1.25gbps Single Fiber Bi-directional GBIC Transceiver

10～40km point-to-point transmission, RoHS compliant

Preliminary Data Sheet

March 17, 2006

Fiberxon Proprietary and Confidential, Do Not Copy or Distribute

Page 8 of 10

Controlled Electronic Version. 24hrs Obsolete when printed out without authorization Last printed 2006-6-6 13:36

Table 8 – Pin Function Definitions

Pin Name

Pin #

Name/Function

Signal Specification

RECEIVER SIGNALS

RGND

2, 3, 11,

14

Receiver Ground

(may be connected with TGND in GBIC)

Ground, to GBIC

15

Receiver +3.3/5 volt

Power, to GBIC

-RX_DAT

12

Receive Data, Differential PECL

High speed serial,

from GBIC

+RX_DAT

13

Receive Data, Differential PECL

High speed serial,

from GBIC

RX_LOS

1

Receiver Loss of Signal, logic high, open

collector compatible, 4.7k to 10kΩ pull up to

Low speed, from GBIC

TRANSMITTER SIGNALS

TGND

8, 9, 17,

20

Transmitter Ground

(may be connected with RGND internally)

Ground, to GBIC

16

Transmitter +3.3/5 volt

Power, to GBIC

+TX_DAT

18

Transmit Data, Differential PECL

High speed serial,

to GBIC

-TX_DAT

19

Transmit Data, Differential PECL

High speed serial,

to GBIC

TX_DISABLE

7

Transmitter Disable, logic high, open collector

GBIC

Low speed, to GBIC

TX_FAULT

10

Transmitter Fault, logic high, open collector

Low speed, from GBIC

CONTROL SIGNALS

MOD_DEF(0)

4

TTL low, output

MOD_DEF(1)

5

SCL serial clock signal, input

MOD_DEF(2)

6

SDA serial data signal, input/output

Please reference GBIC

standard, Annex D:

Module definition “4”