92HD66C IDT [Integrated Device Technology], 92HD66C Datasheet - Page 23

• Manufacturer Part Number: 92HD66C
• Description: SIX CHANNEL HD AUDIO CODECS
• Manufacturer: IDT [Integrated Device Technology]

92HD66C
SIX CHANNEL HD AUDIO CODECS WITH DUAL CAPLESS HEADPHONE AMPLIFIERS
IDT CONFIDENTIAL
©2011 INTEGRATED DEVICE TECHNOLOGY, INC.
1.
D3cold
Power
enabled
D0-D3
D0-D3
Analog
State
AFG
BEEP
D0
D1
D2
D2
D3
D3
D4
D5
PC_Beep is automatically routed to ports A, B, D, and F after power-on reset while link reset is active and EAPD will be high to enable
an external amplifier. This may be disabled using a vendor specific verb. If the automatic beep path is disabled, beep will still be
supported with EAPD active in link reset if Analog Beep is manually enabled and at least one port is configured as an output before
entering link reset. If the automatic Beep routing is disabled and Analog Beep has not been manually configured before entering link
reset, then the EAPD pin will retain its current state.
0
1
1.
When pin is enabled as Open Drain or CMOS output.
Forced to low when in D2
unless port is enabled as
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
De-Asserted (High)
Forced low in D2 or D3
Asserted (Low)
Asserted (Low)
EAPD Pin value
RESET#
output
or D3
1
PC_BEEP
Enabled
Disabled
Disabled
Disabled
Enabled
Enabled
Analog
Follows description in HD Audio spec. External amplifier is shut down when pin or function
Table 14. EAPD Analog PC_Beep behavior
Power state is ignored if port is enabled as output and port EAPD=1 to allow PC_Beep
-
-
-
-
-
1
Table 15. EAPD Behavior
Port Power
group power state is D2 or D3 independent of value in EAPD bit.
D0-D1
D0-D2
D0-D2
D0-D3
D0-D3
State
-
-
-
-
-
-
23
Active - Pin reflects EAPD bit unless held low by external source.
Active - Pin reflects EAPD bit unless held low by external source.
Active - EAPD Pin high if any port EAPD bit =1 and that port also
Active - EAPD Pin high if any port EAPD bit=1 and that port also
Active high immediately after power on, otherwise the previous
The previous state is retained across FG and link reset events
state is retained across FG and link reset events
support in D2 and D3
Description
Pin forced low to disable external amp
Pin forced low to disable external amp
Pin forced low to disable external amp
Pin forced low to disable external amp
enabled as output.
enabled as output.
Pin Behavior
Pin Hi-Z (off)
V 1.0 2/12
92HD66C