Finisar FCLF-8521-3 User Manual

FCLF-8520/8521-3 1000BASE-T SFP Product Specification 

 

 

 

1 V

EET

Transmitter ground  (common with receiver ground) 

1 

2 T

FAULT

Transmitter Fault. Not supported 

 

3 T

DIS

Transmitter Disable.  PHY disabled on high or open 

2 

4 

MOD_DEF(2) 

Module Definition 2. Data line for serial ID 

3 

5 

MOD_DEF(1) 

Module Definition 1. Clock line for serial ID 

3 

6 

MOD_DEF(0) 

Module Definition 0. Grounded within the module 

3 

7 

Rate Select 

No connection required 

 

8 

LOS 

Loss of Signal indication.   

4 

9 V

EER

Receiver ground  (common with transmitter ground) 

1 

10 V

EER

Receiver ground  (common with transmitter ground) 

1 

11 V

EER

Receiver ground  (common with transmitter ground) 

1 

12 RD-

 

Receiver Inverted DATA out.  AC coupled 

 

13 

RD+ 

Receiver Non-inverted DATA out.  AC coupled 

 

14 V

EER

Receiver ground  (common with transmitter ground) 

1 

15 V

CCR

Receiver power supply 

 

16 V

CCT

Transmitter power supply 

 

17 V

EET

Transmitter ground  (common with receiver ground) 

1 

18 

TD+ 

Transmitter Non-Inverted DATA in.  AC coupled 

 

19 TD-

 

Transmitter Inverted DATA in.  AC coupled 

 

20 V

EET

Transmitter ground  (common with receiver ground) 

1 

Notes:  1. Circuit ground is connected to chassis ground 

2. PHY disabled on T

DIS 

 > 2.0V or open, enabled on T

DIS 

 < 0.8V 

3. Should be pulled up with 4.7k – 10k Ohms on host board to a voltage between 2.0 V and 3.6 V. 
MOD_DEF(0) pulls line low to indicate module is plugged in. 
4. LVTTL compatible with a maximum voltage of 2.5V.  Not supported on FCLF-8521-3. 

 
 
 

VeeT

VeeT

VeeR

VeeR

TD-

TD+

RD+

RD-

VccT

VccR

VeeT

VeeR

TXFault

MOD-DEF(2)

MOD-DEF(1)

MOD-DEF(0)

Rate Select

LOS

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

Towards

ASIC

Towards

Bezel

TX Disable

VeeR

 

© Finisar Corporation December 16, 2005 RevB 

 

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