
PRELIMINARY
S3C6400X RISC MICROPROCESSOR
IRDA
38
-9
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
TX
Enable
ACREG[7]
1st Start
Flag
Transmit
Pay Load
Transmit
with stuff bit
CRC
Transmit
with stuff bit
Stop
Flag
Transmit
~ena
ena
pay_end
crc_end
stp_end & ena
append
Frame data
with error
crc & eflag
abort by
underrun
~abort
2u
Pulse
transmit
sip
pul_end & ena
0
stp_end & ~ena
pul_end & ~ena
1
2
3
4
5
6
str_end
Figure 38-5 MIR modulation process.
Figure 38-5 describes MIR modulation state machine. This machine works very similarly as FIR
modulation state machine. The major difference is that the MIR data transmission needs bit stuffing.
After the every 5 consecutive ones, a zero data should be stuffed in MIR payload data. The state
machine for this bit-stuffing is not presented here.