AD1985JST Analog Devices Inc, AD1985JST Datasheet - Page 14

• Manufacturer Part Number: AD1985JST
• Description: IC CODEC STEREO 6-DAC 20B 48LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97r

Specifications of AD1985JST

• Rohs Status: RoHS non-compliant
• Data Interface: Serial
• Resolution (bits): 16, 20 b
• Number Of Adcs / Dacs: 2 / 6
• Sigma Delta: No
• Dynamic Range, Adcs / Dacs (db) Typ: 84 / 90
• 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

Reg Num
0x00
AD1985
Reset (Index 0x00)
Note: Writing any value to this register performs a register reset, which causes all registers (except Register 0x74) to revert to their default values. Register 0x74 will only
reset Bits CSWP (D3), LBKS[1:0] (D[6:5]), and OMS (D9). The REGM and serial configuration bits are reset only by an external hardware reset.
Reading this register returns the ID code of the part and a code for the type of 3D stereo enhancement.
ID[9:0] Identify Capability: The ID decodes the capabilities of AD1985 based on the following:
Bit = 1
ID0
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
ID9
SE[4:0] Stereo Enhancement. The AD1985 does not provide hardware 3D stereo enhancement (all bits are 0).
Name
Reset
Function
Dedicated MIC PCM In Channel
Reserved (per AC ’97, 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
D15
X
D14
SE4
D13
SE3
D12
SE2
D11
SE1
Rev. A | Page 14 of 48
D10
SE0
D9
ID9
D8
ID8 ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0 0x0090
D7
D6
D5
D4
AD1985
0
0
0
0
1
0
0
1
0
0
D3
D2
D1
D0
Default