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參數(shù)資料
| 型號： | AD1981BLJSTZ-REEL2 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | Codec |
| 英文描述： | AC ’97 SoundMAX㈢ Codec |
| 中文描述： | ㈢交流\u0026#39;97 SoundMAX編解碼器 |
| 文件頁數(shù)： | 18/28頁 |
| 文件大小： | 215K |
| 代理商： | AD1981BLJSTZ-REEL2 |
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REV. 0
AD1981BL
–18–
VRAS
Variable Rate PCM Audio Support (Read-Only). This bit returns a 1 when Read To indicates that the variable rate
PCM audio is supported.
SPDIF
SPDIF Support (Read-Only). This bit returns a 1 when Read To indicates that the SPDIF transmitter is supported
(IEC958).
This bit is also used to validate that the SPDIF transmitter output is actually enabled. The SPDIF bit is allowed to be
set high only if the SPDIF pin (48) is pulled down at power-up, enabling the codec transmitter logic. If the SPDIF
pin is floating or pulled high at power-up, the transmitter logic is disabled; therefore, this bit returns a low, indicat-
ing that the SPDIF transmitter is not available. This bit must always be read back to verify that the SPDIF transmitter
is actually enabled.
DSA[1,0]
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 Reserved.
AMAP
Slot DAC Mappings Based on Codec ID (Read-Only). This bit returns a 1 when read to indicate that slot/DAC
mappings based on the codec ID are supported.
REVC[1,0]
REVC[1,0] = 01 indicates codec is AC ’97 revision 2.2 compliant (Read-Only).
IDC[1:0]
Indicates Codec Configuration (Read-Only).
00 = Primary.
01, 10, 11 = Secondary.
Extended Audio ID Register (Index 28h)
Reg
No. Name
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
28h Ext’d Audio ID
IDC1 IDC0
X
X
REVC1
REVC0
AMAP
X
X
X
DSA1
DSA0
X
SPDIF X
VRAS
X605h
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 ex-
tended audio features are supported. All registers not shown, and bits containing an X are assumed to be reserved.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD1981HD | HD Audio SoundMAX Codec |
| AD1981HDJSTZ | HD Audio SoundMAX Codec |
| AD1981HDJSTZ-REEL | HD Audio SoundMAX Codec |
| AD1983 | HD Audio SoundMAX Codec |
| AD1983JCPZ | HD Audio SoundMAX Codec |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD1981BWBSTZ | 制造商:Analog Devices 功能描述: |
| AD1981BWBSTZ-REEL | 制造商:Analog Devices 功能描述:ANAAD1981BWBSTZ-REEL AC'97 SOUNDMAX CODE |
| AD1981HD | 制造商:AD 制造商全稱:Analog Devices 功能描述:HD Audio SoundMAX Codec |
| AD1981HDJSTZ | 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 20-Bit/24-Bit 48-Pin LQFP |
| AD1981HDJSTZ-REEL | 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 20-Bit/24-Bit 48-Pin LQFP T/R |
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