Split (Full-Speed) Isochronous Transfer Descriptor.
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#include <ehci.h>
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ehci_link_t | next |
| | Word 0: Next Link Pointer.
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| uint32_t | device_address: 7 |
| | Word 1: siTD Endpoint Characteristics. More...
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uint32_t | __pad0__: 1 |
| | reserved
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uint32_t | endpoint_number: 4 |
| | This 4-bit field selects the particular endpoint number on the device serving as the data source or sink.
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uint32_t | __pad1__: 4 |
| | This field is reserved and should be set to zero.
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uint32_t | hub_address: 7 |
| | This field holds the device address of the transaction translators’ hub.
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uint32_t | __pad2__: 1 |
| | reserved
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uint32_t | port_number: 7 |
| | This field is the port number of the recipient transaction translator.
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uint32_t | direction: 1 |
| | 0 = OUT; 1 = IN. This field encodes whether the full-speed transaction should be an IN or OUT.
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uint32_t | __pad3__: 0 |
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| uint8_t | interrupt_smask |
| | Word 2: Micro-frame Schedule Control. More...
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uint8_t | non_hs_interrupt_cmask |
| | This field (along with the Activeand SplitX-statefields in the Statusbyte) are used to determine during which micro-frames the host controller should execute start-split transactions.
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uint16_t | reserved |
| | reserved
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| volatile | uint32_t: 1 |
| | Word 3: siTD Transfer Status and Control. More...
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volatile uint32_t | split_state: 1 |
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volatile uint32_t | missed_uframe: 1 |
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volatile uint32_t | xact_err: 1 |
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volatile uint32_t | babble_err: 1 |
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volatile uint32_t | buffer_err: 1 |
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volatile uint32_t | error: 1 |
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volatile uint32_t | active: 1 |
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volatile uint32_t | cmask_progress: 8 |
| | This field is used by the host controller to record which split-completes have been executed. See Section 4.12.3.3.2 for behavioral requirements.
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volatile uint32_t | total_bytes: 10 |
| | This field is initialized by software to the total number of bytes expected in this transfer. Maximum value is 1023.
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volatile uint32_t | page_select: 1 |
| | Used to indicate which data page pointer should be concatenated with the CurrentOffsetfield to construct a data buffer pointer.
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uint32_t | int_on_complete: 1 |
| | Do not interrupt when transaction is complete. 1 = Do interrupt when transaction is complete.
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uint32_t | __pad4__: 0 |
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uint32_t | buffer [2] |
| | Word 4-5: Buffer Pointer List.
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ehci_link_t | back |
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uint8_t | used |
| | SITD is 32-byte aligned but occupies only 28 –> 4 bytes for storing extra data.
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uint8_t | ihd_idx |
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uint8_t | reserved2 [2] |
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Split (Full-Speed) Isochronous Transfer Descriptor.
Definition at line 240 of file ehci.h.
Word 1: siTD Endpoint Characteristics.
This field selects the specific device serving as the data source or sink.
Definition at line 245 of file ehci.h.
Word 2: Micro-frame Schedule Control.
This field (along with the Activeand SplitX-statefields in the Statusbyte) are used to determine during which micro-frames the host controller should execute complete-split transactions
Definition at line 257 of file ehci.h.
Word 3: siTD Transfer Status and Control.
reserved
Definition at line 264 of file ehci.h.
The documentation for this struct was generated from the following file:
1.8.6 
