AD1986AJSTZ Analog Devices Inc, AD1986AJSTZ Datasheet - Page 21

• Manufacturer Part Number: AD1986AJSTZ
• Description: IC CODEC HD AUDIO AC'97 48LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97, HDr

Specifications of AD1986AJSTZ

• Data Interface: Serial
• Resolution (bits): 20 b
• Number Of Adcs / Dacs: 2 / 6
• Sigma Delta: No
• Dynamic Range, Adcs / Dacs (db) Typ: 85 / 91
• Voltage - Supply, Analog: 4.5 V ~ 5.5 V
• Voltage - Supply, Digital: 2.97 V ~ 3.63 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC ’97 REGISTER DETAILS
RESET (REGISTER 0x00)
Writing any value to this register performs a register reset, which causes all registers to revert to their default values. The serial
configuration (0x74) register will not reset the SLOT16, REGM [2:0], SPOVR, SPAL, SPDZ, and SPLNK. These bits are reset on a hard,
hardware, or power-on reset. The REGM and serial configuration bits are reset only by an external hardware reset.
The AC ’97, Revision 2.3, Page 1 registers codec class/rev (0x601), PCI SVID (0x621), PCI SID (0x641), function information (0x681—per
supported function), and sense register ST [3:0] bits (0x6A1 D [15:13]—per supported function) are reset only on a power-on reset. To
satisfy the AC ’97, Revision 2.3 requirements, these registers/bits are sticky across all software and hardware resets.
Reading this register returns the ID code of the part and a code for the type of 3D stereo enhancement.
Reg
0x00
Table 73.
Register
ID [9:0] (RO)
(Identify
Capability)
SE [4:0] (RO)
(Stereo
Enhancement)
x
MASTER VOLUME (REGISTER 0x02)
This register controls the LINE_OUT, SURROUND, and CENTER/LFE outputs’ mute and volume controls in unison. Each volume sub-
register contains five bits, generating 32 volume steps of −1.5 dB each for a range of 0 dB to −46.5 dB.
The headphone output (HP_OUT) mute and volume are controlled separately by the headphones volume register (0x04).The mono
output (MONO_OUT) mute and volume are controlled separately by the mono volume register (0x06). To control the LINE_OUT,
SURROUND, and CENTER/LFE volumes separately, use the front DAC volume register (0x18) for LINE_OUT; the surround DAC
Volume register (0x38) for SURROUND; and the C/LFE DAC volume register (0x36) for CENTER/LFE.
Reg
0x02
Name
Reset
Name
Master
Volume
D15
x
Function
The ID decodes the capabilities of the AD1986A based on the functions.
Bit
ID0
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
ID9
The AD1986A does not provide hardware 3D stereo enhancement
(all bits are zero).
Reserved.
D15
LM
D14
SE4
D14
x
D13
SE3
Function
Dedicated MIC PCM In channel
Reserved (per AC ’97, Revision 2.3)
Bass and treble control
Simulated stereo (mono to stereo)
Headphone out support
Loudness (bass boost) support
18-bit DAC resolution
20-bit DAC resolution
18-bit ADC resolution
20-bit ADC resolution
D13
x
D12
SE2
D12
LV4
D11
SE1
D11
LV3
D10
SE0
D10
LV2
D9
ID9
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D9
LV1
D8
ID8
LV0
D8
D7
ID7
D7
RM
D6
ID6
D6
x
D5
ID5
D5
x
D4
ID4
D4
RV4
D3
ID3
D3
RV3
ID2
D2
D2
RV2
D1
ID1
RV1
D1
AD1986A
0
0
0
0
1
0
0
1
0
1
Default: 0x00
Default: 0
D0
ID0
D0
RV0
AD1986A
ID [9:0]
Default
0x0290
0x290
Default
0x8080