Difference between revisions of "DCE"
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* The DTE (PC) has the male DB-9 connector | * The DTE (PC) has the male DB-9 connector | ||
| − | == H1 Connector == | + | == Connectors == |
| + | |||
| + | === H1 Connector === | ||
* Pins signal directions are reversed from an FTDI card | * Pins signal directions are reversed from an FTDI card | ||
| Line 35: | Line 37: | ||
# Rx (out) | # Rx (out) | ||
# RTS (in) | # RTS (in) | ||
| + | |||
| + | === H2 - Power === | ||
| + | |||
| + | * 2x4 right angle header (optional) | ||
== Test Procedure == | == Test Procedure == | ||
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
