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| TLK105_16 Datasheet, PDF (18/104 Pages) Texas Instruments – TLK105 TLK106 Industrial Temp, Single Port 10/100Mbs Ethernet Physical Layer | |||
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TLK105
TLK106
SLLSEB8C â AUGUST 2012 â REVISED APRIL 2016
www.ti.com
4.2 Reduced Media Independent Interface (RMII)
TLK10x incorporates the Reduced Media Independent Interface (RMII) as specified in the RMII
specification (rev1.2) from the RMII consortium. The purpose of this interface is to provide a low cost
alternative to the IEEE 802.3u MII as specified in Clause 22. Architecturally, the RMII specification
provides an additional reconciliation layer on either side of the MII, but can be implemented in the absence
of an MII.
The RMII specification has the following characteristics:
⢠Supports 10Mbs and 100Mbs data rates
⢠Single clock reference sourced from the MAC to PHY (or from an external source)
⢠Provides independent 2 bit wide (di-bit) transmit and receive data paths
⢠Uses CMOS signal levels, operates at 3.3V or 2.5V VDD_IO levels
18
Interfaces
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