92HD91 Datasheet, PDF (16/298 Pages) Integrated Device Technology – SINGLE CHIP PC AUDIO SYSTEM

92HD91
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Per the HDA015-B , the SPDIF outputs support the ability to provide clocking information even when
no stream is selected for the converter, or when in a low power state. Also, the SPDIF output ports
support port presence detect.
SPDIF Outputs are outlined in tables below.
AFG Power
State
RESET#
Output
Enable
Converter
Dig
Enable
Stream
ID
Keep
Alive
Enab
le
Pin Behavior
D0-D3
Asserted (Low)
-
-
-
-
Hi-Z (internal pull-down enabled) immediately after
power on, otherwise the previous state is retained.
De-Asserted (High) Disabled -
-
-
Hi-Z (internal pull-down enabled)
De-Asserted (High) Enabled Disabled -
-
Active - Pin drives 0 (internal pull-down NA)
D0
De-Asserted (High) Enabled Enabled 0
-
Active - Pin drives SPDIF-format, but data is zeroes
(internal pull-down NA)
De-Asserted (High) Enabled Enabled 1-15
-
Active - Pin drives SPDIFOut0 data (internal pull-down
NA)
De-Asserted (High) Disabled -
-
-
Hi-Z (internal pull-down enabled)
D1-D2
-
-
De-Asserted (High) Enabled
Enabled -
0
Active - Pin drives 0 (internal pull-down NA)
1
Active - Pin drives SPDIF-format, but data is zeroes
(internal pull-down NA)
-
-
-
0
Hi-Z (internal pull-down enabled)
D3
De-Asserted (High) ^{Disabled -}
-
1
Hi-Z (internal pull-down enabled)
Enabled Enabled -
1
Active - Pin drives SPDIF-format, but data is zeroes
(internal pull-down NA)
D3cold
-
-
-
-
-
Hi-Z (internal pull-down enabled)
D4
-
-
-
-
-
Hi-Z (port off)
D5
-
-
-
-
-
Hi-Z (port off)
Table 4. SPDIF OUT 0 Behavior
AFG
Power
State
RESET#
D0-D3 Asserted (Low)
D0-D3
D0-D3
De-Asserted
(High)
De-Asserted
(High)
GPIO0
Enable
Input
Enable
Output
Enable
Convert
er Dig
En
Strea
m ID
Keep
Alive
En
Pin Behavior
Hi-Z (internal pull-down enabled)
-
-
-
-
-
-
immediately after power on, otherwise
the previous state is retained.
Enabled -
-
-
-
-
Active - Pin reflects GPIO0 configuration
(internal pull-down enabled)
Disabled Enabled Disabled -
-
-
Pin functions as digital mic input
(internal pull-down enabled)
Table 5. SPDIF OUT 1 Behavior
IDT™ CONFIDENTIAL
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©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
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92HD91