STAC9220 Datasheet, PDF (148/172 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9220/9221/9223
8-CHANNEL HIGH DEFINITION AUDIO CODEC
6.24.4. PCBEEP Gen
Get
Set1
Table 324. PCBEEP Gen Command Verb Format
Verb ID
Payload
F0A
00
70A
See bits [7:0] of bitfield table
PC AUDIO
Response
See bitfield table
0000_0000h
Table 325. PCBEEP Gen Command Response Format
Bit Bitfield Name RW Reset
Description
[31:8]
Rsvd
R
0x0
Reserved
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)
[7:0]
Divider
RW
0x0
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.
6.25. CD Node (NID = 0x15)
6.25.1. CD WCap
Get
Table 326. CD WCap Command Verb Format
Verb ID
Payload
F00
09
Response
See bitfield table
IDT™
8-CHANNEL HIGH DEFINITION AUDIO CODEC
148
STAC9220/9221/9223
V 0.96 102706