TLK3118 Datasheet, PDF (21/57 Pages) Texas Instruments – Redundant XAUI Transceiver

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TLK3118
Redundant XAUI Transceiver
SLLS628A – DECEMBER 2004 – REVISED APRIL 2005
An external loopback (requiring external connection) is also supported, which can be used with the PRBS
patterns, as well as the CJPAT, CRPAT, Mixed/High/Low Frequency tests.
XAUI−A
SERDES
SERDES
SERDES
XGMII
XAUI−B
SERDES
Figure 20. Data Loopback
XGMII Bus Buffers
The XGMII bus is implemented using 1.5-V HSTL buffer in compliance with JEDEC 1.5-V standard JESD8-6 with
VTP-controlled driver, receiver and an optional termination. The VTP macro function is to adjust the HSTL buffer
output impedance to match the external resistors. (In this case 50 Ω)
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