beautypg.com

Serdes ic protocol ic pld / pal, Delta sfp module, Recommend interface circuit – Delta Electronics SFP Bi-Directional Transceiver Module SPBD-155F4J1RT User Manual

Page 8: Depands on serdes ic used, Sfp host board schematic, Recommended host board supply filtering network

background image

SPBD-155F4J1RT

DELTA ELECTRONICS, INC.

8 Revision:

S1

09/20/2006

www.deltaww.com

8. Recommend Interface Circuit

Laser Diode

Photo Diode

1uH

1uH

0.1uF

10uF

0.1uF

0.01uF

0.01uF

0.01uF

0.01uF

0.1uF

10uF

RES1

RES1

100 Ohms*

RES1

RES1

RES1

10k Ohms

100 Ohms

VCC

Protocol Vcc

SerDes IC

Protocol IC

PLD / PAL

Mod_def 2

Mod_def 1

Mod_def 0

3.3V

3.3V

DELTA SFP Module

Preamp &

Tx_Disable

Quantizer

Tx_Fault

TD +

TD -

VeeT

RD +

RD -

Rx_LOS

VeeR

Tx_Disable

Tx_Fault

Rx_LOS

RES1 = 4.7k to 10k Ohms

VccT

VccR

Laser Driver

* Depands on SerDes IC used

EEPROM

SFP Host Board Schematic

Recommended Host Board Supply Filtering Network

Design criterion of the capacitor used is the

resonant frequency and its value must be in the

order of the nominal data rate. Short trace

lengths are mandatory.