Section 26 Serial Sound Interface (SSI) Module
Rev.1.00 Dec. 13, 2005 Page 992 of 1286
REJ09B0158-0100
26.3.2 Status
Register
(SSISR)
SSISR is configured by status flags that indicate the operating status of the SSI module and bits
that indicate the current channel number and word number.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
0
0
0
1
0
CHNO1 CHNO0 SWNO
IDST
IIRQ
OIRQ
DIRQ
DMRQ
UIRQ
Bit:
Initial value:
R/W:
Bit:
Initial value:
R/W:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
R
R
R
R/W
*
R
R
R
R/W
*
R
R
R
R
R
R
R
0
0
1
1
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit Bit
Name
Initial
Value R/W Description
31 to 29
R Reserved
These bits are always read as an undefined value. The
write value should always be 0.
28
DMRQ
0
R
DMA Request Status Flag
This status flag allows the CPU to see the status of the
DMA request of SSI module.
TRMD = 0 (Receive Mode):
•
If DMRQ = 1 then SSIRDR has unread data.
•
If SSIRDR is read then DMRQ = 0 until there is new
unread data.
TRMD = 1 (Transmit Mode):
•
If DMRQ = 1, SSITDR requests data to be written to
continue the transmission onto the audio serial bus.
•
Once data is written to SSITDR then DMRQ = 0
until further transmit data is requested.
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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