92hd89d Integrated Device Technology, 92hd89d Datasheet - Page 35

• Manufacturer Part Number: 92hd89d
• Description: Eight Channel Hd Audio Codec Low Power Optimized For Ecr15b And Eup
• Manufacturer: Integrated Device Technology

92HD89D
Eight channel HD Audio codec optimized for low power
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
2.19. GPIO
0
1
2
3
4
5
6
GPIO#
2.19.1. GPIO Pin mapping and shared functions
2.19.2. SPDIF/GPIO Selection
47
37
31
2
4
40
30
48 QFN
2 functions are available on the SPDIFOUT1/GPIO5 pin. To determine which function is enabled, the
order of precedence is followed:
1. If GPIO for that pin is enabled, it will override the SPDIF_OUT function.
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 output, the SPDIF output will be used.
Figure 8. HP EAPD Example to be replaced by single pin for internal amp
pull-down resistor.
40
31
26
-
-
-
-
40 QFN Supply
(MUTE LED ON
SAME BOARD)
UP/DOWN
BUTTONS
MUTE +
DVDD
AVDD
AVDD
DVDD
DVDD
AVDD
AVDD
HP AUDIO CONTROL BLOCK DIAGRAM
YES
SPDIF
SYNC FROM KBC TO OS
SCAN
CODES
In
Table 17. GPIO Pin mapping
YES
YES
SPDIF
KBC
Out
35
SYNC FROM AUDIO GUI TO KBC
YES
EAPD
A_EAPD
A_SD
YES
YES
YES
YES
YES
YES
YES
SPKR_EN#
GPI/O
GPIO_1
SPKR AMP
CODEC
OS
YES
YES
VrefOut
CLK
IN
IN
DMIC
50K
Pull
Up
50K
50K
50K
50K
50K
Down
Pull
V1.0 04/10
92HD89D