AD1981BJSTZ Analog Devices Inc, AD1981BJSTZ Datasheet - Page 17

• Manufacturer Part Number: AD1981BJSTZ
• Description: IC CODEC STEREO MICPREAMP 48LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97r

Specifications of AD1981BJSTZ

• Data Interface: Serial
• Resolution (bits): 16, 20 b
• Number Of Adcs / Dacs: 4 / 2
• Sigma Delta: No
• Dynamic Range, Adcs / Dacs (db) Typ: 85 / 90
• Voltage - Supply, Analog: 4.5 V ~ 5.5 V
• Voltage - Supply, Digital: 3 V ~ 3.47 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Single Supply Voltage (typ): 3.3/5V
• Single Supply Voltage (min): 3/4.5V
• Single Supply Voltage (max): 3.47/5.5V
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CD VOLUME REGISTER
Index 0x12
Reg No.
0x12
1
Table 19.
Bit
RCV [4:0]
RM
LCV [4:0]
CVM
AUX VOLUME REGISTER
Index 0x16
Reg No.
0x16
1
Table 20.
Bit
RAV [4:0]
RM
LAV [4:0]
AM
For AC ‘97 compatibility, Bit D7 (RM) is available only by setting the MSPLT bit, Register 0x76. The MSPLT bit enables separate mute bits for the left and right channels.
If MSPLT is not set, the RM bit has no effect. All registers are not shown, and bits containing an X are assumed to be reserved. Refer to Table 22 for examples.
For AC ’97 compatibility, Bit D7 (RM) is available only by setting the MSPLT bit, Register 0x76. The MSPLT bit enables separate mute bits for the left and right channels.
If MSPLT is not set, the RM bit has no effect. All registers are not shown, and bits containing an X are assumed to be reserved. Refer to
Name
AUX Volume
Name
CD Volume
Mnemonic
Right CD Volume
Right-Channel Mute
Left CD Volume
CD Volume Mute
Mnemonic
Right AUX Volume
Right-Channel Mute
Left AUX Volume
AUX Volume Mute
D15
CVM
D15
AM
D14
X
D14
X
D13
X
D13
X
Function
Allows setting the CD right-channel attenuator in 32 volume levels. The LSB represents 1.5 dB, and the
gain range is +12 dB to −34.5 dB. The default value is 0 dB, mute enabled.
Once enabled by the MSPLT bit in Register 0x76, this bit mutes the right channel separately from the
CVM bit. Otherwise, this bit always reads 0 and has no affect when set to 1.
Allows setting the CD left-channel attenuator in 32 volume levels. The LSB represents 1.5 dB, and the
gain range is +12 dB to −34.5 dB. The default value is 0 dB, mute enabled.
When this bit is set to 1, both the left and right channels are muted, unless the MSPLT bit in
Register 0x76 is set to 1, in which case this mute bit affects only the left channel.
Function
Allows setting the AUX right-channel attenuator in 32 volume levels. The LSB represents 1.5 dB, and
the gain range is +12 dB to −34.5 dB. The default value is 0 dB, mute enabled.
Once enabled by the MSPLT bit in Register 0x76, this bit mutes the right channel separately from the
AM bit. Otherwise, this bit always reads 0 and has no affect when set to 1.
Allows setting the AUX left-channel attenuator in 32 volume levels. The LSB represents 1.5 dB, and
the gain range is +12 dB to −34.5 dB. The default value is 0 dB, mute enabled.
When this bit is set to 1, both the left and right channels are muted, unless the MSPLT bit in
Register 0x76 is set to 1, in which case this mute bit affects only the left channel.
D12
LCV4
D12
LAV4
D11
LCV3
D11
LAV3
D10
LCV2
D1
LAV2
Rev. C | Page 17 of 32
D9
LCV1
D9
LAV1
D8
LCV0
D8
LAV0
D7
RM
D7
RM
1
1
D6
X
D6
X
D5
X
D5
X
D4
RCV4
D4
RAV4
D3
RCV3
D3
RAV3
D2
RCV2
D2
RAV2
Table 22
D1
RCV1
D1
RAV1
for examples.
D0
RCV0
AD1981B
D0
RAV0
Default
0x8808
Default
0x8808