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參數(shù)資料
| 型號： | AD1821 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | Codec |
| 英文描述： | MODIO(Modem over Audio) SoundComm Host Signal Processing Codec(音頻調(diào)制SoundComm型主信號處理編解碼器) |
| 中文描述： | MODIO（調(diào)制解調(diào)器多音頻）SoundComm主機(jī)信號處理編解碼器（音頻調(diào)制SoundComm型主信號處理編解碼器） |
| 文件頁數(shù)： | 20/44頁 |
| 文件大?。?/td> | 284K |
| 代理商： | AD1821 |
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AD1821
–20–
REV. 0
Figure 14 illustrates the flexibility of the DSP Serial Port interface. T his port can monitor or intercept any of the digital streams man-
aged by the AD1821. Any ADC or DAC data stream can be intercepted by the port, shipped to an external DSP or ASIC manipu-
lated, and returned to any DAC summing path or to the ADC.
PLUG AND PLAY
ISA BUS
PARALLEL
INTERFACE
AUDIO
DAC
PGA
AUDIO/
MODEM
ADC
SERIAL PORT INTERFACE
MUSIC
SYNTHESIZER
FORMAT
FIFO
I
2
S SERIAL PORT (0)
A
M
S
A
M
A
M
A
M
I
2
S SERIAL PORT (1)
FORMAT
FIFO
Figure 14. DSP Serial Port
ISA INT E RFACE
AD1821 Chip Registers
T able II, Chip Register Diagram, details the AD1821 direct register set available from the ISA Bus. Prior to any accesses by the host,
the PC I/O addressable ports must be configured using the Plug and Play Resources.
T able II. Chip Register Diagram
Register T ype-Register Name
Register PC I/O Address
Plug and Play
ADDRESS
WRIT E_DAT A
READ_DAT A
0x279
0xA79
Relocatable in Range 0x203 – 0x3FF
Sound System Codec
CODEC REGIST ERS
0x(SS Base+0 – SS Base+15)
Relocatable in Range 0x100 – 0x3FF
See T able V
SoundBlaster Pro
Music0: Address (w), Status (r)
Music0: Data (w)
Music1: Address (w)
Music1: Data (w)
Mixer Address (w)
Mixer Data (w)
Reset (w)
Music0: Address (w)
Music0: Data (w)
Input Data (r)
Status (r), Output Data (w)
Status (r)
0x(SB Base) Relocatable in Range 0x010 – 0x3F0
0x(SB Base+1)
0x(SB Base+2)
0x(SB Base+3)
0x(SB Base+4)
0x(SB Base+5)
0x(SB Base+6 or 7)
0x(SB Base+8)
0x(SB Base+9)
0x(SB Base+A or +B)
0x(SB Base+C or +D)
0x(SB Base+E or +F)
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AD1821JS | 制造商:Analog Devices 功能描述: |
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| AD-1825 | 制造商:UNBRANDED 功能描述:ADAPTOR 18V 250MA |
| AD-1825 | 制造商:UNBRANDED 功能描述:ADAPTOR 18V 250MA |
| AD1826-0013 | 制造商:Analog Devices 功能描述: |
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