STAC9271 Datasheet, PDF (181/223 Pages) Integrated Device Technology – 10-CHANNEL HIGH DEFINITION AUDIO CODEC

STAC9271/9272/9273/9274
10-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Bit
[7]
[6.:0]
Table 445. PCBEEP OutAmpCap Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd1
R
0x0
Reserved
Offset
R
0x03
0dB-step is programmed with this offset
6.28.4. PCBEEP Gen
Get
Set1
Table 446. PCBEEP Gen Command Verb Format
Verb ID
Payload
F0A
00
70A
See bits [7:0] of bitfield table.
Response
See bitfield table.
0000_0000h
Bit
[31.:8]
[7.:0]
Table 447. PCBEEP Gen Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd
R
0x0
Reserved
Divider
Enable internal PC-Beep generation.
Divider = 00h - disables internal PC Beep
generation and enables normal operation of
the CODEC.
Divider 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),
RW
0x0
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.
IDT™ 10-CHANNEL HIGH DEFINITION AUDIO CODEC
181
IDT CONFIDENTIAL
STAC9271/9272/9273/9274 V 1.0 MARCH2007