ad1812 Analog Devices, Inc., ad1812 Datasheet - Page 15

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

REV. 0
Mode
Total Power Down
Standby
Mixer Power Down
Mixer Only
ADC Power Down
DAC Power Down
The registers found in the vendor defined PnP space take prece-
dence over any other power-down mode. You can shut down
the embedded DSP or the entire codec by writing to these
registers.
Mode
Total Power Down
CODEC CONTROL REGISTER ARCHITECTURE
Upon Plug and Play initialization, a base address is assigned for
the Windows Sound System Compatible logical device embed-
ded in the AD1812. The AD1812 accepts both data and con-
trol information through the 16-bit interface.
Windows Sound System Address
Base + 0
Base + 2
Base + 4
Base + 6
Table XIV. Codec Power-Down Modes
Table XVI. Codec Direct Register Map
Table XV. PnP Power-Down Modes
Powered-Down Blocks
ADC, DAC, Mixer, Reference
ADC, DAC, Mixer
DAC, Mixer
ADC, DAC
ADC
DAC
Powered-Down Blocks
DSP and SoundPort Codec
Register Name
Index Address Register
Indexed Data Register
Status Register
PIO Data Registers
–15–
A write to or a read from the Indexed Data Register will access
the Indirect Register which is selected by the value most recently
written to the Index Address Register. The Status Register and
the PIO Data Register are always accessible directly, without in-
dexing. The 32 Indirect Registers are shown in Table XVII.
Windows Sound System Codec
Indexed Register
Left Input Control
Right Input Control
Left Aux #1 Input Control
Right Aux #1 Input Control
Left Aux #2 Input Control
Right Aux #2 Input Control
Left Output Control
Right Output Control
Clock and Data Format
Interface Configuration
Pin Control
Test and Initialization
Miscellaneous Information
Digital Mix/Attenuation
Upper Base Count
Lower Base Count
Alternate Feature Enable/Left
MIC Mix Enable/Right MIC
Left Line Gain, Attenuate,
Right Line Gain, Attenuate,
Lower Timer
Upper Timer
Upper Frequency Select
Lower Frequency Select
External Status
Revision ID
Mono Control
Power-Down Control
Capture Data Format Control
Total Power-Down
Capture Upper Base Count
Capture Lower Base Count
MIC Input Control
Input Control
Mute, Mix
Mute, Mix
Table XVII. Codec Indirect Register Map
Index
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
AD1812
Reset State
0x80
0x80
0x9F
0x9F
0x9F
0xBF
0xBF
0x08
0x00
0x05
0x20
0xCA
0x00
0x00
0x00
0x80
0x00
0x9F
0x9F
0x00
0x00
0x2A
0xF8
0x30
0x80
0xC0
0x08
0x50
0x00
0x00
0x00