參數(shù)資料
型號(hào)： UPD72850AGK-9EU
廠商： NEC Corp.
元件分類： 圓形連接器
英文描述： Circular Connector; No. of Contacts:56; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-4 RoHS Compliant: No
中文描述： IEEE1394連接400Mbps的物理層
文件頁數(shù)： 35/48頁
文件大?。?/td> 290K
代理商： UPD72850AGK-9EU
Data Sheet S14452EJ1V0DS00
35
μ
PD72850A
5.4.1 Ping Packet
When the
μ
PD72850A receives the Ping packet, it will transmit the Self_ID packet within the RESPONSE_TIME.
Figure 5-4. Ping Packet Format
00
phy_ID
00
type (0)
00
0000
0000
0000
0000
Logical Inverse of the first quadlet
Table 5-4. Ping Packet
Field
Description
phy_ID
Physical ID of the destination node of the Ping packet
type
Indicates that there is a Ping packet with a value of 0
5.4.2 Remote Access Packet
The Remote access packet reads information in the PHY register of another node. The PHY specified by the
Remote access packet transmits the value in the register using the Remote Reply packet.
Figure 5-5. Remote Access Packet Format
00
phy_ID
00
type
page
port
reg
reserved
Logical Inverse of the first quadlet
Table 5-5. Remote Access Packet
Field
Description
phy_ID
Physical ID of the destination node of the Remote access packet
type
1 = read register (base register), 5 = read register (page register)
page
Specifies the page of the PHY register
port
Specifies the register of each port in the PHY register
reg
Specifies the address when reading the base register.
In case of the Page and port registers, specifies the address with 1000+reg.
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