參數資料
型號: MD8412B
廠商: Electronic Theatre Controls, Inc.
英文描述: LINK(IEEE 1394)
中文描述: 鏈接(1394)
文件頁數: 62/114頁
文件大?。?/td> 577K
代理商: MD8412B
MD8412B
50
FUJIFUILM MICRODEVICES CO., LTD.
Ver 1.10
4-6
PHY Control Packet
4-6-1
PHY Control Packet Transmit
To send a PHY control packet, the first quadlet of data shown in Table 4-5-4 is saved in the ATF buffer, and the PHY Con-
trol Packet specified by 1394 is then saved. In this case, it is necessary to save the PHY Control Packet data together with the
reversal data.
In actual transmission, the first quadlet is not sent and the PHY Control packet only is sent. Refer to the Draft regarding
details.
4-6-2
PHY Control Packet Receive
When PHY control packet is received, the data which shows it to original Quadlet in the table 4-6-1 is stored in the ARF
buffer. The PHY Control Packet established with 1394 after that is stored. At this time, the invert data of PHY Control
Packet isn’t stored in the ARF buffer.
And, when the PHY received PingPacket has more than 4Port, that SelfID Packet isn’t stored in the ARF buffer.
And, that PHY Control Packet isn’t stored in the ARF buffer when the invert data of the PHY Control Packet is different.
Refer to the Draft regarding details.
4-7
Code
The codes used for packet formatting specified by 1394 are shown. Refer to the 1394 Draft for details of each code.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
1110b
Table 4-6-1 PHY control packet format (first quadlet)
Code
Name
00b
retry_1
01b
retry_X
10b
retry_A
11b
retry_B
Table 4-7-1 List of Retry code
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