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LAN8741Ai-EN Scheda tecnica(PDF) 90 Page - Microchip Technology

Il numero della parte LAN8741Ai-EN
Spiegazioni elettronici  Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR짰 Technology
PDF  106 Pages
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Produttore elettronici  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8741Ai-EN Scheda tecnica(HTML) 90 Page - Microchip Technology

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LAN8741A/LAN8741Ai
DS00001988A-page 90
2013-2015 Microchip Technology Inc.
Note 1: 40 ns for 100BASE-TX operation, 400 ns for 10BASE-T operation.
2: Timing was designed for system load between 10 pF and 25 pF.
FIGURE 5-4:
MII TRANSMIT TIMING
TABLE 5-10:
MII TRANSMIT TIMING VALUES
Symbol
Description
Min.
Typ.
Max.
Unit
Note
tclkp
TXCLK period
(see Note 1)ns
tclkh
TXCLK high time
tclkp * 0.4
tclkp * 0.6
ns
tclkl
TXCLK low time
tclkp * 0.4
tclkp * 0.6
ns
tsu
TXD[3:0], TXEN, TXER setup time
to rising edge of TXCLK
12.0
ns
(see Note 2)
thold
TXD[3:0], TXEN, TXER hold time
after rising edge of TXCLK
0ns
(see Note 2)
t1
TXCLK rising edge after TXEN
assertion to RXDV assertion
(100 Mbps internal loopback
mode)
160
162
ns
(see Note 2)
tsu
tclkh
tclkl
tclkp
thold
tsu thold
thold
tsu
thold
TXCLK
(OUTPUT)
TXD[3:0]
(INPUTS)
TXEN, TXER
(INPUTS)



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