|
Table 4: Asynchronous packet descriptions
|
| Name
|
Description
|
| Destination_ID
|
The concatenation of the Bus and Node address of the intended
node. All ones indicate a broadcast transmission.
|
| TL
|
Transaction Label specified by the requesting node.This value is
also used in the response packet.
|
| RT
|
Retry Code that defines whether this is a retry and what retry
mechanism is being used.
|
| TCODE
|
Transaction Code defines the type of transaction (Read request,
read response, Acknowledge, and so forth).
|
| PRI
|
Priority—used only in backplane environments
|
| Source_ID
|
Specifies Bus and Node that generated this packet.
|
| Destination_Offset
|
The address location within the destination node that is being
accessed.
|
| Packet type Specific Data
|
Can indicate data length for block reads and writes, or contain
|
| Header_CRC
|
CRC Value for the Data
|
| Optional Data
|
Quadlet aligned data specific to the type of the packet.
|
| Optional Data CRC
|
CRC for the Optional Data
|
