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TNETX4080 Datasheet(PDF) 57 Page - Texas Instruments

Part # TNETX4080
Description  ThunderSWITCH IIE 8-PORT 10-/100-MBIT/S ETHERNETE SWITCH
PDF  64 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TNETX4080 Datasheet(HTML) 57 Page - Texas Instruments

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TNETX4080
ThunderSWITCH II™ 8-PORT 10-/100-MBIT/S ETHERNET™ SWITCH
SPWS050A – AUGUST 1998 – REVISED NOVEMBER 1998
57
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
EEPROM interface
For further information on EEPROM interface timing, refer to the 24C02 or 24C08 serial EEPROM data sheets.
EEPROM writes (see Figure 17)
NO.
MIN
MAX
UNIT
1
tsu(EDIO:Start)
Setup time, ECLK high before EDIO
↓
383
tc
2
th(EDIO:Start)
Hold time, ECLK high after EDIO
↓
383
tc
3
th(EDIO:Data)
Hold time, data after ECLK
↓
0
tc
4
tsu(EDIO:Data)
Setup time, data before ECLK
↑
383
tc
5
tw(ECLK)
Pulse duration, ECLK low during start/stop
766
tc
6
tw(ECLK)
Pulse duration, ECLK high during start/stop
766
tc
7
tw(ECLK:Data)
Pulse duration, ECLK high during data
383
tc
8
tw(ECLK:Data)
Pulse duration, ECLK low during data
766
tc
9
fclock(ECLK)
Clock frequency, ECLK
98
kHz
EDIO (out)
7
8
4
2
1
3
5
6
ECLK
Figure 17. EEPROM Writes
EEPROM reads (see Figure 18)
NO.
MIN
MAX
UNIT
1
tsu(EDIO)
Setup time, EDIO (in) before ECLK
↑
10
ns
2
th(EDIO)
Hold time, EDIO (in) after ECLK
↓
0
ns
ECLK
1
2
EDIO (in)
Figure 18. EEPROM Reads



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