92hdw74c2 Integrated Device Technology, 92hdw74c2 Datasheet - Page 164

• Manufacturer Part Number: 92hdw74c2
• Description: Six Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

SIX CHANNEL HD AUDIO CODEC
92HDW74C2
SIX CHANNEL HD AUDIO CODEC
6.22. Mixer Node (NID = 1D)
6.21.4. DigBeep Gen
6.22.1. Mixer WCap
6.21.4.1. DigBeep Gen
Get
[31.:8]
[7.:0]
Get
Bit
Rsvd
Divider
Bitfield Name
F0A
F00
Verb ID
Verb ID
R
RW
164
RW
000000
00
Reset
00
09
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
Payload
92HDW74C2
Description
See bitfield table.
See bitfield table.
Response
Response
PC AUDIO
V 1.0 03/08