92hd99 Integrated Device Technology, 92hd99 Datasheet - Page 26

• Manufacturer Part Number: 92hd99
• Description: Single Chip Pc Audio System Codec+speaker Amplifier+capless Hp+ldo
• Manufacturer: Integrated Device Technology

92HD99
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
IDT CONFIDENTIAL
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
2.15. Digital PC-Beep
NO
NO
This block uses an 8-bit divider value to generate the PC beep from the 48kHz HD Audio Sync
pulse. The digital PC_Beep block generates the beep tone on all Pin Complexes that are currently
configured as outputs. The HD Audio spec states that the beep tone frequency = (48kHz HD Audio
Activity on Pin?
Link Reset
Active?
Figure 8. Analog PC Beep Flow chart
64mS
POR
IDLE
Wait
YES
YES
26
Amplifiers / Enable
Activity on Pin?
Path / Turn off
Inactivity over
Disable Beep
Beep Path
threshold?
Amplifiers
Turn on
YES
NO
NO
YES
NO
Activity on Pin?
PC_Beep
Enabled?
Analog
YES
NO
V 0.91 10/10
NO
92HD99