Section 26 Serial Sound Interface (SSI) Module
Rev.1.00 Dec. 13, 2005 Page 996 of 1286
REJ09B0158-0100
Bit Bit
Name
Initial
Value R/W Description
1
SWNO
1
R
Serial Word Number
The number indicates the current word number.
When TRMD = 0 (Receive Mode):
This bit indicates which system word the current data in
SSIRDR is. Regardless whether the data has been read
out from SSIRDR, when the data in SSIRDR is updated
by transfer from the shift register, this value will change.
When TRMD = 1 (Transmit Mode):
This bit indicates which system word should be written
in SSITDR. When data is copied to the shift register,
regardless whether the data is written in SSITDR, this
value will change.
0
IDST
1
R
Idle Mode Status Flag
Indicates that the serial bus activity has ceased.
This bit is cleared if EN = 1 and the Serial Bus is
currently active.
This bit can be set to 1 automatically under the
following conditions.
SSI = Serial bus master transmitter (SWSD = 1 and
TRMD = 1):
This bit is set to 1 if no more data has been written to
SSITDR and the current system word has been
completed. It can also be set to 1 by clearing the EN bit
after sufficient data has been written to SSITDR to
complete the system word currently being output.
SSI = Serial bus master receiver (SWSD = 1 and TRMD
= 0):
This bit is set to 1 if the EN bit is cleared and the current
system word is completed.
SSI = slave transmitter/ receiver (SWSD = 0):
This bit is set to 1 if the EN bit is cleared and the current
system word is completed.
Note: If the external device stops the serial bus clock
before the current system word is completed
then this bit will never be set.
Note:
*
These bits are readable/writable bits. If writing 0, these bits are initialized, although
writing 1 is ignored.
Summary of Contents for SH7780 Series
Page 2: ...Rev 1 00 Dec 13 2005 Page ii of l ...
Page 28: ...Rev 1 00 Dec 13 2005 Page xxviii of l ...
Page 50: ...Rev 1 00 Dec 13 2005 Page l of l ...
Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Page 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
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Page 1340: ...SH7780 Hardware Manual ...