TLK2541 Datasheet, PDF (2/26 Pages) Texas Instruments – 1 TO 2.6 GBPS TRANSCEIVER

TLK2541
SLLS779B – JANUARY 2008 – REVISED APRIL 2008...................................................................................................................................................... www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
DESCRIPTION (CONTINUED)
At half rate, the TLK2541 only uses half of the parallel transmit and receive data busses. 10 bits of data on
TXD[0:9] are latched by TX_CLK and serialized. If 8B/10B coding is enabled, 8 bits of data plus 1 bit of control is
latched and the resulting 10 bit code word is serialized. The 10 bit received data word is output on RXD[0:9]. If
8B/10B decoding is enabled, the 10 bit received word is decoded and the 8 bit data plus 1 bit status is output.
The TLK2541 provides an internal loopback capability for self-test purposes. Serial data from the serializer is
passed directly to the deserializer, providing the protocol device with a functional self-check of the physical
interface.
The TLK2541 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 625 mW typically. The TLK2541 is characterized for operation from –40°C
to 85°C.
The TLK2541 is designed to be hot-plug capable. An on-chip power-on reset circuit holds the RX_CLK low and
goes to high impedance on the parallel side output signal terminals as well as TXP and TXN during power up.
TXD2
VDD
TXD3
TXD4
TXD5
TXD6
GND
TXD7
TXD8
TX_CLK
VDD
TXD9
TXD10
TXD11
GND
TXD12
TXD13
TXD14
TXD15
GND
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
1
60
2
59
3
58
4
57
5
56
6
55
7
54
8
53
9
52
10
51
11
TLK2541
50
12
49
13
48
14
47
15
46
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45
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44
18
43
19
42
20
41
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
GND
VDD
RXD3
RXD4
RXD5
RXD6
RXD7
GND
RX_CLK
RXD8
RXD9
RXD10
VDD
RXD11
RXD12
RXD13
RXD14
RXD15
VDD
GND
2
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