TLK2701 Datasheet, PDF (2/21 Pages) Texas Instruments – 1.6 TO 2.7 GBPS TRANSCEIVER

TLK2701
1.6 TO 2.7 GBPS TRANSCEIVER
SLLS429B – AUGUST 2000 – REVISED MAY 2002
description (continued)
The TLK2701 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.
The TLK2701 allows users to implement redundant ports by connecting receive data bus terminals from two
TLK2701 devices together. Asserting the LCKREFN to a low state will cause the receive data bus terminals,
RXD[0:15], RX_CLK, and RKLSB, RKMSB/PRBS_PASS 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 TLK2701 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 350 mW typically. The TLK2701 is characterized for operation from –40°C
to 85°C.
The TLK2701 is designed to be hot plug capable. An on-chip power-on reset circuit holds the RX_CLK low and
goes to high impedance to the parallel side output signal terminals during power up as well as goes to DOUTTXP
and DOUTTXN.
AVAILABLE OPTIONS
PACKAGE
TA
PowerPAD QUAD FLATPACK
(VQFP)
– 40°C to 85°C
TLK2701IRCP
RCP PACKAGE
(TOP VIEW)
V_DD
TXD3
TXD4
TXD5
GND
TXD6
TXD7
GTX_CLK
V_DD
TXD8
TXD9
TXD10
GND
TXD11
TXD12
TXD13
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
V_DD
RXD3
RXD4
RXD5
RXD6
GND
RXD7
RX_CLK
RXD8
RXD9
V_DD
RXD10
RXD11
RXD12
RXD13
GND
2
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