STAC9228 Integrated Device Technology, STAC9228 Datasheet - Page 188

• Manufacturer Part Number: STAC9228
• Description: Theater Quality Eight Channel High Definition Audio Codec With Digital Microphone Interface
• Manufacturer: Integrated Device Technology

IDT™
STAC9227/9228/9229/9230
8-CHANNEL HIGH DEFINITION AUDIO CODEC
6.29. CD Node (NID = 0x12)
8-CHANNEL HIGH DEFINITION AUDIO CODEC
6.29.1. CD WCap
[31:24]
[23:20]
[19:16]
[31:8]
[7:0]
Bit
Bit
Get
Bitfield Name
Bitfield Name
Divider
Rsvd2
Delay
Rsvd
Type
Table 446. PCBEEP Gen
Table 448. CD WCap
Table 447. CD WCap
IDT CONFIDENTIAL
Verb ID
F00
RW
RW
RW
188
R
R
R
R
Command Response Format
Reset
Reset
Command Response Format
0x0
0x0
0x0
0x4
0x0
Command Verb Format
Reserved
Enable internal PC-Beep generation.
Divider is 00h - disables internal PC Beep
generation and enables normal operation of
the CODEC.
Divider is not 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.
Reserved
Widget type = Pin Complex
Number of sample delays through widget
Payload
09
STAC9227/9228/9229/9230V 1.0 MARCH 2007
Description
Description
See bitfield table.
Response
PC AUDIO