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PRELIMINARY
IRDA
S3C6400X RISC MICROPROCESSOR
38-12
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.
SPECIAL FUNCTION REGISTERS
IRDA CONTROL REGISTER(IRDA_CNT)
Register
Address
R/W
Description
Reset Value
IrDA _CNT 0x7F00_7000
R/W
IrDA Control Register
0x00
IrDA _CNT
Bit
Description
Initial State
TX enable
[7]
TX enabled. Bit 7 must be set to ‘1’ to enable data
transmission in MIR/FIR Ir modes.
0
RX enable
[6]
RX enabled. Bit 6 must be set to ‘1’ to enable data receive
in all MIR/FIR Ir modes.
0
Core loop
[5]
Core loop for software debugging. The IRRX port
connects directly to the IRTX internally.
0
MIR half mode
[4]
MIR half mode. When bit 4 is set to a ‘1’, the operating
speed in the MIR mode changes from 1.152 Mbps to
0.576 Mbps.
0
Send IR pulse
[3]
Send 1.6-us IR pulse. When the IrDA_MDR[3] bit equals
to a ‘1’ and the CPU writes a ‘1’ to this bit, the transmitting
interface device sends a 1.6-us IR pulse at the end of the
frame. Bit 3 is cleared automatically by the transmitting
interface device at the end of 1.6-us IR pulse data
transmission.
0
Reserved [2]
Reserved
0
Frame abort
[1]
Frame abort. The CPU can intentionally abort data
transmission of a frame by writing a ‘1’ to bit 1. Neither the
end flag nor the CRC bits are appended to the frame. The
receiver will find the frame with the abort pattern in the
MIR mode and a PHY-error in the FIR mode. The CPU
must reset the TX FIFO and reset this bit by writing a ‘0’ to
bit ‘1’ before next frame can be transmitted.
0
SD/BW
[0]
This signal controls IrDA_SDBW output signal.
It is used for controlling mode (shutdown, band width) of
IrDA transceiver.
0