ad1848 Analog Devices, Inc., ad1848 Datasheet - Page 16

• Manufacturer Part Number: ad1848
• Description: Parallel-port 16-bit Soundport Stereo Codec
• Manufacturer: Analog Devices, Inc.

AD1848K
Left Auxiliary #2 Input Control (IXA3:0 = 4)
LX2A4:0
res
LMX2
This register’s initial state after reset is “1000 0000 (80h).”
Right Auxiliary #2 Input Control (IXA3:0 = 5)
RX2A4:0
res
RMX2
This register’s initial state after reset is “1000 0000 (80h).”
Left DAC Control (IXA3:0 = 6)
LDA5:0
res
LDM
This register’s initial state after reset is “1x00 0000.”
Right DAC Control (IXA3:0 = 7)
RDA5:0
res
RDM
This register’s initial state after reset is “1x00 0000.”
IXA3:0
IXA3:0
IXA3:0
IXA3:0
4
5
6
7
Left Auxiliary Input #2 Attenuate Select. The least significant bit of this gain/attenuate select represents –1.5 dB.
LX2A4:0 = 0 produces a +12 dB gain. LX2A4:0 = “01000” (8 decimal) produces 0 dB gain.
Maximum attenuation is –34.5 dB.
Reserved for future expansion. Always write zeros to these bits.
Left Auxiliary #2 Mute. This bit, when set to 1, will mute the left channel of the Auxiliary #2 input source.
This bit powers up set.
Right Auxiliary Input #1 Attenuate Select. The least significant bit of this gain/attenuate select represents –1.5 dB.
RX2A4:0 = 0 produces a +12 dB gain. RX2A4:0 = “01000” (8 decimal) produces 0 dB gain.
Maximum attenuation is –34.5 dB.
Reserved for future expansion. Always write zeros to these bits.
Right Auxiliary #2 Mute. This bit, when set, will mute the right channel of the Auxiliary #2 input source.
This bit powers up set.
Left DAC Attenuate Select. The least significant bit of this attenuate select represents –1.5 dB. LDA5:0 = 0 produces a
0 dB attenuation. Maximum attenuation is –94.5 dB.
Reserved for future expansion. Always write a zero to this bit.
Left DAC Mute. This bit, when set to 1, will mute the left DAC output. Auxiliary inputs are muted independently with
the Left Auxiliary Input Control Registers. This bit powers up set.
Right DAC Attenuate Select. The least significant bit of this attenuate select represents –1.5 dB. RDA5:0 = 0 produces
0 dB attenuation. Maximum attenuation is –94.5 dB.
Reserved for future expansion. Always write a zero to this bit.
Right DAC Mute. This bit, when set to 1, will mute the right DAC output. Auxiliary inputs are muted independently
with the Right Auxiliary Input Control Registers. This bit powers up set.
Data 7
Data 7
Data 7
Data 7
LMX2
RMX2
LDM
RDM
Data 6
Data 6
Data 6
Data 6
res
res
res
res
Data 5
Data 5
Data 5
Data 5
LDA5
RDA5
res
res
LX2A4
RX2A4
Data 4
Data 4
Data 4
Data 4
LDA4
RDA4
–16–
LX2A3
RX2A3
Data 3
Data 3
Data 3
Data 3
LDA3
RDA3
LX2A2
RX2A2
Data 2
Data 2
Data 2
Data 2
LDA2
RDA2
RX2A1
LX2A1
Data 1
Data 1
Data 1
Data 1
LDA1
RDA1
LX2A0
RX2A0
Data 0
Data 0
Data 0
Data 0
LDA0
RDA0
REV. 0