1

70

10

9

8

71

72

73

74

75

76

77

78

79

80

7

6

5

4

3

2

20

19

18

17

16

15

14

13

12

11

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

69 68 67 66 65 64 63 62 61

60

59

58

57

TLK2541

VDD

GND

RXD3

RXD4

RXD5

RXD6

RXD7

GND

RX_CLK

RXD8

RXD9

RXD10

VDD

RXD11

RXD12

RXD13

RXD14

RXD15

VDD

GND

TXD15

GND

TXD14

TXD13

TXD12

GND

TXD11

TXD10

TXD9

VDD

TX_CLK

TXD8

TXD7

GND

TXD6

TXD5

TXD4

TXD3

VDD

TXD2

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.

2

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© 2008, Texas Instruments Incorporated

Product Folder Link(s) :TLK2541