286Tibbo Project System (TPS)
© Tibbo Technology Inc.
LEDs
Two yellow LEDs are connected to two control lines of the CPU (through buffering
gates). LEDs light up for the LOW state of control lines.
7.2.9.4
#01, M1S: Four-line RS232 Port
Function: Simple RS232 port with only TX, RX, RTS, and CTS lines
Form factor: M1S
Category: Input/output module
Special needs: [SER], [INT]
Power requirements: 5V/20mA
Mates with: #19, #20, #21 (limited use)
See also: #02, #05
Details
This is a standard "simple" RS232 port. This Tibbit is based on a generic RS232
transceiver (we use Zywyn ZT232F).
For "normal" RS232 applications, this Tibbit has to be connected to the TX and RX
lines of the CPU's UART (see [SER]). Planning to use RTS/CTS flow control as well?
An interrupt line must be available, too (see [INT]).
Combining this Tibbit with the "C" device #19 (DB9M connector) will create a serial
port with standard pin assignment on the DB9M:
To Next Page
Loading...
Need help?
General