TLK2711

1.6 TO 2.7 GBPS TRANSCEIVER

SLLS501 – SEPTEMBER 2001

2

POST OFFICE BOX 655303

description (continued)

The TLK2711 has a loss of signal (LOS) detection circuit for conditions where the incoming signal no longer has

a sufficient voltage amplitude to keep the clock recovery circuit in lock.

The TLK2711 allows users to implement redundant ports by connecting receive data bus terminals from two

TLK2711 devices together. Asserting the LCKREFN to a low state will cause the receive data bus terminals,

RXD[0:15], RXCLK, RKLSB, and RKMSB 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 TLK2711 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 450 mW typically. The TLK2711 is characterized for operation from –40

°C

to 85

°C (RCP only).

The TLK2711 is designed to be hot-plug capable. An on-chip power-on reset circuit holds the RXCLK low and

goes to high impedance on the parallel side output signal terminals as well as TXP and TXN during power up.