Z8F0113HJ005EG Datasheet, PDF (132/245 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F0823 Series
Product Specification
117
Infrared Encoder/Decoder
Z8 Encore! XP F0823 Series products contain a fully-functional, high-performance UART
with an 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, Version 1.3-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.
Architecture
Figure 16 displays the architecture of the infrared endec.
System
Clock
UART
RxD
TxD
Baud Rate
Clock
Infrared
Encoder/Decoder
(Endec)
RXD
TXD
Infrared
Transceiver
RXD
TXD
Interrupt I/O
Data
Signal Address
Figure 16. Infrared Data Communication System Block Diagram
Operation
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 infra-
red 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
PS024315-1011
PRELIMINARY
Infrared Encoder/Decoder