22. Serial I/O with FIFO (SIOF)
Rev.1.00 Jan. 10, 2008 Page 1114 of 1658
REJ09B0261-0100
Bit Bit
Name
Initial
Value R/W Description
9 RFFUL
0 R
Receive
FIFO
Full
0: Receive FIFO not full
1: Receive FIFO full
•
This bit is valid when the RXE bit in SICTR is 1.
•
This bit indicates the state of the SIOF. If SIRDR is
read from, this bit is automatically cleared to 0.
•
To enable the issuance of this interrupt source, set
the RFFULE bit in SIIER to 1.
8 RDREQ
0 R
Receive
Data
Transfer
Request
0: Indicates that the size of valid space in the receive
FIFO does not exceed the size specified by the
RFWM bit in SIFCTR.
1: Indicates that the size of valid space in the receive
FIFO exceeds the size specified by the RFWM bit in
SIFCTR.
A receive data transfer request is issued when the valid
space in the receive FIFO exceeds the value specified
by the RFWM bit in SIFCTR.
When using receive data transfer through the DMAC,
this bit is always cleared by one DMAC access. After
DMAC access, when conditions for setting this bit are
satisfied, this bit is set to 1 again by the SIOF.
•
This bit is valid when the RXE bit in SICTR is 1.
•
This bit indicates a state; if the size of valid data
space in the receive FIFO is less than the size
specified by the RFWM bit in SIFCTR, this bit is
automatically cleared to 0.
•
To enable the issuance of this interrupt source, set
the RDREQE bit in SIIER to 1.
7, 6
⎯
All
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
Содержание SH7781
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Страница 376: ...10 Interrupt Controller INTC Rev 1 00 Jan 10 2008 Page 346 of 1658 REJ09B0261 0100 ...
Страница 694: ...13 PCI Controller PCIC Rev 1 00 Jan 10 2008 Page 664 of 1658 REJ09B0261 0100 ...
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 ...
Страница 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
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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