FTS125-CTV Data Sheet #:

SG185

Page 4

Rev:

02

Date:

01/03/12

© Copyright 2012 The Connor-Winfield Corp. All Rights Reserved

Specifications subject to change without notice

Pin Description

Table 1

Pin #

Pin Name

Description

1

TXC

RS-232communicationtransmitsignalforUART2(Optional)

2

TXB

RS-232communicationtransmitsignalforUART1(Optional)

3

TXA

RS-232communicationtransmitsignalforUART0(Optional)

4

GND

5

RXC

RS-232communicationreceivesignalforUART2(Optional)

6

RXB

RS-232communicationreceivesignalforUART1(Optional)

7

RXA

RS-232communicationreceivesignalforUART0(Optional)

8

*Bootsel

NormallyHIGH-OnlypulledlowforRS-232re-programmingofGPSsoftware.

Defaultstateispulledhighinternally.

9

10MHzRefInput

ExternalLVCMOS10MHzreference(Optional).Defaultstateispulledhighinternally.

10

*Reset

HardwareResetfortheGPStimingcircuitry.Pulllowtoreset.Defaultstateispulled

highinternally.

11

GND

12

1PPSRefInput

ExternalLVCMOS1PPSreference(Optional).Defaultstateispulledhighinternally.

13

GND

14

AntennaSupplyVoltage

AntennaSupplyVoltage.Limitcontinuouscurrentto45mAMax.

15

GND

16

VCC1

SupplyvoltageforGPStimingcircuitry.

17

VCC2

Supplyvoltagefornoiseclean-upandinterfacingcircuitry.

18

GND

19

SYNC1Control

Lockmodecontrolsignal1.SeeTable4forfunctionaldescription.

Defaultstateispulledhighinternally.

20

SYNC2Control

Lockmodecontrolsignal2.SeeTable4forfunctionaldescription.

Defaultstateispulledhighinternally.

21

*Disable

Open/High=enabledoutputs.Pulllowtodisablethe10MHzCMOSandSINEoutputs.

Defaultstateispulledhighinternally.

22

Unused

23

HoldoverStatus

High=UnitisinHoldover

24

LockStatus

High=Unitislockedtoselectedreference.

25

AntennaFaultStatus

High=AfaulthasbeendetectedonPin14(AntennaSupplyVoltage)

26

1PPSCMOSOutput

1PPSCMOSoutputprovidedbytheWi125

27

GND

28

10MHzCMOSOutput

10MHzlowjitterCMOSoutput

29

Unused

30

Unused

31

GND

32

10MHzSINEOutput

10MHzACcoupledlowjitterSINEoutput