Information

126 | Signal Chain Guide 2013 Texas Instruments
Interface
Industrial – Ethernet PHY
Get more information: www.ti.com/product/TLK105,
www.ti.com/product/TLK106
Industrial Temp, Single Port 10/100 Mbs Ethernet PHY
TLK105/6
The TLK10x is a single-port Ethernet PHY for 10 Base-T and 100 Base TX signal-
ing, integrating all the physical-layer functions needed to transmit and receive data on
standar
d twisted-pair cables. The device supports the standard Media Independent
Interface (MII) and Reduced Media Independent Interface (RMII) for direct connection to
a Media Access Controller (MAC).
The device is designed for power-supply flexibility, and can operate with a single
3.3 V power supply or with combinations of 3.3 V and 1.55 V power supplies for
r
educed power operation. The TLK10x not only meets the requirements of IEEE 802.3,
but maintains high margins in terms of cross-talk and alien noise.
TLK105/6 functional block diagram
Key Features
• Lowpowerconsumption:
< 205 mW PHY and 275 mW with
center
tap (typical)
• Cablediagnostics(TLK106)
• Programmablefastlinkdownmodes,
<
10µsreactiontime
• FixedTXclocktoXI,with
programmable phase shift
•
3.3VMACinterface
• Auto-MDIXfor10/100Mbs
• Energydetectionmode
• MIIandRMIIinterfaces
• Serialmanagementinterface
Applications
• Industrialnetworksandfactory
automation
•
Motorandmotioncontrol
• Generalembeddedapplications
MII Option
Serial
Management
Serial
Management
TX_CLK TXD[3:0]
RMII Option
MII/RMII Interface
TX_EN MDIO MDC COL CRS/CRS_DV RX_ER RX_DV RX_CLK RXD[3:0]
TX_EN
TX_DATA
DAC ADC
LED
Driver
Clock
Generation
Receive
Block
Transmit
Block
10BASE-T
and
100BASE-TX
10BASE-T
and
100BASE-TX
Auto-Negotiation
State Machine
MII
Registers
LEDReference Clock
TD± RD±
Auto-MDIX
BIST
Cable
Diagnostics
(TLK106 only)
RX_DATA
TX_CLK
RX_CLK
TXD[1:0] CRS/RX_DV RX_ER RX_DV
(optional)
RXD[1:01] MDIO MDC