參數(shù)資料
型號： 92HD202XX5PRGXYYX
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 編解碼器
英文描述： 8-CHANNEL HIGH DEFINITION AUDIO CODEC
中文描述： PCM CODEC, PQFP48
封裝： 7 X 7 MM, LEAD FREE, LQFP-48
文件頁數(shù)： 145/168頁
文件大?。?/td> 1265K
代理商： 92HD202XX5PRGXYYX
92HD202
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
IDT
8-CHANNEL HIGH DEFINITION AUDIO CODEC
145
92HD202
REV 1.2 112006
IDT CONFIDENTIAL
7.21.4.
PCBEEP Gen
[15]
Rsvd2
R
0x0
Reserved
[14:8]
NumSteps
R
0x03
Number of steps in the gain range = 4
(-18dB to 0dB)
[7]
Rsvd1
R
0x0
Reserved
[6:0]
Offset
R
0x03
0dB-step is programmed with this offset
Table 322. PCBEEP Gen Command Verb Format
Verb ID
Payload
Response
Get
F0A
00
See bitfield table
Set1
70A
See bits [7:0] of bitfield table
0000_0000h
Table 323. PCBEEP Gen Command Response Format
Bit
Bitfield Name
RW
Reset
Description
[31:8]
Rsvd
R
0x0
Reserved
[7:0]
Divider
RW
0x0
Enable internal PC-Beep generation.
Divider = 00h - disables internal PC Beep generation and
enables normal operation of the CODEC.
When the Divider is not 00h - generates the beep tone on all
Pin Complexes that are currently configured as outputs.
The HD Audio spec states that the beep tone frequency:
F = (48 KHz HD Audio SYNC rate) / (4*Divider)
producing tones from 47 Hz to 12 KHz (logarithmic scale).
This part generates tones with frequency:
F = 48000 * (257 - Divider) / 1024
yielding a linear range from 12 KHz to 93.75 Hz in steps of
46.875 Hz.
If JackSenseVSR[Rate2x], then the beep tones generated
have frequency:
F = 48000 * (513 - Divider) / 1024
yielding a range of 24 KHz to 12093.75 Hz in steps of
46.875 Hz.
Table 321. PCBEEP AmpCap Command Response Format
Bit
Bitfield Name
RW
Reset
Description
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