B&B Electronics 232BSS4 - Appendix C: Block Diagram

Documentation Number 232BSS4 0812 Manual Appendix C C-1
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
Appendix C: Block Diagram
232BSS4 Block Diagram
PORT APORT BPORT CPORT D
Microcontroller
UART UART UART UART
3 2 7 8 6 1 4 5
TD
RD
RTS
CTS
DSR
DCD
DTR
GND
3 2 7 8 6 1 4 5
TD
RD
RTS
CTS
DSR
DCD
DTR
GND
3 2 7 8 6 1 4 5
TD
RD
RTS
CTS
DSR
DCD
DTR
GND
3 2 7 8 6 1 4 5
TD
RD
RTS
CTS
DSR
DCD
DTR
GND
UART
64K RAM
2 3 4 5 6 8 20 7
TD
RD
RTS
CTS
MASTER
DSR
DCD
DTR
GND