stac9220d5taea6xr Integrated Device Technology, stac9220d5taea6xr Datasheet - Page 139

• Manufacturer Part Number: stac9220d5taea6xr
• Description: Eight Channel High Definition Audio Codecs
• Manufacturer: Integrated Device Technology

IDT™
8-CHANNEL HIGH DEFINITION AUDIO CODEC
STAC9220
8-CHANNEL HIGH DEFINITION AUDIO CODEC
6.24. CD Node (NID = 0x15)
6.23.4. PCBEEP Gen
6.24.1. CD WCap
[31:8]
[7:0]
Bit
Set1
Get
Bitfield Name
Get
Divider
Rsvd
Table 309. PCBEEP Gen Command Response Format
RW
RW
R
Table 308. PCBEEP Gen Command Verb Format
Verb ID
Table 310. CD WCap Command Verb Format
F0A
70A
Reset
0x0
0x0
Verb ID
F00
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.
139
See bits [7:0] of bitfield table
Payload
00
Payload
09
Description
Reserved
STAC9220
See bitfield table
See bitfield table
0000_0000h
Response
Response
PC AUDIO
V1.0 01/08