Difference between revisions of "DCE"

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[[File:tindie-mediums.png|link=https://www.tindie.com/products/24285/]]
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[[File:DCE_Assembly_Rev2_P560_720px.jpg]]
 
[[File:DCE_Assembly_Rev2_P560_720px.jpg]]
  
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* TTL to RS-232 converter
 
* TTL to RS-232 converter
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** Tx/RX/RTS/CTS
 
* Female DB-9 connector
 
* Female DB-9 connector
 
* FTDI pinout (reversed directions to directly connect to FTDI Interface)
 
* FTDI pinout (reversed directions to directly connect to FTDI Interface)
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* The DTE (PC) has the male DB-9 connector
 
* The DTE (PC) has the male DB-9 connector
  
== H1 Connector ==
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== Connectors ==
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=== H1 Connector ===
  
 
* Pins signal directions are reversed from an FTDI card
 
* Pins signal directions are reversed from an FTDI card
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# Rx (out)
 
# Rx (out)
 
# RTS (in)
 
# RTS (in)
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=== H2 - Power ===
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* 2x4 right angle header (optional)
  
 
== Test Procedure ==
 
== Test Procedure ==
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* The [[DTE]] (PC) has the male connector
 
* The [[DTE]] (PC) has the male connector
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* [[RS-232 Breakout Card]]
  
 
== DCE Assembly Sheet ==
 
== DCE Assembly Sheet ==
  
 
* [[DCE Assembly Sheet]]
 
* [[DCE Assembly Sheet]]

Latest revision as of 14:23, 19 August 2022

Tindie-mediums.png

DCE Assembly Rev2 P560 720px.jpg

Features

  • TTL to RS-232 converter
    • Tx/RX/RTS/CTS
  • Female DB-9 connector
  • FTDI pinout (reversed directions to directly connect to FTDI Interface)
  • Up to 115,200 baud @ 5V
  • Up to 250,000 baud @ 3.3V
  • 49x49mm card
  • 4x 4-40 holes

DCE - RS-232 to TTL

  • The DCE (peripheral) has the female DB-9 connector

DTE DCE.png

  • The DTE (PC) has the male DB-9 connector

Connectors

H1 Connector

  • Pins signal directions are reversed from an FTDI card
    • Can be directly wired to FTDI connector

Pinout

  1. GND
  2. CTS (out)
  3. VCC (3.3V or 5V)
  4. TX (in)
  5. Rx (out)
  6. RTS (in)

H2 - Power

  • 2x4 right angle header (optional)

Test Procedure

DCE DTE Test P554 720px.jpg

  • FTDI-49MM
    • 3.3V/5V jumper set to 5V
    • Power cable from FTDI-49MM 5V Connector split to both DCE/DTE cards
  • DCE/DTE Cards
    • 9 pin connectors plugged together
  • FTDI loopback cable
    • TX/RX connected
    • RTSCTS connected
  • USB B cable to PC
  • Run PuTTY
    • 115,200 baud, RTS/CTS
  • Type and it comes back

SP232A Application

SP232A app.PNG

DTE (reference)

DCE Assembly Sheet