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Table 48. Transmit CPPI DMA State Word 2 (TCPPIDMASTATEW2) Field Descriptions (continued)
Bit | Field | Value | Description |
0 | Reserved | 0 | Reserved |
4.33 Transmit CPPI DMA State Word 3 (TCPPIDMASTATEW3)
The Transmit CPPI DMA State Word 3 (TCPPIDMASTATEW3) is shown in Figure 48 and described in Table 49.
Figure 48. Transmit CPPI DMA State Word 3 (TCPPIDMASTATEW3)
31 | 0 |
CURR_BUFFER_PTR
LEGEND: R/W = Read/Write;
Table 49. Transmit CPPI DMA State Word 3 (TCPPIDMASTATEW3) Field Descriptions
Bit | Field | Value | Description |
CURR_BUFFER_PTR | Current Buffer Pointer | ||
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| transmitted |
4.34 Transmit CPPI DMA State Word 4 (TCPPIDMASTATEW4)
The Transmit CPPI DMA State Word 4 (TCPPIDMASTATEW4) is shown in Figure 49 and described in Table 50.
Figure 49. Transmit CPPI DMA State Word 4 (TCPPIDMASTATEW4)
31 | 24 | 23 | 18 | 17 | 16 |
DESC_MSG |
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| Reserved | CURR_BUFFER_EOP | CURR_BUFFER_SOP |
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15 |
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| 0 |
CURR_BUFFER_LENGTH
LEGEND: R/W = Read/Write; R = Read only;
Table 50. Transmit CPPI DMA State Word 4 (TCPPIDMASTATEW4) Field Descriptions
Bit | Field | Value | Description |
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DESC_MSG | Descriptor Message |
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| Byte which is passed from the SOP Tx Descriptor to the SOP Receive |
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| descriptor. Used to tag packets. |
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Reserved | 0 | Reserved |
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17 | CURR_BUFFER_EOP | Current Buffer is EOP |
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| Flag indicating whether or not the current buffer that is being transmitted from is | |
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| the end of packet buffer |
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16 | CURR_BUFFER_SOP | Current Buffer is SOP |
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| Flag indicating whether or not the current buffer that is being transmitted from is | |
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| the start of packet buffer |
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| Universal Serial Bus (USB) Controller | 103 | ||
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