TX4939XBG-400 Datasheet, PDF (679/740 Pages) Toshiba Semiconductor – 64-Bit TX System RISC TX49 Family

ACLINK
Toshiba RISC Processor
TX4939
24.4.14. ACLC DMA Request Status Register
This register indicates the AC-link slot data DMA request status.
0xF780
Bit:
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Name:
RESERVED
R/W:
Default:
24
Bit:
15 14 13 12 11 10
9
Name:
RESERVED
8
7
6
5
4
3
2
1
0
MODI MODO Reserv AUDI LFERE CENT SURR AUDO
REQ REQ ed REQ Q REQ REQ REQ
R/W:
Default:
Figure 24-19
R
R
0
0
ACDMASTS Register
R
R
R
R
R
0
0
0
0
0
Bit Mnemonic Field Name
31:8 ⎯
Reserved
7
MODIREQ Modem Data
Reception
Request
Table 24-21 ACDMASTS Register
Description
MODIREQ: Modem Data Reception Request
R 0: No request is pending.
1: Request is pending.
6
MODOREQ Modem Data MODOREQ: Modem Data Transmission Request
Transmission
Request
R 0: No request is pending.
1: Request is pending.
5
⎯
Reserved
4
AUDIREQ Audio Data
AUDIREQ: Audio Data Reception Request
Reception
Request
R 0: No request is pending.
1: Request is pending.
3
LFEREQ
Audio LFE Data LFEREQ: Audio LFE Data Transmission Request
Transmission
Request
R 0: No request is pending.
1: Request is pending.
2
CENTREQ Audio Center CENTREQ: Audio Center Data Transmission Request
Data
Transmission
R 0: No request is pending.
Request
1: Request is pending.
1
SURRREQ Audio Surround SURRREQ: Audio Surround L&R Data Transmission Request
L&R Data
Transmission
R 0: No request is pending.
Request
1: Request is pending.
0
AUDOREQ Audio PCM L&R AUDOREQ: Audio PCM L&R Data Transmission Request
Data
Transmission
R 0: No request is pending.
Request
1: Request is pending.
R/W
⎯
R
R
⎯
R
R
R
R
R
This read-only register shows if any DMA request is pending for each data I/O channel. A DMA request can be pending
after the software deactivates the DMAC channel or disables DMA by ACCTLDIS register bit to complete DMA operation.
In this case, write or read the sample data register (ACAUDODAT and others) to clear the DMA request.
Rev. 3.1 November 1, 2005
24-37