Difference between revisions of "DCE"
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| + | [[File:tindie-mediums.png|link=https://www.tindie.com/products/24285/]] | ||
| + | |||
| + | [[File: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 == | == DCE - RS-232 to TTL == | ||
| − | + | * The DCE (peripheral) has the female DB-9 connector | |
| − | * The DCE (peripheral) has the female | ||
[[File:DTE_DCE.png]] | [[File:DTE_DCE.png]] | ||
| − | == H1 Connector == | + | * 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 === | |
# GND | # GND | ||
# CTS (out) | # CTS (out) | ||
| − | # VCC | + | # VCC (3.3V or 5V) |
| + | # TX (in) | ||
| + | # Rx (out) | ||
# RTS (in) | # RTS (in) | ||
| − | + | ||
| − | + | === H2 - Power === | |
| + | |||
| + | * 2x4 right angle header (optional) | ||
| + | |||
| + | == Test Procedure == | ||
| + | |||
| + | [[File: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 Application == | ||
| − | * SP232ACN-L is 5V part | + | * [https://www.mouser.com/datasheet/2/146/SP232A-1888996.pdf SP232ACN-L] is 5V part |
| − | * ICL3232IBNZ is 3.3V or 5V part | + | * [https://www.mouser.com/datasheet/2/698/REN_icl3221_22_23_32_41_43_DST_20190405-1997874.pdf ICL3232IBNZ] is 3.3V or 5V part |
[[File:SP232A_app.PNG]] | [[File:SP232A_app.PNG]] | ||
| Line 27: | Line 69: | ||
* The [[DTE]] (PC) has the male connector | * The [[DTE]] (PC) has the male connector | ||
| + | * [[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
Contents
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
- 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
- GND
- CTS (out)
- VCC (3.3V or 5V)
- TX (in)
- Rx (out)
- RTS (in)
H2 - Power
- 2x4 right angle header (optional)
Test Procedure
- FTDI-49MM
- 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
- SP232ACN-L is 5V part
- ICL3232IBNZ is 3.3V or 5V part
DTE (reference)
- The DTE (PC) has the male connector
- RS-232 Breakout Card
