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TNETE2004 Datasheet(PDF) 8 Page - Texas Instruments |
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TNETE2004 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 47 page TNETE2004 MDIO-MANAGED QuadPHY FOUR 10BASE-T PHYSICAL-LAYER INTERFACES SPWS023D – OCTOBER 1996 – REVISED OCTOBER 1997 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions (Continued) LED interface TERMINAL † NAME NO. I/O† DESCRIPTION NAME 120 128 LED0ACTIVE LED1ACTIVE LED2ACTIVE LED3ACTIVE 105 108 111 114 115 118 121 124 O LED activity indicator. The LED activity indicator is driven low for 20 ms when PHY0–PHY3 receives or transmits. LED0ACTIVE–LED3ACTIVE can sink a 10-mA current. If it receives or transmits another packet during that 20 ms, the LED does not flash, but stays on. Therefore, if packets are received or transmitted at intervals faster than 20 ms, the LED stays on continuously. LED0DUPCOL LED1DUPCOL LED2DUPCOL LED3DUPCOL 106 109 112 116 116 119 122 126 O LED duplex/collision indicator for PHY0–PHY3. This LED status pin has different meaning when in full- or half-duplex mode. In full-duplex mode, LED0DUPCOL–LED3DUPCOL is continuously driven low. In half-duplex mode, it is driven low for 20 ms after a collision. LED0DUPCOL–LED3DUPCOL can sink a 10-mA current. LED0LINK LED1LINK LED2LINK LED3LINK 103 107 110 113 113 117 120 123 O LED link indicator. The LED link indicator is driven low when PHY0–PHY3 has established a valid link. LED0LINK–LED3LINK can sink a 10-mA current. † O = output 10BASE-T interface TERMINAL ‡ NAME NO. TYPE‡ DESCRIPTION NAME 120 128 XMTN0 XMTN1 XMTN2 XMTN3 8 18 67 77 11 23 74 86 A Transmit pair Differential line transmitter outputs from PHY0 PHY3 XMTP0 XMTP1 XMTP2 XMTP3 9 19 68 78 12 24 75 87 A Transmit pair. Differential line-transmitter outputs from PHY0–PHY3. RCVN0 RCVN1 RCVN2 RCVN3 12 22 71 81 16 28 79 91 A Receive pair for PHY0–PHY3. Differential line-receiver inputs connect to receive pair through RCVP0 RCVP1 RCVP2 RCVP3 13 23 72 82 17 29 80 92 A g transformer isolation. ‡ A = analog |
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