Oplink Communications, Inc

S0239. Rev.02. (web) 2012-05-14

5

TRPV3GELRx000M2G

Interfacing the Transceivers

Application Schematics

Communication is via a serial 2-wire serial interface. As described in the document SFF-8472 (REV. 9.4) there are two distinct address spaces:

R: 4.7 to 10kΩ

CAP Values in µF

No Connection: 7

TX DATA IN+

1H coil or ferrite bead

µ

(<0.2 Ω series resistance)

0.1

TX DATA IN-

TX Disable

0.1

0.1

to 50 Ωload

3.3V

RX DATA OUT+

RX DATA OUT-

MOD_DEF(0)

MOD_DEF(1)

MOD_DEF(2)

LOS

to 50Ω load

TX Fault

Vcc

3.3V

Vcc

50Ω line

50Ω line

50Ω line

50Ω line

R

R

R

R

R

8

5

4

6

2

18

19

3

15

16

13

12

1, 9,10,11,14,17,20

SFP

Base Address A0(hex)

Byte Address

Content

0 – 95

Serial Transceiver ID as defined in SFP MSA

96 – 127

OPLINK Specific

128 – 255

Reserved

Base Address A2(hex)

Byte Address

Content

0 - 55

Alarm & Warnings thresholds & limits

56 - 95

External calibration constants (not used)

96 – 119

Values from real time diagnostic monitoring

120 – 127

Not used

128 – 247

Customer specific, writable area

248 - 255

Not used