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TNETX3150 数据表(PDF) 16 Page - Texas Instruments |
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TNETX3150 数据表(HTML) 16 Page - Texas Instruments |
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16 / 113 page ![]() TNETX3150/TNETX3150A ThunderSWITCH™ 15-PORT 10-/100-MBIT/S ETHERNET™ SWITCH SPWS027F – FEBRUARY 1997 – REVISED SEPTEMBER 1997 16 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions (Continued) JTAG interface TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION TCLK AF19 I Test clock. TCLK is used to clock state information and test data into and out of the device during operation of the test port. TDI AD18 I Test data input. TDI is used to serially shift test data and test instructions into the device during operation of the test port. TDO AE19 O Test data out. TDO is used to serially shift test data and test instructions out of the device during operation of the test port. TMS AD19 I Test mode select. TMS is used to control the state of the test-port controller within the TNETX3150/TNETX3150A. TRST AC19 I Test reset. TRST is asynchronous reset of the test-port controller. miscellaneous functions TERMINAL I/O DESCRIPTION NAME NO. I/O DESCRIPTION DREF U23 O DRAM reference. DREF is the DRAM reference clock. NC V24 No connection. OSCIN AC12 I Oscillator input. OSCIN is the TNETX3150/TNETX3150A clock input (50 MHz). RESET U26 I Reset. RESET (active low) resets the TNETX3150/TNETX3150A. 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 must be operational during reset. power interface TERMINAL DESCRIPTION NAME NO. DESCRIPTION GND A1, A2, A13, A14, A25, A26, AD2, AD25, AE1, AE3, AE24, AE26, AF1, AF2, AF13, AF14, AF25, AF26, B1, B3, B24, B26, C2, C25, N1, N26, P1, P26 Ground. GND is the 0-V reference for the device. VCC AC4, AC9, AC13, AC18, AC23, AD3, AD24, AE2, AE25, B2, B25, C3, C24, D4, D9, D14, D18, D23, J4, J23, N4, V4, V23, P23 Supply voltage. VCC = 3.3 ± 0.3 V VCC(5V) AB2, AB25, AE5, AE9, AE14, AE18, AE22, B5, B9, B13, B18, B22, E2, E25, J2, J25, N25, P2, V2, V25 Supply voltage. VCC(5V) = 5 ± 0.5 V. VCC(5V) is for the I/O periphery only and is used for the 5-V tolerant pads only. |
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