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TNETX3110 数据表(PDF) 12 Page - Texas Instruments |
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TNETX3110 数据表(HTML) 12 Page - Texas Instruments |
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12 / 65 page ![]() TNETX3110 ThunderSWITCH ™ 8/3 ETHERNET™ SWITCH WITH 8 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS SPWS047A – MARCH 1998 – 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 NC 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 213, 215, 216, 217, 218, 219, 221, 222, 223, 224, 226, 227, 228, 230, 231, 232, 233, 234, 236, 237, 239, 240 Pullup/ Pulldown No connect. All NCs have internal pullups or pulldowns so that they can be left open. 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 16 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 154 SUMMARY Assigned terminals 154 NC 32 VDD(3.3V) 9 VDD(2.5V) 20 GND 25 Total terminals 240 |
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