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參數(shù)資料
| 型號(hào)： | AD1816A |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | SoundPort Controller(數(shù)字音頻的聲音端口控制器) |
| 中文描述： | SoundPort控制器（數(shù)字音頻的聲音端口控制器） |
| 文件頁數(shù)： | 47/52頁 |
| 文件大?。?/td> | 373K |
| 代理商： | AD1816A |
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AD1816A
–47–
REV. A
PROGRAMMING E X T E RNAL E E PROMS
Below are the details for programming an external EEPROM or an ADI-supplied PC Program may be used. T he PnP EEPROM can
be written only in the “Alternate K ey State”; this prevents accidental EEPROM erasure when using standard PnP setup. T he proce-
dure for writing an EEPROM is:
1) Enter PnP configuration state and fully reset the part by writing 0x07 to PnP register 0x02. T his step can be eliminated if the part
has not been accessed since power-up, a previous full PnP reset or assertion of the ISA bus RESET signal.
2)Send the alternate initiation key to the PnP address port. EEPROM writes are disabled if the standard PnP key is used.
3)Enter isolation state and write a CSN to enter configuration state. Do not perform any isolation reads.
4)Poll PnP register 0x05 until it equals 0x01 and wait at least 336 microseconds (ensures that EEPROM is idle).
5)Write the second byte of your serial identifier to PnP register 0x20.
6)Read PnP register 0x04.
7)Wait for at least 464 microseconds, plus the EEPROM’s write cycle time (up to 10 ms for a X icor X 24C02).
8)Repeat steps 4 through 7 for each byte in your PnP ROM, starting with the third byte of the serial identifier and ending with the fi-
nal checksum byte. You must then continue to write filler bytes until 512 bytes, minus one more than the number of flag bytes, have
been written. Finally, write the flag byte(s) (described above) and the first byte of the serial identifier.
9) Fully reset the part by writing 0x07 to PnP register 0x02.
T he AD1816 or AD1816A will now act according to the contents of the EEPROM.
NOT E S
Programming will not work if more than one part uses the same alternate initiation key in the system. Parts that use this alternate
initiation key are the AD1816 and AD1816A.
If a 256-byte EEPROM is used, it is not necessary to wait 10 ms after writing bytes 255 to 511, because the EEPROM will ignore
them anyway.
You can skip over bytes that you don’t care to write by just performing a ROM read instead of a ROM write followed by a ROM read.
RE FE RE NCE DE SIGNS AND DE VICE DRIVE RS
Reference designs and device drivers for the AD1816A are available via the Analog Devices Home Page on the World Wide Web at
http://www.analog.com. Reference designs may also be obtained by contacting your local Analog Devices Sales representative or
authorized distributor.
相關(guān)PDF資料 |
PDF描述 |
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| AD1818 | PCI SoundComm DC97 Digital Controller(PCI SoundComm DC97型數(shù)字控制器) |
| AD1819A | AC97 SoundPort Codec(AC97型聲音端口信號(hào)編解碼器) |
| AD1819BJST | AC’97 SoundPort Codec |
| AD1819 | ECONOLINE: RD & RC - Dual Output from a Single Input Rail- 1kVDC & 2kVDC Isolation- Power Sharing on Output- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 86% |
| AD1819B | AC’97 SoundPort Codec |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD1816AJS | 制造商:AD 制造商全稱:Analog Devices 功能描述:SoundPort Controller |
| ad1816ajs-eeprom | 制造商:Rochester Electronics LLC 功能描述:AD1816A SOUND PORT CONTRO - Bulk 制造商:Analog Devices 功能描述: |
| AD1816AJST | 制造商:AD 制造商全稱:Analog Devices 功能描述:SoundPort Controller |
| ad1816js3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述: |
| AD18-182 | 制造商:Thomas & Betts 功能描述:Terminal; 22 to 18 AWG; Brass; Non-Insulated; Tin Plated; UL 94V-2 制造商:Thomas & Betts 功能描述:DISCONNECTFEMALE 制造商:Thomas & Betts 功能描述:Quick Disconnect Terminal 18-22AWG F 21.08mm 5.84mm Tin |
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