92HD202 Datasheet, PDF (145/168 Pages) Integrated Device Technology – 8-CHANNEL HIGH DEFINITION AUDIO CODEC

92HD202
8-CHANNEL HIGH DEFINITION AUDIO CODEC
PC AUDIO
Bit
[15]
[14:8]
[7]
[6:0]
Table 321. PCBEEP AmpCap Command Response Format
Bitfield Name
RW
Reset
Description
Rsvd2
R
0x0
Reserved
NumSteps
R
0x03
Number of steps in the gain range = 4
(-18dB to 0dB)
Rsvd1
R
0x0
Reserved
Offset
R
0x03
0dB-step is programmed with this offset
7.21.4. PCBEEP Gen
Get
Set1
Table 322. PCBEEP Gen Command Verb Format
Verb ID
Payload
F0A
00
70A
See bits [7:0] of bitfield table
Response
See bitfield table
0000_0000h
Table 323. 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)
producing tones from 47 Hz to 12 KHz (logarithmic scale).
[7:0]
Divider
RW 0x0 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.
IDT™ 8-CHANNEL HIGH DEFINITION AUDIO CODEC
145
IDT CONFIDENTIAL
92HD202
REV 1.2 112006