92hd75b Integrated Device Technology, 92hd75b Datasheet - Page 201

• Manufacturer Part Number: 92hd75b
• Description: Four Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
92HD75B
4-CHANNEL HD AUDIO CODECS OPTIMIZED FOR LOW POWER
8.31.4. DigBeep Gen
8.31.3.1. DigBeep OutAmpLeft
8.31.4.1. DigBeep Gen
[6.:2]
[1.:0]
Get
[31.:8]
[7.:0]
Bit
Bit
Rsvd1
Gain
Rsvd
Divider
Bitfield Name
Bitfield Name
F0A
Verb ID
R
RW
R
RW
201
RW
RW
00
0
000000
00
Reset
Reset
00
Reserved.
Amp gain step number (see OutAmp-
Cap parameter pertaining to this wid-
get).
Reserved.
Enable internal PC-Beep generation.
Divider == 00h disables internal PC
Beep generation and enables normal
operation of the codec. Divider != 00h
generates the beep tone on all Pin Com-
plexes that are currently configured as
outputs. The HD Audio spec states that
the beep tone frequency = (48kHz HD
Audio SYNC rate) / (4*Divider), produc-
ing tones from 47 Hz to 12 kHz (logarith-
mic scale). This part can selectively
generate tones with frequency = 48KHz
* (257 - Divider) / 1024, yielding a linear
range from 12kHz to 93.75Hz in steps of
46.875Hz. If the FreqShift bit is set, then
the beep tones generated have frequen-
cy = 48KHz * (513 - Divider) / 1024,
yielding a range of 24kHz to
12093.75Hz in steps of 46.875Hz.
Payload
92HD75B
Description
Description
See bitfield table.
Response
PC AUDIO
V 1.0 01-09