M-Station Baseboard
5.4
JP5: USB Power Current Measurement Terminal
Reserved for NEC Electronics use only.
5.5
JP8 and JP9: Host Interface RxD_SI and TxD_SO Select
RXD_SI is connected to 16-pin header and 100-pin inter-board connector. It is then connected to TxD
Input or serial output (SO) of microcontroller CPU on the micro-board. Likewise, the TXD_SO
connects to the 16-pin header and 100-pin inter-board connector, and then to RxD or serial input (SI)
of the microcontroller CPU.
Figure 15.
JP8 and JP9 Settings
Table 1
and JP9 Settings
4.
JP8
Jumper
Jumper Setting
Description
Default Setting
1 to 2
Select TxD from USB host interface
1 to 2 (UTXD to TXDSO)
2 to 3
Select serial output (SO) from USB host interface
JP8
2 to 4
Connect micro-board RxD to input from RS-232
transceiver
1 to 2
Select RxD from USB host interface
1 to 2 (URXD to RXDSI)
2 to 3
Select serial input (SI) from USB host interface
JP9
2 to 4
Connect micro-board TxD output to RS-232
transceiver
19
Содержание M-Station
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