IRCC SMSC Corporation, IRCC Datasheet - Page 30

• Manufacturer Part Number: IRCC
• Description: INFRARED COMMUNICATIONS CONTROLLER
• Manufacturer: SMSC Corporation

Transmit Mode
Transmit mode enables the SCE IrDA FIR and
Consumer IR transmitters whenever TC goes
active, or the FIFO THRESHOLD has been
exceeded.
input is connected to the Host System Data Bus
and the FIFO output is connected to the SCE
transmitter input.
software controlled when the IrDA FIR encoders
are active. The Consumer IR encoder will reset
Transmit mode in hardware following the rising
edge of nActive Frame following a FIFO
underrun.
Receive Mode
Receive mode enables the SCE IrDA FIR and
Consumer IR receivers. In Receive mode, the
SCE FIFO output
System Data Bus, the FIFO input is connected to
the SCE receiver output.
strictly software controlled when the IrDA FIR
encoders are active. The Consumer IR encoder
will reset Receive mode in hardware following the
rising edge of nActive Frame following a FIFO
underrun or TC.
In Transmit mode, the SCE FIFO
Transmit mode is strictly
is connected to the Host
D7
0
0
1
1
Receive mode is
D6
0
1
0
1
Receive/Transmit Disabled (default)
Transmit Mode
Receive Mode
Undefined
MODE DESCRIPTION
30
SIP Enable, bit 5
If the SIP Enable is one, an SIR Interaction Pulse
occurs every 500ms if an IrDA FIR mode has
been selected and the transmitter or receiver is
not otherwise engaged.
Brick Wall, bit 4
When the Brick Wall bit is active the IrCC sends
back-to-back IrDA FIR frames separated by the
number of additional flags specified in the brick
wall count register. NOTE: BOF counts do not
apply during brick walled messages. The Data
Size register can also be used when the Brick
Wall bit is active to send back-to-back IrDA FIR
frames when the DMA data block is larger than
the IrDA message length.
maximum number of data bytes according to the
data size register have been transferred and the
DMA terminal count or the FIFO Empty flags
have not been activated the next message is
brick walled to the previous message (Table 17).
The Brick Wall bit is software controlled only.
In this case, if the