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AD1812JS データシート(PDF) 14 Page - Analog Devices |
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AD1812JS データシート(HTML) 14 Page - Analog Devices |
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14 / 20 page  AD1812 REV. 0 –14– Table VIII. Windows Sound System, Logical Device Number = 0 Register Name Address Type Description Value Activate 0x30 Read/Write Activates device. I/O Range Check 0x31 Read/Write Performs conflict check on selected I/O range. I/O Port Base 0x60 Read/Write I/O Base [15:8]. Address 0x61 Read/Write I/O Base [7:0]. IRQ Level Select 0x70 Read/Write Selects interrupt level. IRQ Type Select 0x71 Read-Only Active HI, level-sensitive (not user programmable). DMA Select 0 0x74 Read/Write Indicates DMA capture channel. DMA Select 1 0x75 Read/Write Indicates DMA playback channel. (If DMA 0 is not used, capture and playback occurs on DMA 1.) Table IX. Game Registers, Logical Device Number = 1 Address Register Name Value Type Description Activate 0x30 Read/Write Activates device. I/O Range Check 0x31 Read/Write Performs conflict check on selected I/O range. I/O Port Base 0x60 Read/Write I/O Base [9:8]. Address 0x61 Read/Write I/O Base [7:0]. IRQ Level Select 0x70 Read/Write Selects interrupt level. IRQ Type Select 0x71 Read-Only Active HI, edge-sensitive (not user programmable). DMA Select 0 0x74 Read/Write Indicates which 8-bit DMA channel. Table X. Music Synthesizer, Logical Device Number = 2 Address Register Name Value Type Description Activate 0x30 Read/Write Activates device. I/O Range Check 0x31 Read/Write Performs conflict check on selected I/O range. I/O Port Base 0x60 Read/Write I/O Base [9:8]. Address 0x61 Read/Write I/O Base [7:0]. Table XI. MIDI Port, Logical Device Number = 3 Address Register Name Value Type Description Activate 0x30 Read/Write Activates device. I/O Range Check 0x31 Read/Write Performs conflict check on selected I/O range. I/O Port Base 0x60 Read/Write I/O Base [9:8]. Address 0x61 Read/Write I/O Base [7:0]. IRQ Level Select 0x70 Read/Write Selects interrupt level. IRQ Type Select 0x71 Read-Only Active HI, edge-sensi- tive (not user program- mable). Table XII. Game Port, Logical Device Number = 4 Address Register Name Value Type Description Activate 0x30 Read/Write Activates device. I/O Range Check 0x31 Read/Write Performs conflict check on selected I/O range. I/O Port Base 0x60 Read/Write I/O Base [9:8]. Address 0x61 Read/Write I/O Base [7:0]. Table XIII. Modem, Logical Device Number = 5 Address Register Name Value Type Description Activate 0x30 Read/Write Activates device. I/O Range Check 0x31 Read/Write Performs conflict check on selected I/O range. I/O Port Base 0x60 Read/Write I/O Base [9:8]. Address 0x61 Read/Write I/O Base [7:0]. IRQ Level Select 0x70 Read/Write Selects interrupt level. IRQ Type Select 0x71 Read Only Active HI, edge-sensitive (not user programmable). Power-Down Control The AD1812 contains two levels of Power-Down control. One level of control is accessed through the embedded codec registers and another is accessed via the PnP vendor defined registers. The codec registers allow sections of the embedded codec to be turned off to conserve power. |
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