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TNETX3100 数据表(PDF) 11 Page - Texas Instruments

部件名 TNETX3100
功能描述  ThunderSWITCHE 10-PORT 10-/100-MBIT/S ETHERNETE SWITCH
PDF  80 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TNETX3100 数据表(HTML) 11 Page - Texas Instruments

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TNETX3100
ThunderSWITCH™ 10-PORT 10-/100-MBIT/S ETHERNET™ SWITCH
SPWS031D – JUNE 1997 – REVISED OCTOBER 1997
11
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
Terminal Functions (Continued)
EEPROM interface
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
ECLK
153
O
EEPROM data clock. ECLK is the serial EEPROM clock and requires an external pullup resistor.
EDIO
152
I/O
EEPROM data input/output. EDIO is the serial EEPROM data I/O signal that requires an external pullup (see
EEPROM data sheet) for EEPROM operation. Tying this terminal to ground disables the EEPROM interface
and prevents auto-configuration. Reset is asynchronous, therefore, OSCIN needs to operate while RESET
is active.
LED activity interface
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
LEDCLK
129
O
LED clock. LEDCLK is the serial-shift clock for the LED-status data.
LEDDATA
128
O
LED data. LEDDATA is the active-low serial data signal for the LED-status data.
LEDSTR
124
O
LED strobe. LEDSTR pulses latch the contents of the LED shift registers.
JTAG interface
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
TCLK
148
I
Test clock. TCLK clocks state information and test data into and out of the device during operation of the
test port.
TDI
149
I
Test data input. TDI serially shifts test data and test instructions into the device during operation of the test
port.
TDO
150
O
Test data out. TDO serially shifts test data and test instructions out of the device during operation of the test
port.
TMS
151
I
Test mode select. TMS controls the state of the TNETX3100 test-port controller.
TRST
147
I
Test reset. TRST asynchronously resets the test-port controller.
miscellaneous functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
DREF
125
O
DRAM reference clock.
OSCIN
127
I
Oscillator input. OSCIN is the TNETX3100 clock input (50 MHz).
RESET
146
I
Reset. RESET (active low) resets the TNETX3100. RESET should be held low for 25 ms after the power
supplies and clocks have stabilized. This input is synchronous and therefore, the system clock is operational
during reset.



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