參數(shù)資料
型號(hào): TSB12LV01BPZ
英文描述: FPGA (Field-Programmable Gate Array)
中文描述: 總線控制器
文件頁數(shù): 88/106頁
文件大小: 605K
代理商: TSB12LV01BPZ
7
10
3
2
1
0
7
6
5
4
11
10
9
8
15
14
13
12
19
18
20 21
31
30
29
28
27
26
25
24
23
22
0
0
Number of quadlets
ackCode
0
0
0
0
spd
0
0
Phy Configuration Quadlet
0
0
0
17
16
Logical inverse of the Phy Configuration Quadlet
Figure 7
12. Received Phy Configuration Packet Format
Table 7
8. Receive Phy
Configuration Packet
FIELD NAME
DESCRIPTION
numofQuadlets
Total number of quadlets in the packet. This field is equal to 2 in this case.
ackCode
This 5
bit field holds the acknowledge code sent by the receiver for the current
packet. In this case, the ackCode is equal to 1 (ack_complete)
spd
The spd field indicates the speed at which the current packet was sent. In this
case, the spd field is equal to
00
(S100)
7.3.1
7.3.1.1
The reception of a Phy ping packet causes the node identified by Phy_ID to transmit Self-ID packet(s) that
reflect the current configuration and status of the Phy. The ping packet provides a method of measuring the
round-trip delay of packets between two nodes on the bus that are farthest from one another in terms of cable
hops. The format of this packet is shown in Figure 7
13 and described in Table 7
9.
transmitted first
Extended Phy Packets
Ping Packets
0
0
Phy_ID
0
0
type (0)
0
0
0
0
0
0
0
0
Logical inverse of the first quadlet
transmitted last
0
0
0
0
0
0
0
0
0
0
Figure 7
13. Ping Packet Format
Table 7
9. Ping Packet Fields
FIELD NAME
DESCRIPTION
Phy_ID
Physical node identifier of the destination of this packet
type
Extended Phy packet type (zero identifies ping packet)
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