User`s manual

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 Table of Contents OP7100
Digital I/O ............................................................................................35
Serial Communication..........................................................................36
RS-232 Communication ..................................................................38
Receive and Transmit Buffers.......................................................38
CTS/RTS Control ......................................................................... 39
Modem Communication ............................................................... 39
RS-485 Communication ..................................................................40
Developing an RS-485 Network ................................................... 40
Use of the Serial Ports..................................................................... 42
Z180 Serial Ports ..........................................................................43
Asynchronous Serial Communication Interface...................................45
ASCI Status Registers ..................................................................... 45
/DCD0 (Data Carrier Detect)........................................................ 45
TIE (Transmitter Interrupt Enable) ...............................................45
TDRE (Transmitter Data Register Empty) ...................................45
CTS1E (CTS Enable, Channel 1) .................................................46
RIE (Receiver Interrupt Enable) ...................................................46
FE (Framing Error) .......................................................................46
PE (Parity Error) ........................................................................... 46
OVRN (Overrun Error) ................................................................ 46
RDRF (Receiver Data Register Full) ............................................46
ASCI Control Register A ................................................................47
MOD0–MOD2 (Data Format Mode Bits) .................................... 47
MPBR/EFR (Multiprocessor Bit Receive/Error Flag Reset)........47
/RTS0 (Request to Send, Channel 0) ............................................47
CKA1D (CKA1 Disable)..............................................................47
TE (Transmitter Enable) ...............................................................47
RE (Receiver Enable) ................................................................... 48
MPE (Multiprocessor Enable) ......................................................48
ASCI Control Register B ................................................................48
SS (Source/Speed Select) ............................................................. 48
DR (Divide Ratio) ........................................................................ 49
PEO (Parity Even/Odd) ................................................................ 49
/CTS/PS (Clear to Send/Prescaler) ............................................... 49
MP (Multiprocessor Mode) .......................................................... 49
MPBT (Multiprocessor Bit Transmit) ..........................................49
Chapter 4: Software 51
Supplied Software ................................................................................52
Digital I/O ............................................................................................53
Real-Time Clock (RTC) .......................................................................54
Display .................................................................................................55
Flash EPROM ................................................................................. 55