User`s manual

User’s Manual 75
Once you establish that the programming port will never again be needed for program-
ming, it is possible to use the programming port for additional I/O lines. Table E-1 lists the
pins available for this alternate configuration.
Table E-1. RCM3000 Programming Port Pinout Configurations
Pin Pin Name Default Use Alternate Use Notes
Header J3
1 RXA Serial Port A PC7—Input
2GND
3CLKA
PB1—Bitwise or parallel
programmable input
4VCC
5 RESET
Connected to reset
generator U5
6 TXA Serial Port A PC6—Output
8 STATUS Output
9 SMODE0 Input
Must be low when
RCM3000 boots up
10 SMODE1 Input
Must be low when
RCM3000 boots up