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參數(shù)資料
| 型號： | 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)： | 41/52頁 |
| 文件大?。?/td> | 373K |
| 代理商： | AD1816A |
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AD1816A
–41–
REV. A
PLUG AND PLAY K E Y AND “ ALT E RNAT E K E Y ” SE QUE NCE S
One additional feature of the AD1816A is an alternate programming method used, for example, if a BIOS wants to assume control
of the AD1816A and present DEVNODES to the OS (rather than having the device participate in Plug and Play enumeration). T he
following technique may be used.
Instead of the normal 32 byte Plug and Play key sequence, an alternate 126 byte key is used. After the 126 byte key, the AD1816A
device will transition to the Plug and Play “sleep” state. It can then be programmed as usual using the standard Plug and Play ports.
After programming, the AD1816A should be sent to the Plug and Play “WFK ” (wait for key) state. Once the AD1816A has seen the
alternate key, it will no longer parse for the Plug and Play key (and therefore never participate in Plug and Play enumeration). It can
be reprogrammed by reissuing the alternate key again.
Both the Plug and Play key and the alternate key are sequences of writes to the Plug and Play address register, 0x279. Below are the
ISA data values of both keys.
T his is the standard Plug and Play sequence:
6a
b5
da
ed
f6
fb
7d
be
b0
58
2c
16
8b
45
a2
d1
T his is the longer, 126-byte alternate key. It is generated by the function:
f[n+1] = (f[n] >> 1)| (((f[n] ^ (f[n] >> 1)) & 0x01) << 6) f[0] = 0x01
01
40
20
10
08
04
02
41
28
14
0a
45
62
71
78
3c
68
34
1a
4d
66
73
39
5c
7c
3e
5f
2f
17
0b
05
42
48
24
12
49
64
32
59
6c
76
7b
3d
5e
6f
37
1b
0d
52
69
74
3a
5d
6e
77
3b
29
54
2a
55
6a
75
7a
7d
df
e8
6f
74
37
3a
1b
9d
0d
ce
86
e7
c3
73
61
39
60
1e
2e
61
36
46
1d
7e
30
4f
57
70
5b
63
4e
7f
18
27
2b
38
2d
31
67
3f
0c
13
15
1c
56
58
33
1f
06
09
4a
0e
6b
2c
19
0f
43
44
65
47
35
16
4c
07
21
22
72
23
5a
4b
26
50
51
79
11
6d
25
53
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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% |
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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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