AD1888JCP-REEL Analog Devices Inc, AD1888JCP-REEL Datasheet - Page 17

• 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

Table 22. Settings for Record Select Control
LS [10:8]
000
001
010
011
100
101
110
111
Table 23. Record Gain Register (Index 1Ch)
Reg
No.
1Ch
1
If MSPLT is not set, Bit D7 has no effect. All registers not shown and bits containing an X are assumed to be reserved. Refer to Table 24 for examples.
RIM[3:0]
IMRM
LIM[3:0]
IM
Table 24. Settings for Record Gain Register
Reg. 76h
MSPLT
0
0
0
1
1
1
1
x is don’t care.
For AC ’97 compatibility, Bit D7 is available only by setting the MSPLT bit, Register 76h. The MSPLT bit enables separate mute bits for the left and right channels.
For AC ’97 compatibility, Bit D7 (RM) is available only by setting the MSPLT bit, Register 76h. The MSPLT bit enables separate mute bits for the left and right channels. If
MSPLT is not set, Bit D7 has no effect.
T
1
Name
Record
Gain
Right Input Mixer Gain Control. Each LSB represents 1.5 dB, 0000 = 0 dB, and the gain range is 0 dB to 22.5 dB.
Right Channel Mute. Once enabled by the MSPLT bit in Register 76h, this bit mutes the right channel separately from the IM bit.
Otherwise, this bit will always read 0 and will have no effect when set to 1.
Left Input Mixer Gain Control. Each LSB represents 1.5 dB, 0000 = 0 dB, and the gain range is 0 dB to 22.5 dB.
Input Mute. When this bit is set to 1, both the left and the right channels are muted, unless the MSPLT bit in Register 76h is set to
1, in which case this mute bit will affect only the left channel.
D15
0
0
1
0
1
1
WRITE
1111
0000
xxxx
1111
xxxx
xxxx
D15
IM
Left Record Source
MIC
CD_L
Muted
AUX_L
LINE_IN_L
Stereo Mix (L)
Mono Mix
PHONE_IN
Left Channel Input Mixer D[11:8]
D14
X
READBACK
1111
0000
xxxx
1111
xxxx
xxxx
D13
X
D12
X
Function
22.5 dB Gain
0 dB Gain
−∞ dB Gain, Muted
22.5 dB Gain
−∞ dB Gain, Left Only Muted
−∞ dB Gain, Left Muted
D11
LIM3
D10
LIM2
Rev. A | Page 17 of 32
D9
LIM1
Record Gain (1Ch)
Control Bits
D8
LIM0
RS [2:0]
000
001
010
011
100
101
110
111
D7
x
x
x
1
1
0
D7
IMRM
1
1
WRITE
1111
0000
xxxx
xxxx
xxxx
1111
D6
X
Right Channel Input Mixer D[3:0]
D5
X
Right Record Source
MIC
CD_R
Muted
AUX_R
LINE_IN_R
Stereo Mix (R)
Mono Mix
PHONE_IN
READBACK
1111
0000
xxxx
xxxx
1111
xxxx
D4
X
D3
RIM3
Function
22.5 dB Gain
0 dB Gain
−∞ dB Gain, Muted
−∞ dB Gain, Right Only Muted
22.5 dB Gain
−∞ dB Gain, Right Muted
D2
RIM2
D1
RIM1
D0
RIM0
AD1888
Default
8000h