2.125Gbps, 3.3V

Quad-Port Bypass with Repeater

6

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Pin Description

PIN

NAME

FUNCTION

1, 4, 7, 8, 11, 26,

29, 30, 33, 36,

39, 42, 43, 46

GND

Electrical Ground

2

LIN1-

Inverted Data Input for L-Port 1

3

LIN1+

Noninverted Data Input for L-Port 1

5

LOUT1-

Inverted Data Output for L-Port 1

6

LOUT1+

Noninverted Data Output for L-Port 1

9

IN-

Inverted Data Input

10

IN+

Noninverted Data Input

12

CLKEN

Clock Enable. A TTL high level enables clock output at L-Port 1.

13,16, 21, 24

Positive Supply Voltage

14

CFP

CDR Filter Capacitor Positive Connection

15

CFM

CDR Filter Capacitor Negative Connection

17

SEL1

Select 1. A TTL low on SEL1 selects data from IN

±. TTL high on SEL1 selects data from LIN1±.

18

SEL2

Select 2. A TTL low on SEL2 selects data from the previous port bypass circuit. A TTL high on

SEL2 selects data from LIN2

±.

19

SEL3

Select 3. A TTL low on SEL3 selects data from the previous port bypass circuit. A TTL high on

SEL3 selects data from LIN3

±.

20

SEL4

Select 4. A TTL low on SEL4 selects data from the previous port bypass circuit. A TTL high on

SEL4 selects data from LIN4

±.

22

CDREN

CDR Enable Input (TTL). A high input enables the CDR for data recovery. A low input disables

the CDR (no data recovery).

23

LOCKEN

Lock Enable Input (TTL). A high input enables the LOCK output. A low input disables the

LOCK output.

25

LOCK

CDR Lock Output. Enabled by LOCKEN. A high output indicates the CDR PLL is locked. When

LOCKEN is low, LOCK is high.

27

OUT+

Noninverted Data Output

28

OUT-

Inverted Data Output

31

LIN4-

Inverted Data Input for L-Port 4

32

LIN4+

Noninverted Data Input for L-Port 4

34

LOUT4-

Inverted Data Output for L-Port 4

35

LOUT4+

Noninverted Data Output for L-Port 4

37

LIN3-

Inverted Data Input for L-Port 3

38

LIN3+

Noninverted Data Input for L-Port 3

40

LOUT3-

Inverted Data Output for L-Port 3

41

LOUT3+

Noninverted Data Output for L-Port 3

44

LIN2-

Inverted Data Input for L-Port 2

45

LIN2+

Noninverted Data Input for L-Port 2

47

LOUT2-

Inverted Data Output for L-Port 2

48

LOUT2+

Noninverted Data Output for L-Port 2

EP

Exposed

Pad

Ground. The exposed pad must be soldered to the circuit board for proper thermal

performance.