Motorola F3030A, Developer'S Manual, Page: 24 / 72

Developer Board and Interfaces Description
18 98-08901C67-O
3.4.2.1 RS232
The 9-pin, D-type RS232-1 serial port (J350) is the primary interface to the g20 UUT. The UUT RS232 signals are active-low
CMOS-level signals (0-2.7 V), which are converted by the Developer Board to standard RS232 levels for PC communications.
3.4.2.2 USB
The USB interface (J300) operates according to the g20 UUT configuration. The Developer Board has a complete USB trans-
ceiver circuit to support USB communications for g20 units that do not include a USB driver of their own. The Developer Board
USB interface can be overridden manually when using a g20 unit that does include its own USB driver interface.
Table 9. RS232-1 Connector Pinout (J350)
Pin # Description DTE I/O
1 DCD In
2 RXD In
3 TXD Out
4 DTR Out
5 Ground
6 DSR In
7 RTS Out
8 CTS In
9 RI In
Note
The RS232-1 connector pin names are DTE-oriented.
Table 10. USB Connector Pinout (J300)
Pin # Description
1 VCC
2 D-
3 D+
4 Ground