ad1812 Analog Devices, Inc., ad1812 Datasheet - Page 14

• Manufacturer Part Number: ad1812
• Description: Soundport Controller
• Manufacturer: Analog Devices, Inc.

AD1812
Table VIII. Windows Sound System, Logical Device Number = 0
Register Name Address Type
Activate
I/O Range Check 0x31
I/O Port Base
Address
IRQ Level Select 0x70
IRQ Type Select 0x71
DMA Select 0
DMA Select 1
Register Name Value
Activate
I/O Range Check 0x31
I/O Port Base
Address
IRQ Level Select 0x70
IRQ Type Select 0x71
DMA Select 0
Register Name Value
Activate
I/O Range Check 0x31
I/O Port Base
Address
Table X. Music Synthesizer, Logical Device Number = 2
Table IX. Game Registers, Logical Device Number = 1
0x30
0x60
0x61
0x74
0x75
Address
0x30
0x60
0x61
0x74
Address
0x30
0x60
0x61
Read/Write Activates device.
Read/Write Performs conflict check
Read/Write I/O Base [15:8].
Read/Write I/O Base [7:0].
Read/Write Selects interrupt level.
Read-Only
Read/Write Indicates DMA capture
Read/Write Indicates DMA playback
Type
Read/Write Activates device.
Read/Write Performs conflict check
Read/Write I/O Base [9:8].
Read/Write I/O Base [7:0].
Read/Write Selects interrupt level.
Read-Only
Read/Write Indicates which 8-bit
Type
Read/Write Activates device.
Read/Write Performs conflict check
Read/Write I/O Base [9:8].
Read/Write I/O Base [7:0].
on selected I/O range.
(not user programmable).
channel.
channel. (If DMA 0 is
not used, capture and
playback occurs on
DMA 1.)
Description Value
Active HI, level-sensitive
on selected I/O range.
(not user programmable).
DMA channel.
on selected I/O range.
Description
Active HI, edge-sensitive
Description
–14–
Register Name Value
Activate
I/O Range Check 0x31
I/O Port Base
Address
IRQ Level Select 0x70
IRQ Type Select 0x71
Register Name Value
Activate
I/O Range Check 0x31
I/O Port Base
Address
Register Name Value
Activate
I/O Range Check 0x31
I/O Port Base
Address
IRQ Level Select 0x70
IRQ Type Select 0x71
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.
Table XII. Game Port, Logical Device Number = 4
Table XI. MIDI Port, Logical Device Number = 3
Table XIII. Modem, Logical Device Number = 5
Address
0x30
0x60
0x61
Address
0x30
0x60
0x61
Address
0x30
0x60
0x61
Type
Read/Write Activates device.
Read/Write Performs conflict check
Read/Write I/O Base [9:8].
Read/Write I/O Base [7:0].
Read/Write Selects interrupt level.
Read-Only
Type
Read/Write Activates device.
Read/Write Performs conflict check
Read/Write I/O Base [9:8].
Read/Write I/O Base [7:0].
Type
Read/Write Activates device.
Read/Write Performs conflict check
Read/Write I/O Base [9:8].
Read/Write I/O Base [7:0].
Read/Write Selects interrupt level.
Read Only
on selected I/O range.
(not user programmable).
Description
Active HI, edge-sensitive
on selected I/O range.
tive (not user program-
mable).
on selected I/O range.
Active HI, edge-sensi-
Description
Description
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