Section 23 Serial Protocol Interface (HSPI)
Rev.1.00 Dec. 13, 2005 Page 855 of 1286
REJ09B0158-0100
Bit Bit
Name
Initial
Value R/W Description
8
TXEM
1
R
Transmit FIFO Empty Flag
This status flag is enabled only to operation in FIFO
mode. The flag is set to 1 when the transmit FIFO is
empty of data to transmit. It is cleared to 0 when more
data is written to the transmit FIFO.
If TXEM = 1 and TEIE = 1 then the interrupt is
generated.
7
RXFU
0
R
Receive FIFO Full Flag
This status flag is enabled only to operation in FIFO
mode. The flag is set to 1 when the receive FIFO is full
of received bytes and cannot accept any more. It is
cleared to 0 when data is read out of the receive FIFO.
If RXFU = 1 and RFIE = 1 then the interrupt is
generated.
6
RXHA
0
R
Receive FIFO Halfway Flag
This status flag is enabled only to operation in FIFO
mode. The flag is set to 1 when the receive FIFO
reaches the halfway point, that is, it has 4 bytes of data
and 4 spaces for more data. This flag is cleared to 0
when the receive data is read from receive FIFO and
the FIFO level becomes under 4 bytes (halfway point).
It remain set to 1 until cleared to 0 regardless of the
subsequent FIFO levels.
If RXHA = 1 and RHIE = 1 then the interrupt is
generated.
5
RXEM
1
R
Receive FIFO Empty Flag
This status flag is enabled only to operation in FIFO
mode. The flag is set to 1 when the receive FIFO is
empty of received data. It is cleared to 0 when more
data is received into to the receive FIFO.
If RXEM = 0 and RNIE = 1 then the interrupt is
generated.
4 RXOO
0 R/W
*
Receive Buffer Overrun Occurred Flag
This status flag is set to 1 when new data has been
received but the previous received data has not been
read from SPRBR. The previously received data will not
be overwritten by the newly received data. The RXOO
flag remain set to 1 until writing a 0 to its bit position.
If RXOO = 1 and ROIE = 1 then the interrupt is
generated.
Содержание SH7780 Series
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Страница 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Страница 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Страница 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Страница 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Страница 1004: ...Section 24 Multimedia Card Interface MMCIF Rev 1 00 Dec 13 2005 Page 954 of 1286 REJ09B0158 0100 ...
Страница 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Страница 1070: ...Section 26 Serial Sound Interface SSI Module Rev 1 00 Dec 13 2005 Page 1020 of 1286 REJ09B0158 0100 ...
Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
Страница 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Страница 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Страница 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Страница 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
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