Samsung S3C6400X User Manual page 1113

IRDA
Figure 38-2 shows the FIR modulation state machine. The FIR transmission mode can be selected by
programming ACR register. If an underrun condition occurs, the state machine appends the payload with
error crc data and terminates the transmission.
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
38-6
Specifications and information herein are subject to change without notice.
TX
Enable ~ena
0
ena
Preamble
Transmit
1
pre_end
Start
Flag
Transmit
2
str_end
Pay Load
Transmit
abort by
& CRC
underrun
3
pay_end
CRC
Transmit
4
crc_end
Stop
sip
Flag
Transmit
5
stp_end & ena
stp_end & ~ena
Figure 38-2 FIR modulation process
S3C6400X RISC MICROPROCESSOR
append
~abort
Frame data
with error
crc
6
2u
Pulse
transmit
7
pul_end & ena
pul_end & ~ena