Fujitsu DevKit16 User Manual page 58

J7: UART0 RTS-CTS loopback
When SHORT, this jumper makes the RTS-CTS loopback on the UART0 RS-
232 interface.
J8 UART1 RTS-CTS loopback
:
When SHORT, this jumper makes the RTS-CTS loopback on the UART1 RS-
232 interface
J21, J22, J23: UARTs to RS232 drivers connection jumpers
These jumper headers are intended to provide access to the UART0, UART1
and User UART signals. An user can disconnect these signals from the RS-232
interfaces and connect an serial interface of his own to these signals – e.g. a
MIDI interface.
J21 pinout:
GND 1
SOT0 3
SIN0 5
To UART0&1 reset
Factory default setting: 3-4 short, 5-6 short
The GND and VCC signals are provided as supply pins for the user-built serial
interface.
J22 pinout:
GND 1
SOT1 3
SIN1 5
VCC 9
Factory default setting: 3-4 short, 5-6 short
The GND and VCC signals are provided as supply pins for the user-built serial
interface.
2 GND
4 to RS232
6 from RS232
8 from RS232
VCC 9 10 VCC
2 GND
4 to RS232
6 from RS232
NC 7
8 NC
10 VCC
56 56
56 56
input for RX
0 0
output for TX
0 0
output for DTR
0 0
input for RX
1 1
output for TX
1 1