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TLK111PT Datasheet(PDF) 6 Page - Texas Instruments |
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TLK111PT Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 109 page  TLK111 SLLSEF8A – AUGUST 2013 – REVISED NOVEMBER 2013 www.ti.com 2.4 10Mbs and 100Mbs PMD Interface PIN TYPE DESCRIPTION NAME NO. Differential common driver transmit output (PMD Output Pair): These differential outputs are automatically configured to either 10Base-T or 100Base-TX signaling. TD–, TD+ 16, 17 I/O In Auto-MDIX mode of operation, this pair can be used as the Receive Input pair. These pins require 3.3V bias for operation. Differential receive input (PMD Input Pair): These differential inputs are automatically configured to accept either 100Base-TX or 10Base-T signaling. RD–, RD+ 13, 14 I/O In Auto-MDIX mode of operation, this pair can be used as the Transmit Output pair. These pins require 3.3V bias for operation. 2.5 Clock Interface PIN TYPE DESCRIPTION NAME NO. CRYSTAL/OSCILLATOR INPUT: MII reference clock: Reference clock. 25MHz ±50ppm-tolerance crystal reference or oscillator input. The device supports either an external crystal resonator connected across pins XI and XO, or an external XI 34 I CMOS-level oscillator source connected to pin XI only. RMII reference clock: Primary clock reference input for the RMII mode. The input must be connected to a 50MHz ±50ppm-tolerance CMOS-level oscillator source. CRYSTAL OUTPUT: Reference Clock output. XO pin is used for crystal only. This pin should be left floating XO 33 O when an oscillator input is connected to XI. CLOCK OUTPUT: In MII mode, this pin provides a 25 MHz clock output to the system. In RMII mode, this CLKOUT 25 O pin provides a 50MHz clock output. This feature allows other devices to use the reference clock from the TLK111 without requiring additional clock sources. 2.6 LED Interface (See Table 3-3 for LED Mode Selection) PIN TYPE DESCRIPTION NAME NO. LED Pin to indicate status Mode 1 LINK Indication LED: Indicates the status of the link. When the link is good, the LED LED_LINK / is ON. 28 S, O, PU AN_0 Mode 2 and ACT indication LED: Indicates transmit and receive activity in addition to the status Mode 3 of the Link. The LED is ON when Link is good. The LED blinks when the transmitter or receiver is active. LED_SPEED / LED Pin to indicate the speed of the link. SPEED Indication LED indicates whether the link is 27 S, O, PU SD_IN / AN_1 100Mb/s or 10Mb/s. The LED is ON when the link speed is 100Mbs and OFF when it is 10Mbs. LED Pin to indicate status. Mode 1 ACT indication LED: Indicates if there is any activity on the link. The LED is ON LED_ACT / (pulse) when activity is present on either Transmit or Receive channel. 26 S, O, PU AN_EN Mode 2 COL indication LED: Indicates collision detection. Mode 3 may be programmed to DUPLEX Indication LED and indicates Full-duplex status. 2.7 JTAG Interface PIN TYPE DESCRIPTION NAME NO. JTAG_TCK 8 I, PU JTAG Test Clock: This pin has a weak internal pullup. JTAG_TDI 12 I, PU JTAG Test Data Input: This pin has a weak internal pullup. JTAG_TDO 9 O JTAG Test Data Output 6 Pin Descriptions Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: TLK111 |
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