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TNETX3270 数据表(PDF) 12 Page - Texas Instruments

部件名 TNETX3270
功能描述  ThunderSWITCHE 24/3 ETHERNETE SWITCH WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS
PDF  66 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TNETX3270 数据表(HTML) 12 Page - Texas Instruments

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TNETX3270
ThunderSWITCH
™ 24/3 ETHERNET™ SWITCH
WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS
SPWS043B – NOVEMBER 1997 – REVISED APRIL 1999
12
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
Terminal Functions (Continued)
miscellaneous
TERMINAL
I/O
INTERNAL
DESCRIPTION
NAME
NO.
I/O
RESISTOR
DESCRIPTION
OSCIN
112
I
None
Master system clock input (83.33-MHz input clock)
RESET
115
I
None
Reset. RESET is synchronous and, therefore, the system clock must be operational during reset.
power interface
TERMINAL
INTERNAL
DESCRIPTION
NAME
NO.
RESISTOR
DESCRIPTION
GND
8, 14, 34, 40, 55, 68, 74, 81, 88, 94, 100,
128, 134, 141, 148, 154, 160, 175, 188,
194, 201, 208, 214, 220, 235
None
Ground. GND is the 0-V reference for the device. All GND
terminals must be connected.
VDD(3.3V)
12, 72, 109, 122, 132, 163, 169, 192, 229
None
3.3-V supply voltage. Power for the input, output, and I/O
terminals.
VDD(2.5V)
4, 17, 31, 45, 58, 64, 77, 91,
105, 118, 124, 137, 151, 165, 178,
184, 197, 211, 225, 238
None
2.5-V supply voltage. Power for the core.
summary of signal terminals by signal group function
PORT DESCRIPTION
NUMBER OF
SIGNALS
MULTIPLIER
TOTAL
LED
2
1
2
10-Mbit/s port
16
3
48
10-/100-Mbit/s port
19
3
57
DIO
17
1
17
EEPROM interface
2
1
2
DRAM interface
50
1
50
Miscellaneous
2
1
2
JTAG
5
1
5
Serial MII management
3
1
3
Total signals
186
SUMMARY
Assigned terminals
186
VDD(3.3V)
9
VDD(2.5V)
20
GND
25
Total terminals
240



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