214
Boards
© Tibbo Technology Inc.
#10
RST
Reset input, active low, use open collector driving circuit
#11
GND
Ground
#12
3.3V
Output to external device
Input from external device
*Not used in Tibbo serial-over-IP application. Your Tibbo BASIC/C program can use
this line if needed.
Serial-over-IP application offered by Tibbo defines 15 "mapping options", or ways in
which available I/O lines are utilized ("spare" input is not used or shown). These are
presented in the table below:
Mappi
ng
optio
n
Available signals
Pins on the DB9M connector of the
EM1202EV-RS
Miss
ing
line
#
2
#3
#8
#7
#6
#4
#9
Optio
n 0
RX/TX/CTS/RTS/DS
R/DTR
RX
TX
CT
S
RT
S
DS
R
DT
R
---
---
Optio
n 1
RX/TX/CTS/RTS/DS
R/DTR + RX/
tx
RX
TX
CT
S
RT
S
DS
R
DT
R
RX
4
tx4
Optio
n 2
RX/TX/CTS/RTS +
RX/TX + RX/
tx
RX
TX
CT
S
RT
S
RX3
TX
3
RX
4
tx4
Optio
n 3
RX/TX/CTS/RTS +
RX/TX/CTS/
rts
RX
TX
CT
S
RT
S
RX3
TX
3
CT
S3
rts3
Optio
n 4
RX/TX/CTS/RTS +
RX/TX/DSR/
dtr
RX
TX
CT
S
RT
S
RX3
TX
3
DS
R3
dtr3
Optio
n 5
RX/TX/DSR/DTR +
RX/TX + RX/
tx
RX
TX
RX2
TX
2
DS
R
DT
R
RX
4
tx4
Optio
n 6
RX/TX/DSR/DTR +
RX/TX/CTS/
rts
RX
TX
RX2
TX
2
DS
R
DT
R
CT
S2
rts2
Optio
n 7
RX/TX/DSR/DTR +
RX/TX/DSR/
dtr
RX
TX
RX2
TX
2
DS
R
DT
R
DS
R2
dtr2
Optio
n 8
RX/TX + RX/TX +
RX/TX + RX/
tx
RX
TX
RX2
TX
2
RX3
TX
3
RX
4
tx4
Optio
n 9
RX/TX/CTS/
rts
+
RX/TX + RX/TX
RX
TX
RX2
TX
2
RX3
TX
3
CT
S
rts
Optio
n 10
RX/TX/DSR/
dtr
+
RX/TX + RX/TX
RX
TX
RX2
TX
2
RX3
TX
3
DS
R
dtr
Optio
n 11
RX/TX/CTS/RTS +
RX/
tx
/CTS/RTS
RX
TX
CT
S
RT
S
CT
S4
RT
S4
RX
4
tx4
Optio
n 12
RX/TX/CTS/RTS +
RX/
tx
/DSR/DTR
RX
TX
CT
S
RT
S
DS
R4
DT
R4
RX
4
tx4
Optio
n 13
RX/TX/DSR/DTR +
RX/
tx
/CTS/RTS
RX
TX
CT
S4
RT
S4
DS
R
DT
R
RX
4
tx4
Optio
n 14
RX/TX/DSR/DTR +
RX/
tx
/DSR/DTR
RX
TX
DS
R4
DT
R4
DS
R
DT
R
RX
4
tx4
Mappi
ng
optio
n
Available signals
#
6
#5
#4
#3
#7
#8
#1
Miss
ing
line
Pins on the TTL connector of the
EM1202EV-TM and "-TS"