TLK1501_12 Datasheet, PDF (2/32 Pages) Texas Instruments – 0.6 TO 1.5 GBPS TRANSCEIVER

TLK1501
0.6 TO 1.5 GBPS TRANSCEIVER
SLLS428F − JUNE 2000 − REVISED JANUARY 2004
description (continued)
The TLK1501 provides an internal loopback capability for self-test purposes. Serial data from the serializer is
passed directly to the deserializer, allowing the protocol device a functional self-check of the physical interface.
The TLK1501 is designed to be hot plug capable. An on-chip power-on reset circuit holds the RX_CLK low
during power up. This circuit also holds the parallel side output signal terminals during power up as well as
DOUTTXP and DOUTTXN in a high-impedance state.
The TLK1501 has a loss of signal detection circuit for conditions where the incoming signal no longer has a
sufficient voltage amplitude to keep the clock recovery circuit in lock.
To prevent a data bit error from causing a valid data packet from being interpreted as a comma and thus causing
the erroneous word alignment by the comma detection circuit, the comma word alignment circuit is turned off
after the link is properly established in TLK1501.
The TLK1501 allows users to implement redundant ports by connecting receive data bus terminals from two
TLK1501 devices together. Asserting the LCKREFN to a low state causes the receive data bus terminals,
RXD[0:15], RX_CLK and RX_ER, RX_DV/LOS to go to a high-impedance state. This places the device in a
transmit-only mode, since the receiver is not tracking the data.
The TLK1501 uses a 2.5-V supply. The I/O section is 3 V compatible. With the 2.5-V supply the chipset is very
power-efficient, consuming less than 360 mW typically. The TLK1501 is characterized for operation from −40°C
to 85°C.
AVAILABLE OPTIONS
PACKAGE
TA
PowerPAD QUAD FLATPACK
(PQFP)
−40°C to 85°C
TLK1501IRCP
TLK1501IRCPR
2
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