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mITX-BW – User Guide, Rev. 1.6
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Table 31: Pin Assignment J2
Pin
Signal
Type
Note
1
GND
PWR
2
MIC1_L_Header
AO
3
GND
PWR
4
MIC1_R_Header
AO
7.10.
SPDIF-OUT Connector (J9)
The digital audio interface (electrical SPDIF-Out) is available through the 2 pin connector J9 and can be used to
implement 6 (5.1) Channel High Definition Audio. Circuit is based on high fidelity 6-channel HD audio codec which is
compatible with Intel HD Audio specification and supports stereo 24-bit resolution and up to 192 kHz sample rate for
DACs/ADCs. The Signal-to-Noise Ratio (SNR) is up to 90 dB.
16/20/24-bit SPDIF TX Outputs supporting 48 K/96 K/44.1 K/88.2 KHz sample rate
Figure 25: SPDIF-OUT Connector J9
Table 32: Pin Assignment J9
Pin
Signal
Type
Note
1
F_SPDIF_OUT
O-3.3
2
GND
PWR
7.11.
Front Panel Connector (FRONTPNL) (
J4
)
Figure 26: Front Panel Connector J4
Table 33: Pin Assignment J4
Pin
Signal
Type
Ioh / Iol
Pull U / D
Note
1
USB_PWR_D2
PWR
-
-
2
USB_PWR_D3
PWR
-
-
3
USBhub_D2-
4
USBhub_D3-
1
2
1
3
5
7
9
11
13
15
17
19
21
23
2
4
6
8
10
12
14
16
18
20
22
24