Digi 90000278_B manual Connectors Power and Serial Interface P4

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Connectors: Power and Serial Interface (P4)

The Digi One EM has a single 12-pin, serial interface port (labeled P4) that supports EIA-232 (TTL levels only), data rates up to 230 Kbps and full-modem control. The following figure helps you locate pins, and the table helps you identify which signal uses each pin.

Pin

Signal Name

Description

 

 

 

 

+5VDC to

 

1

+9VDC (input

Input power to Digi One EM

 

only)

 

 

 

 

2

GND

Reference Ground for input power

 

 

 

3

RxD

Receive Data (input)

 

 

 

4

TxD

Transmit Data (output)

 

 

 

5

RTS

Request To Send

 

 

 

6

DTR

Data Terminal Ready

 

 

 

7

CTS

Clear To Send

 

 

 

8

DCD

Data Carrier Detect

 

 

 

9

DSR

Data Set Ready

 

 

 

10

RST~

Reset

 

 

 

11

Reserved

Not used

 

 

 

12

Reserved

Not used

 

 

 

Digi One EM Hardware Reference

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Contents Hardware Reference Manual Digi One EM Page Contents Appendix B Digi One EM Certifications About This Guide T r o d u c t i o nIntroducing the Digi One EM Support Information Digi One EM Drawing O u t t h e D i g i O n e E MConnectors Power and Serial Interface P4 Connectors Ethernet Interface P1 LEDs Reset SwitchBlinking 1-1-1 means Overview O u t t h e D e v e l o p m e n t B o a r dDevelopment Board Illustration DB-9 Serial Interface P1 Pin SignalReset Switch SW1 Power Jack P7 CR9 LEDs CR4 CR11SW1 Appendix a D i g i O n e E M Specification s FCC Part 15 Class a Appendix B D i g i O n e E M C e r t i f i c a t i o n sIces 003 Class a Product SafetyDigi One EM Hardware Reference Digi One EM Hardware Reference
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