA State Word 5 (TCPPIDMASTATEW5) Field Descriptions
Bit
Field
Value
Description
31-16
REM_LENGTH
0-FFFFh
Remaining Packet Length
Indicates how many bytes remain to be transmitted in the packet before truncation occurs
15-0
LENGTH
0-FFFFh
Packet Length
Indicates how many bytes are contained in the packet. This value is copied from the
packet-length field in Word 3 of the SOP Descriptor. This value is written into the AAL5 trailer
for the packet.
packet-length field in Word 3 of the SOP Descriptor. This value is written into the AAL5 trailer
for the packet.
The Transmit CPPI Completion Pointer (TCPPICOMPPTR) is shown in
and described in
.
Figure 51. Transmit CPPI Completion Pointer (TCPPICOMPPTR)
31
16
DESC_ADDR
R/W-0
15
2
1
0
DESC_ADDR
Reserved
WRBK_MODE
R/W-0
R-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Universal Serial Bus (USB) Controller
104
SPRUGH3 – November 2008