參數(shù)資料
型號(hào)： LM4560VJD
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 消費(fèi)家電
英文描述： Advanced PCI Audio Accelerator
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： PLASTIC, TQFP-100
文件頁數(shù)： 44/54頁
文件大小： 380K
代理商： LM4560VJD
4.0 Functional Description
(Continued)
4.2.1.13 8/16-Bit Audio Dma Operation Control Command Dxh
4.2.1.13.1 Command D0h
Function: Pause Non-Bx Type Command DMA Transfer
The DMA request is stopped after this command. Internal FIFO will continue running until the FIFO is empty (playback) or full
(record). The DMA request will resume after command D4h or any of new DMA command is captured by SB ESP. This command
is no use to Bx type command DMA transfer.
4.2.1.13.2 Command D1h
Function: Set Digital Audio On Status Flag for D8 Command
4.2.1.13.3 Command D3h
Function: Set Digital Audio Off Status Flag for D8 Command
Digital audio status flag is off after system reset or SB ESP_Reset().
4.2.1.13.4 Command D4h
Function: Resume Non-Bx Type Command DMA Transfer
The DMArequest that is suspended by the command D0h is enabled again. The internal FIFO is working as usual. This command
is no use to Bx type command DMA transfer.
4.2.1.13.5 Command D5h
Function: Pause Bx Type Command DMA Transfer
The DMA request is stopped after this command. Internal FIFO will continue running until the FIFO is empty (playback) or full
(record). The DMA request will resume after command D6h or any of new DMA command is captured by SB ESP. This command
is no use to non-Bx type command DMA transfer.
4.2.1.13.6 Command D6h
Function: Resume Bx Type Command DMA Transfer
The DMArequest that is suspended by the command D5h is enabled again. The internal FIFO is working as usual. This command
is no use to non-Bx type command DMA transfer.
4.2.1.13.7 Command D8h
Function: Get Digital Audio Status Flag
4.2.1.13.8 Command D9h
Function: Exit Current Bx Type Command Continuous DMA Transfer
Causes the SB ESP to finish the current block, then cease transferring. Use this command while the DMA is transferring the last
block of audio data from/to the SB ESP. SB ESP-Reset() or any of new DMA command should reset this flag.
4.2.1.13.9 Command DAh
Function: Exit Current Non-Bx Type Command Continuous DMA Transfer
Causes the SB ESP to finish the current block, then cease transferring. Use this command while the DMA is transferring the last
block of audio data from/to the SB ESP. SB ESP-Reset() or any of new DMA command should reset this flag.
4.2.1.14 SB ESP Version and Diagnostic Command Exh
4.2.1.14.1 Command E0h
Function: SB ESP Read/Write Diagnostic Test
4.2.1.14.2 Command E1h
Function: Get SB ESP Version Number
SB PRO Version 3.02
SB16 Version 4.02
Major Version = ASR5 (Default 04h)
Minor Version = ASR6 (Default 02h)
4.2.1.14.3 Command E2h
Function: DMA testing
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