Section 28 Serial Communication Interface with FIFO/IrDA Interface (SCIF/IrDA)
Rev. 1.00 Oct. 01, 2007 Page 1180 of 1956
REJ09B0256-0100
28.5.2
Operation of Infrared Data Communication Interface
Figure 28.22 shows a block diagram of the infrared data communication interface.
The infrared data communication interface selects whether serial communication data for the
SCIF2 channel is modulated/demodulated to the infrared data for transmission or reception.
When the IRMOD bit in SCSMRIR is 1, the modulated/demodulated IrDA data is input/output
from the SCIF2_TXD/SCIF2_RXD pin. When the IRMOD bit in SCSMRIR is 0, the data for the
SCIF2 channel is bypassed to the SCIF2_TXD/SCIF2_RXD pin.
When the LOOP bit in SCSMRIR is set to active, output from the infrared data modulation unit is
directly input to the demodulation unit (for loopback testing).
The selector does not use clocks for its logic. Therefore, the status of the selector after a reset or in
standby depends on only the value of SCSMRIR.
Note: This module can detect short pulses such as chattering in reception, be sure to secure the
shortest pulse width specified by the IrDA standard.
Infrared data communication interface
Serial data
transmission
Serial data
reception
s_rxd
s_txd
SCIF2
Channel
IRMOD
p_txd
s_txd
s_txd
i_txd_n
i_txd_n
Modulation unit
Port logic block
SCIF2_TXD
SCIF2_RXD
IRMOD
LOOP
p_rxd
p_rxd
p_rxd
i_rxd
i_rxdp_n
Demodulation unit
0
1
1
0
1
0
Figure 28.22 Block Diagram of Infrared Data Communication Interface
Содержание SH7763
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Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
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Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
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Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
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Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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