23. Serial Peripheral Interface (HSPI)
Rev.1.00 Jan. 10, 2008 Page 1160 of 1658
REJ09B0261-0100
Bit Bit
Name
Initial
Value R/W Description
3 RXOW
0 R/W
*
Receive Buffer Overrun Warning Flag
This status flag is set to 1 when a new serial data
transfer has started before the previous received data is
read from SPRBR. The RXOW remains set to 1 until
writing 0 to this bit position.
If RXOW= 1 and ROIE = 1, an interrupt is generated.
2
RXFL
0
R
Receive Buffer Full Status Flag
This status flag indicates that new data is available in
the SPRBR and has not yet been read. It is set to 1
when the shift register contents are loaded into the
SPRBR in the end of a serial bus transfer. This bit is
cleared to 0 by reading SPRBR.
1
TXFN
0
R
Transmit Complete Status Flag
This status flag indicates that the last transmission has
been completed. It is set to 1 when SPTBR is ready to
accept data from the peripheral bus. This bit is cleared
to 0 by writing data to SPTBR.
If TXFN = 1 and TFIE = 1, an interrupt is generated.
0
TXFL
0
R
Transmit Buffer Full Status Flag
This status flag indicates the SPTBR stores data that
has not been transmitted. It is set to 1 when SPTBR is
written with data from the peripheral bus. This bit is
cleared to 0 when SPTBR is ready to accept data from
the peripheral bus.
Note:
*
These bits are readable/writable bits. Writing 0 initializes these bits to the initial values
of respective bits, while writing 1 is ignored.
Содержание SH7781
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Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
Страница 788: ...15 Clock Pulse Generator CPG Rev 1 00 Jan 10 2008 Page 758 of 1658 REJ09B0261 0100 ...
Страница 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
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Страница 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Страница 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
Страница 1688: ...Appendix Rev 1 00 Jan 10 2008 Page 1658 of 1658 REJ09B0261 0100 ...
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