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TLK105 Datasheet(PDF) 8 Page - Texas Instruments |
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TLK105 Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 104 page  Pin 9 (RD–) RD – Pin 10 (RD+) RD + 49.9W 3.3V Supply 0.1 F m Pin 11 (TD–) TD – Pin 12 (TD+) TD + 49.9W 1:1 1:1 T1 RJ45 Pin 14 (AVDD33) Pin 15 (PFBOUT) Pin 13 (PFBIN1) Pin 24 (PFBIN2) 3.3V Supply 10 F Pin 21 (VDD_IO) 3.3V Supply 0.1 F 49.9W 0.1 F* m 0.1 F* m 49.9W 0.1 F 0.1 F 3.3V Supply 3.3V Supply 10 F m 10nF 1nF 100pF 10 F m 10nF 1nF 100pF 1 F m 1 F m 1 F m 1 F m Copyright © 2016, Texas Instruments Incorporated 8 TLK105 TLK106 SLLSEB8C – AUGUST 2012 – REVISED APRIL 2016 www.ti.com Submit Documentation Feedback Product Folder Links: TLK105 TLK106 Hardware Configuration Copyright © 2012–2016, Texas Instruments Incorporated Table 3-1. Strap Options (continued) PIN TYPE NAME NO. DESCRIPTION LED_CFG (CRS) 27 S, O, PU LED Configuration: This option selects the operation mode of the LED LINK pin. Default is Mode 1. All modes are also configurable via register access. See PHY Control Register (PHYCR), Address 0x0019. AMDIX_EN (RX_ER) 28 S, O, PU Auto-MDIX Enable: This option sets the Auto-MDIX mode. By default, it enables Auto- MDIX. An external pull-down resistor disables Auto-MDIX mode. MII_MODE (RX_DV) 26 S, O, PD MII Mode Select: This option selects the operating mode of the MAC data interface. This pin has a weak internal pull-down, and it defaults to normal MII operation mode. An external pull-up causes the device to operate in RMII mode. 3.2 Power Supply Configuration The TLK10x provides best-in-class flexibility of power supplies. 3.2.1 Single Supply Operation If a single 3.3V power supply is desired, the TLK10x internal regulator provides the necessary core supply voltages. Ceramic capacitors of 10µf and 0.1µf should be placed close to the PFBOUT (pin 15) which is the output of the internal regulator. The PFBOUT pin should be connected to the PFBIN1 and PFBIN2 on the board. A small capacitor of 0.1µF should be placed close to the PFBIN1 (pin 13) and PFBIN2 (pin 24). To operate in this mode, connect the TLK10x supply pins as shown in Figure 3-1. Figure 3-1. Power Connections for Single Supply Operation |
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