92HD87B2X5NDGXTBX IDT, Integrated Device Technology Inc, 92HD87B2X5NDGXTBX Datasheet - Page 25
92HD87B2X5NDGXTBX
Manufacturer Part Number
92HD87B2X5NDGXTBX
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.92HD87B2X5NDGXTBX.pdf
(215 pages)
Specifications of 92HD87B2X5NDGXTBX
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IDT PROPRIETARY / IDT
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
1.
AFG
Power
State
D0-D3
D0
D1
D2
D2
D3
D3
D3cold
D4
D5
92HD87
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Override
BEEP
When pin is enabled as Open Drain or CMOS output.
0
1
RESET#
Asserted (Low)
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 to low when in D2
Always follows EAPD bit
EAPD Pin value
CONFIDENTIAL
or D3
1
Override
-
-
Disabled
Enabled
Disabled
Enabled
-
-
BEEP
-
-
Power state is ignored and EAPD pin follows EAPD bit value only to allow PC_Beep support
Follows description in HD Audio spec. External amplifier is shut down when pin or function
Table 8. EAPD Low Power Behavior
EAPD
Power State
-
-
D0-D1
D0-D2
D0-D2
D0-D3
D0-D3
-
-
-
Table 9. EAPD Behavior
group power state is D2 or D3 independent of value in EAPD bit.
25
Pin Behavior
Active low immediately after power on, otherwise the
previous state is retained across FG and link reset events
Active - Pin reflects EAPD bit unless held low by external
source.
Active - Pin reflects EAPD bit unless held low by external
source.
Pin forced low to disable external amp
Active - Pin reflects EAPD bit unless held low by external
source.
Pin forced low to disable external amp
Active - Pin reflects EAPD bit unless held low by external
source.
Pin forced low to disable external amp
Pin forced low to disable external amp
Pin Hi-Z (off)
in D2 and D3
Description
92HD87
PC AUDIO
V 0.95 10/10
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