Open-Q™ 845 µSOM Development Kit User Guide
Version 1.0
© Copyright Intrinsyc Technologies Corporation
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Pi
n
No
Signal
Description
Pi
n
No
Signal
Description
13
GPIO66_CODEC_S
PI_MOSI
CPU GPIO66 – can be configured as
PRI_MI2S_WS (see Note 1 below)
14
LN_BB_CLK
2_WCD_CO
N
µSOM PMIC baseband clock
output (see Note 1 below)
15
GPIO67_CODEC_S
PI_CLK
CPU GPIO67 – can be configured as
PRI_MI2S_DATA0 (see Note 1
below)
16
No net
17
GPIO68_CODEC_S
PI_CS_N
CPU GPIO68 – can be configured as
PRI_MI2S_DATA1 (see Note 1
below)
18
CDC_IN5_P
Codec Input 5 Positive
19
GND
Ground
20
CDC_IN5_N
Codec Input 5 Negative
21
GPIO69_SPKR_I2S
_SCK
CPU GPIO69 – can be configured as
SPKR_I2S_SCK
22
GND
Ground
23
GPIO70_CODEC_S
LIMBUS_CLK_CO
N
CPU GPIO70 – can be configured as
SPKR_I2S_CLK (see Note 1 below)
24
No net
25
GPIO71_CODEC_S
LIMBUS_DATA0_
CON
CPU GPIO71 – can be configured as
SPKR_I2S_DATA_OUT (see Note 1
below)
26
CDC_MIC_B
IAS1
Microphone Bias 1
27
GPIO72_CODEC_S
LIMBUS_DATA1_
CON
CPU GPIO72 – can be configured as
SPKR_I2S_WS (see Note 1 below)
28
CDC_LDO_
H
WCD9340 Audio Codec LDO
output
29
GND
Ground
30
No net
31
MB_VREG_1P8
Carrier board switching regulator
+1.8V
32
GND
Ground
33
MB_VREG_3P3
Carrier board switching regulator
+3.3V
34
GPIO54_CO
DEC_INT1_
CON
CPU GPIO54 (see Note 1 below)
35
MB_VREG_5P0
Carrier board switching regulator
+5.0V
36
GPIO53_CO
DEC_INT2_
CON
CPU GPIO53 (see Note 1 below)
37
DC_IN_12V
Voltage from DC Power Input
+12.0V
38
No net
39
GND
Ground
40
MB_VREG_1
P8
Carrier board switching regulator
+1.8V
1.
Population option changes are necessary in order to use this signal. See the carrier board
schematic (R-3) for more details.
For more details regarding configuring the GPIOs on this header, refer to the Open-Q 845 Software
Release Notes to determine feature support in the latest software release.
3.7.21
Audio Headset Jack J1800 (8)
In addition to the audio expansion headers, the Open-Q 845 µSOM Development Kit also includes a
standard 3.5mm audio headset jack J1800, which provides connection to headphone, microphone
input and headset detection circuits. See item 8 in Figure 1 for the carrier board location of this
headset jack.
3.7.22
WLAN / BT Antenna Connections (13, 14)
The Open-Q 845 µSOM Development Kit WLAN/BT functionality is based on Qualcomm
WCN3990 chipset. It provides WLAN/Bluetooth in 2x2 MIMO with two spatial streams
