5.1 Physical Interface
5.1.2.2 Primitives descriptions
The following table contains the primitive mnemonics and a brief description of each.
Primitive | Name | Description |
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ALIGN | Physical layer control | Upon receipt of an ALIGN, the physical layer |
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| readjusts internal operations as necessary to |
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| perform its functions correctly. |
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EOF | End of frame | EOF marks the end of a frame. |
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PMACK | Power management | Sent in response to a PMREQ_S or |
| acknowledge | PMREQ_P when a receiving node is prepared |
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| to enter a power mode state. |
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|
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PMNAK | Power management | Sent in response to a PMREQ_S or |
| denial | PMREQ_P when a receiving node is not |
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| prepared to enter a power mode state or when |
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| power management is not supported. |
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|
PMREQ_P | Power management | This primitive is sent continuously until |
| request to partial | PMACK or PMNAK is received. When |
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| PMACK is received, current node (host or |
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| device) will stop PMREQ_P and enters the |
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| Partial power management state. |
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|
|
PMREQ_S | Power management | This primitive is sent continuously until |
| request to Slumber | PMACK or PMNAK is received. When |
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| PMACK is received, current node (host or |
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| device) will stop PMREQ_S and enters the |
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| Slumber power management state. |
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R_ERR | Reception error | Current node (host or device) detected error in |
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| received payload. |
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R_OK | Reception with no error | Current node (host or device) detected no |
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| error in received payload. |
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R_RDY | Receiver ready | Current node (host or device) is ready to |
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| receive payload. |
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SOF | Start of frame | Start of a frame. Payload and CRC follow to |
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| EOF. |
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SYNC | Synchronization | Synchronizing primitive - always idle. |
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X_RDY | Transmission data ready | Current node (host or device) has payload |
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| ready for transmission. |
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