參數(shù)資料
型號: AK4571
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: USB I/F Audio CODEC
中文描述: 我的USB /女音頻編解碼器
文件頁數(shù): 8/54頁
文件大?。?/td> 309K
代理商: AK4571
ASAHI KASEI
[AK4571]
MS0153-J-02
2003/3
- 16 -
2.3.
}CNoCAX
AK4571 A
}CNtH“ MICBIASs“ ‰oCAX“d B
o—“d –2.2VA
o—“d—
‘1mA B
}
CNtH“ M
Ӓ
A
}CNoCAX
“d A
’á mCY é K—v
è
B
USBg‰“UNV“ è M…
[^o—“d “
A
AK4571 A
}CNoCAX—p“d“à‘ é
A
“d“d“ é oCAXmCY
—}§
é±
‰”\
B
TXy“hA
o—
Hi-Zó‘è A
VXe ”“d—
—}
B
fJbv“O —p
R“f“T A
‰H”-U–h~
A
MICBIASs“ ’Ri
300’“x j
‰ AiOO‰“h
‘± ‰
B
2.4.
EEPROM
AK4571 A
Device Descriptor, String Descriptor ‘S Descriptor“à” ROM é
A
“O”ROM
“쉔\
B
ê“A
AK4571 A
x“_ ID v_NgID JX^}CY é¤ A
EEPROM I/F
B
JX^}CY ‰”\–
A
1) Device Descriptor(18oCg)
2) String Descriptor (Manufacturer Name, Product Name F
’è50oCg100oCg)
2í— B
g—p‰”\
EEPROM A
Microwire I/F 1K/2K/4K bit EEPROM Bi—á
A
AKM AK93C45A/55A/65Aj
O”EEPROM g—p
é ê
A
EPEN s“ ”H”’è
B
AK4571 A
Zbg ‰
A
EEPROM ’ Device Descriptor[h
B
String Descriptor
A
GET_DESCRITPOR(String) NGXgó A
EEPROMè [h
B
“à” ROM g—p
é ê
i
EPEN = “L”jA CS, SK, EPAOs“ Hi-Zó‘ B
ROM
A
q
”Descriptor ×
"Q‰
B
1Kbit EEPROM êA
eString Descriptor TCY A
52oCgA
50oCg B
2K/4Kbit EEPROM ê
A
eString Descriptor TCY A
100oCgA
100oCg B
ê
àA
String Descriptor TCYè 52oCgi
é
102oCgj
é K—vè
B
PK bit EEPROM g—p
é ê
EPSELs“”L”A
2K/4K bit EEPROM g—p
é ê A
EPSELs“ ”H” ‰
B
EEPROM AhX
f[^ W
A
‰\ ’è
B
1K bit EEPROM
(AK93C45A)
2K/4K bit EEPROM
(AK93C55A/65A)
Device Descriptor (18 bytes)
00h -08h
00h-08h
String Descriptor Lang ID (4 bytes index = 0)
09h –0Ah
09h-0Ah
String Descriptor iManufacturer (52 or 102 bytes: index =1)
0Bh-24h-
0Bh-3Dh
String Descriptor iProduct (52 or 102 bytes: index = 2)
25h-3Eh
3Eh-71h
Table 1 Relationship between EEPROM Address and Descriptor
AK4571 A
O”EEPROMf[^‘ @”\
A
EEPROMg—p
é ê A
—\ f[^‘
EEPROM ” ‘ ‰
B
EEPROM ‘V[P“X
A
EEPROMf[^V[gQ‰
B
A
EEPROM g—p
êi
EPEN=”L”j
A
EEPROM -‘ ‰ i
CS, CK, EPAO Hi-Z j
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