AD1985JST Analog Devices Inc, AD1985JST Datasheet - Page 27

• 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

Extended Audio ID Register (Index 0x28)
Reg
Num
0x28 Extended
The extended audio ID register identifies which extended audio features are supported. A nonzero extended audio ID value indicates that
one or more of the extended audio features are supported.
AIDVRA
AIDSPDIF
DRA
DSA[1:0]
AIDCDAC
AIDSDAC
AIDLDAC
AMAP
REV[1:0]
AID[1:0]
Name
Audio ID
Variable Rate PCM Audio Support (Read-Only). This bit returns a 1 when read to indicate that variable rate PCM audio is
supported.
SPDIF Support (Read-Only). This bit returns a 1 when read to indicate that SPDIF transmitter is supported (IEC958).
Double Rate Audio (Read-Only). This bit returns a 1 when read to indicate that the optional double rate PCM audio is supported
for PCM L and PCM R.
DAC Slot Assignments. (Read/Write; Reset Default = 00.)
00: DACs 1, 2 = 3 and 4
01: DACs 1, 2 = 7 and 8
10: DACs 1, 2 = 6 and 9
11: DACs 1, 2 = 10 and 11
PCM Center DAC Support (Read-Only). This bit returns a 1 when read to indicate that PCM Center DAC is supported.
PCM Surround DAC Support (Read-Only). This bit returns a 1 when read to indicate that PCM surround left and right DACs are
supported.
PCM LFE DAC Support (Read-Only). This bit returns a 1 when read to indicate that PCM LFE DAC is supported.
Slot DAC Mappings Based on Codec ID (Read-Only). This bit returns a 1 when read to indicate that slot/DAC mappings based on
codec ID is supported.
REV[1:0] = 10 Indicates That Codec Is AC ’97 Revision 2.3 Compliant (Read-Only).
Indicates Codec Configuration (Read-Only).
00 = Primary.
01, 10, 11 = Secondary.
D15 D14 D13 D12 D11 D10 D9
AID1 AID0 X
X
REV1 REV0 AMAP AIDLDAC AIDSDAC AIDCDAC DSA1 DSA0 X AIDSPDIF DRA
D8
DACs 3, 4 = 7 and 8
DACs 3, 4 = 6 and 9
DACs 3, 4 = 10 and 11
DACs 3, 4 = 3 and 4
Rev. A | Page 27 of 48
D7
D6
D5
D4
D3 D2
DACs 5, 6 = 6 and 9
DACs 5, 6 = 10 and 11
DACs 5, 6 = 3 and 4
DACs 5, 6 = 7 and 8
D1
D0
AIDVRA 0xXBC7
AD1985
Default