ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 79

• Manufacturer Part Number: ez80190
• Description: Ez80190 Microprocessor
• Manufacturer: ZiLOG Semiconductor

Universal Asynchronous Receiver/
Transmitter
PS006613-0306
To eZ80
The UART module implements all of the logic required to support asynchronous
communications protocol. The module also implements two separate 16-byte
FIFOs for both transmit and receive. A block diagram of the UART is illustrated in
Figure
The UART module provides the following asynchronous communications protocol
related features/functions.
•
•
•
•
•
•
®
CPU
5, 6, 7 or 8-bit data transmission
Even/odd or no parity bit generation and detection
Start and stop bit generation and detection (supports up to two stop bits)
Line break detection and generation
Receiver overrun and framing error detection
Logic and associated I/O to provide modem hand-shake capability
12.
Address
Interrupt
Signal
Data
I/O
Figure 12. UART Block Diagram
PRELIMINARY
Transmit
Receive
Modem
Control
Buffer
Buffer
Logic
Universal Asynchronous Receiver/Transmitter
eZ80190 Product Specification
RxD0/RxD1
TxD0/TxD1
CTS0/CTS1
RTS0/RTS1
DSR0/DSR1
DTR0/DTR1
DCD0/DCD1
RI0/RI1
65