AD1888JCP-REEL Analog Devices Inc, AD1888JCP-REEL Datasheet - Page 14

• Manufacturer Part Number: AD1888JCP-REEL
• Description: IC CODEC AUDIO-PC AC'97 48LFCSP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97r

Specifications of AD1888JCP-REEL

• Data Interface: Serial
• Resolution (bits): 16, 20 b
• Number Of Adcs / Dacs: 2 / 6
• Sigma Delta: No
• Dynamic Range, Adcs / Dacs (db) Typ: 80 / 90
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.15 V ~ 3.45 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-VFQFN, CSP Exposed Pad
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AD1888
Table 13. Phone_in Volume Register (Index 0Ch)
Reg
No.
0Ch
All registers not shown and bits containing an X are assumed to be reserved. Refer to Table 15 for examples.
PHV[4:0]
PHM
Table 14. MIC Volume Register (Index 0Eh)
Reg
No.
0Eh
All registers not shown and bits containing an X are assumed to be reserved. Refer to Table 15 for examples.
MCV[4:0]
M20
MCM
Table 15. Volume Settings for Phone and MIC
D15
0
0
0
1
x in the above table is a wild card, and has no effect on the value.
Name
Phone_in
Volume
Name
MIC
Volume
Phone Volume. Allows setting the Phone Volume attenuator in 32 volume levels with 31 steps of 1.5 dB each. The LSB represents
1.5 dB, and the gain range is +12 dB to −34.5 dB. The default value is 0 dB, with the mute bit enabled.
Phone Mute. When this bit is set to 1, the Phone channel is muted.
MIC Volume Gain. Allows setting the MIC Volume 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, with mute enabled.
MIC Gain Boost. This bit allows setting additional MIC gain to increase the microphone sensitivity. The nominal gain boost by
default is 20 dB; however, Bits D0 and D1 (MBG[1:0]) on the miscellaneous control bits register (76h) allow changing the gain
boost to 10 dB or 30 dB, if necessary.
0 = Disabled; Gain = 0 dB
1 = Enabled; Default Gain = 20 dB (see Register 76h, Bits D0, D1)
MIC Mute. When this bit is set to 1, the channel is muted.
WRITE
0 0000
0 1000
1 1111
x xxxx
D15
PHM
D15
MCM
X
D14
D14
X
D13
X
D13
X
D[4:0] Phone (0Ch) and MIC (0Eh)
D12
X
D12
X
READBACK
0 0000
0 1000
1 1111
x xxxx
Control Bits
D11
X
X
D11
D10
X
D10
X
Rev. A | Page 14 of 32
D9
X
D9
X
D8
X
D8
X
D7
X
D7
X
D6
M20
D6
X
D5
X
D5
X
D4
PHV4
D4
MCV4
Function
12 dB Gain
0 dB Gain
−34.5 dB Gain
−∞ dB Gain, Muted
D3
PHV3
D3
MCV3
D2
PHV2
D2
MCV2
PHV1
D1
D1
MCV1
D0
PHV0
D0
MCV0
Default
8008h
Default
8008h