92hd001 Integrated Device Technology, 92hd001 Datasheet - Page 115

• Manufacturer Part Number: 92hd001
• Description: Two Channel Hd Audio Codec
• Manufacturer: Integrated Device Technology

IDT™
92HD001
2-CHANNEL HIGH DEFINITION AUDIO CODEC
2-CHANNEL HIGH DEFINITION AUDIO CODEC
5.22.4. PCBeep Gen
[31.:8]
[7.:0]
Bit
Set1
Get
Bitfield Name
Divider
Rsvd
Table 275. PCBeep Gen Command Response Format
Table 274. PCBeep Gen Command Verb Format
Verb ID
F0A
70A
IDT CONFIDENTIAL
RW
RW
R
115
Reset
0x00
See bits [7:0] of bitfield table
0x0
Payload
Reserved
Enable internal PC-Beep generation.
Divider = 00h disables internal PC Beep
generation and enables normal operation of the
CODEC.
Divider not equal to 00h generates the beep
tone on all Pin Complexes that are currently
configured as outputs.
The Azalia spec states that the beep tone
frequency = (48 KHz Azalia SYNC rate) /
(4*Divider), producing tones from 47 Hz to
12 KHz (logarithmic scale). Instead, this part
generates tones with frequency = 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 = 48000 * (513 -
Divider) / 1024, yielding a range of 24 KHz to
12093.75 Hz in steps of 46.875 Hz.
00
92HD001
Description
See bitfield table
0000_0000h
Response
PC AUDIO
V 1.1 01/08