92hd88b4x5ndg Integrated Device Technology, 92hd88b4x5ndg Datasheet - Page 18

• Manufacturer Part Number: 92hd88b4x5ndg
• Description: Single Chip Pc Audio System Codec+mono Speaker Amplifier+capless Hp+ldo
• Manufacturer: Integrated Device Technology

IDT PROPRIETARY / IDT
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
92HD88
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
D3
D3cold
D4
D5
2.2.
2.3.
Power
State
AFG
Mono Output
Analog Mixer
De-Asserted
(High)
-
-
-
RESET#
CONFIDENTIAL
The MONO Output derives its input from the output of the summing node after the mono mux. The
following sources are available for the mono pin:
DAC0 Output: When selected (by using port connection list), both DAC0 outputs are summed
together.
DAC1 Output: When selected (by using port connection list), both DAC1 outputs are summed
together.
Mixer Output: When selected (by using port connection list), both mixer outputs are summed
together.
The stereo inputs are scaled by -6dB and then summed to provide an output that is the average of
the two inputs. The full scale output at mono out is designed to be about 0dBV. It is not possible to
adjust to a +3dBV output level.
The mixer supports independent gain (-34.5 to +12dB in 1.5dB steps) on each input as well as inde-
pendent mutes on each input. The following inputs are available:
•
•
•
Port A
Port C
Port F
Disabled Disabled
Disabled Disabled -
-
-
Enable
GPIO0
-
-
Enable
Input
Table 4. SPDIF OUT 1 Behavior
Disabled -
Enabled
-
-
Output
Enable
18
Disabled -
Enabled
-
-
-
Converte
r Dig En
-
-
-
-
-
-
Strea
m ID
-
-
0
1
-
-
-
Keep
Alive
En
92HD88
Hi-Z (internal pull-down
enabled)
Hi-Z (internal pull-down
enabled)
Hi-Z (internal pull-down
enabled)
Active - Pin drives
SPDIF-format, but data is
zeroes (internal pull-down
NA)
Hi-Z (internal pull-down
enabled)
Hi-Z (port off)
Hi-Z (port off)
Pin Behavior
PC AUDIO
V 0.94 07/11