20-101-0732 Rabbit Semiconductor, 20-101-0732 Datasheet - Page 43

• Manufacturer Part Number: 20-101-0732
• Description: INTERFACE SMART SCREEN OP7100
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-0732

• Module/board Type: Single Board Computer Module
• For Use With/related Products: OP7100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 20-101-732; 20-101-732

Z180 Serial Ports
The
have a separate baud-rate generator for each channel. The baud rate can be
divided down from the microprocessor clock, or from an external clock for
either or both channels.
The serial ports have a multiprocessor communications feature. When
enabled, this feature adds an extra bit to the transmitted character (where
the parity bit would normally go). Receiving
ignore all received characters except those with the extra multiprocessing
bits enabled. This provides a
wake up a processor without the processor having to intelligently monitor
all traffic on a shared communications link.
The block diagram in Figure 3-22 shows Serial Channel 0. Serial Chan-
nel 1 is similar, but control lines for
unshaded registers shown in Figure 3-22 are directly accessible as internal
registers.
OP7100
/DCD0
/RTS0
/CTS0
Z180
’s two independent, full-duplex asynchronous serial channels
CNTLA0
CNTLB0
STAT0
RXA0
Shift Register In
Figure 3-22. Z180 Serial Channel 0
Microprocessor Internal Bus
1
-byte attention message that can be used to
RDR0
RSR0
Baud-Rate
Generator
/RTS
and
Z180
/DCD
s can be programmed to
TDR0
TSR0
do not exist. The five
CKA0
Shift Register Out
Hardware 43
TXA0