參數(shù)資料
型號(hào): E-110
廠商: LSI Corporation
英文描述: 100BASE-T Fast Ethernet Core(100BASE-T快速以太網(wǎng)處理芯片 Fast Ethernet Core)
中文描述: 100兆- T的快速以太網(wǎng)核心(100兆- T的快速以太網(wǎng)處理芯片快速以太網(wǎng)核心)
文件頁數(shù): 101/130頁
文件大小: 770K
代理商: E-110
MAC Functional Timing
4-5
Figure 4.3
E-110 MAC Transmit Packet Timing
4.1.2.1 Start of Transmission
When the MAC is ready to begin a packet transmission, it asserts the
MTXEN signal to the PHY to indicate that the MAC is presenting nibbles
on the MII for transmission.
4.1.2.2 Preamble
In the example shown in Figure 4.3, the MAC begins sending the
preamble to the PHY. The preamble consists of the value 0x5 on the
MTXC
0
5
D
F
0
0
MTXEN
MTXD[3:0]
TPUD
TPSF
TPEF
6
4
TPD[7:0]
9
A
8
3
4
0
1
1
0
FCS
A9
38
04
00
10
00
01
64
FF
CB
TSVP_L
TSV[30:0]
TPDN
MTXER
TPAB
TPRT
TPUR
TRST_L
Valid
1
1. Transmit status vector valid.
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