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TLK105 Datasheet(PDF) 9 Page - Texas Instruments

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Part # TLK105
Description  Industrial Temp, Single Port 10/100Mbs Ethernet Physical Layer Transceiver
PDF  99 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TLK105 Datasheet(HTML) 9 Page - Texas Instruments

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Pin 9
(RD–)
RD–
Pin 10
(RD+)
RD+
49.9 W
3.3V
Supply
Pin 11
(TD–)
TD–
Pin 12
(TD+)
TD+
1:1
T1
RJ45
Pin 14
(AVDD33)
Pin 15
(PFBOUT)
Pin 13
(PFBIN1)
Pin 24
(PFBIN2)
3.3V
Supply
Pin 21
(VDD33_IO)
Floating
49.9 W
49.9 W
49.9 W
1:1
3.3V
Supply
10 F
m
10nF
1nF
100pF
1.55V
Supply
10 F
m
10nF
1nF
100pF
10 F
m
10nF
1nF
100pF
0.1 F*
m
1 F
m
1 F
m
0.1 F
m
0.1 F
m
3.3V
Supply
3.3V
Supply
1 F
m
1 F
m
1.55V
Supply
10 F
m
10nF
1nF
100pF
TLK105
TLK106
www.ti.com
SLLSEB8A – AUGUST 2012 – REVISED MARCH 2013
3.2.2
Dual Supply Operation
When a 1.55V external power rail is available, the TLK10x can be configured as shown in Figure 3-2.
PFBOUT (pin 15) is left floating. The 1.55V external supply is connected to PFBIN1 (pin 13) and PFBIN2
(pin 24). Furthermore, to lower the power consumption, the internal regulator should be powered down by
writing ‘1’ to bit 15 of the VRCR register (0x00d0h).
Figure 3-2. Power Connections for Dual Supply Operation
When operating with dual supplies, follow these guidelines:
•
When powering up, ramp up the 3.3V supply before the 1.55V supply.
•
When powering down, turn off the 1.55V supply before turning off the 3.3V supply.
•
Use the external RESET pin after power up to reset the PHY.
•
To use the internal power-on reset, PFBIN1 and PBIN2 must be operational less than 100ms after
3.3V rises to detect the internal RESET.
3.3
IO Pins Hi-Z State During Reset
The following IO or output pins are in hi-Z state when RESET is active (Low).
Internal
Internal
Pin Name
Type
Pin Name
Type
PU/PD
PU/PD
TXD_3
IO
PD
COL
IO
PU
TX_EN
IO
PD
RXD_0
IO
PD
INT/PWDN
IO
PU
RXD_1
IO
PD
LED_LINK
IO
PU
RXD_2
IO
PD
MDIO
IO
RXD_3
IO
PD
RX_DV
IO
PD
TX_CLK
O
CRS
IO
PU
CLK25MHz_OUT
O
RX_ER
IO
PU
RX_CLK
O
Copyright © 2012–2013, Texas Instruments Incorporated
Hardware Configuration
9
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Product Folder Links: TLK105 TLK106



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