92hd83 Integrated Device Technology, 92hd83 Datasheet - Page 33

• Manufacturer Part Number: 92hd83
• Description: Single Chip Pc Audio System Codec+speaker Amplifier+capless Hp+ldo
• Manufacturer: Integrated Device Technology

SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
92HD83
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
2.19. GPIO
GPIO
0
1
2
#
2.19.1. GPIO Pin mapping and shared functions
2.19.2. SPDIF/Digital Microphone/GPIO Selection
2.19.3. Digital Microphone/GPIO Selection
46
2
4
Pin
Supply
DVDD
DVDD
DVDD
3 functions are available on the DMIC_1/GPIO0/SPDIFOUT1 pin (pin 46). To determine which func-
tion is enabled, the order of precedence is followed:
1. If the GPIOs are enabled, they override both SPDIF_OUT and Digital Mics
2. If the GPIOs are not enabled through the AFG, then at reset, the pin is pulled low by an internal
3. If the port is enabled as an input, the digital microphones will be used.
4. If the port is enabled as an output, the SPDIF output will be used.
5. In the event that the port is enabled as an input and an output, the port will be an output and the
2 functions are available on the DMIC_CLK/GPIO1 (pin 2) and the DMIC_0/GPIO2 (pin 4) pins. To
determine which function is enabled, the order of precedence is followed:
1. If GPIOs are not enabled through the AFG, then at reset, pins 2 and 4 are pulled low by an inter-
2. If the GPIO 1 is enabled, the 2 DMIC pins become mute (unless programmed for GPIO or SPDIF
3. If GPIO2 is enabled through the AFG, pin 4 becomes a GPIO and is pulled low by an internal
4. If the port is enabled as an input, the digital microphones will be used.
5. If the port is not enabled as an input or if the pin is configured as a GPIO, the digital microphone
pull-down resistor.
Digital Mic path will be mute.
nal pull-down resistor.
use) and pin 2 becomes an internal pull-down.
pull-down resistor.
path will be mute.
SPDIF
In
YES
SPDIF
Out
YES
YES
YES
GPI/O
Table 14. GPIO Pin Mapping
GPI
GPO
33
VrefOut
IN
CLK
IN
DMIC
92HD83
VOL
Pull
Up
50K
50K
50K
Down
PC AUDIO
Pull
V 0.96 01/09