Datasheet

Pin 9
(RD–)
RD –
Pin 10
(RD+)
RD +
49.9W
3.3V
Supply
0.1 Fm
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 Fμ
Pin 21
(VDD33_IO)
3.3V
Supply
0.1 Fμ
49.9W
0.1 F*m
0.1 F*m
49.9W
0.1 Fμ
0.1 Fμ
3.3V
Supply
3.3V
Supply
10 Fm10nF1nF100pF
10 Fm 10nF 1nF 100pF
1 Fm
1 Fm
1 Fm
0.1 F*m
1 Fm
TLK105
TLK106
SLLSEB8A –AUGUST 2012–REVISED MARCH 2013 www.ti.com
PIN TYPE
NAME NO. DESCRIPTION
This option sets the Auto-MDIX mode. By default, it enables Auto-MDIX. An external pull-
AMDIX_EN (RX_ER) 28 S, O, PU
down resistor disables Auto-MDIX mode.
MII Mode Select: This option selects the operating mode of the MAC data interface. This
MII_MODE (RX_DV) 26 S, O, PD 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 the TLK10x supply pins should be connected as shown in Figure 3-1.
Figure 3-1. Power Connections for Single Supply Operation
8 Hardware Configuration Copyright © 2012–2013, Texas Instruments Incorporated
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