z8f0822 ZiLOG Semiconductor, z8f0822 Datasheet - Page 122

• Manufacturer Part Number: z8f0822
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Infrared Encoder/Decoder
Architecture
Operation
PS022517-0508
System
Clock
Interrupt
Signal
Z8 Encore! XP
UART to Infrared Encoder/Decoder (Endec). The Infrared Endec is integrated with an on-
chip UART to allow easy communication between the Z8 Encore! XP and IrDA Physical
Layer Specification, v1.3-compliant infrared transceivers. Infrared communication pro-
vides secure, reliable, low-cost, point-to-point communication between PCs, PDAs, cell
phones, printers, and other infrared enabled devices.
Figure 17
When the Infrared Endec is enabled, the transmit data from the associated on-chip UART
is encoded as digital signals in accordance with the IrDA standard and output to the
infrared transceiver through the TXD pin. Similarly, data received from the infrared
transceiver is passed to the Infrared Endec through the RXD pin, decoded by the Infrared
Endec, and then passed to the UART. Communication is half-duplex, which means
simultaneous data transmission and reception is not allowed.
Address
UART
I/O
Figure 17. Infrared Data Communication System Block Diagram
displays the architecture of the Infrared Endec.
Data
®
F0822 Series products contain a fully-functional, high-performance
Baud Rate
Clock
TxD
RxD
Encoder/Decoder
Infrared
(Endec)
Z8 Encore! XP
RXD
TXD
Product Specification
Infrared Encoder/Decoder
®
RXD
TXD
F0822 Series
Transceiver
ZHX1810
Infrared
Zilog
109