HUAWEI MC509 CDMA LGA Module |
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Hardware Guide | Description of the Application Interfaces |
Figure 3-13 Circuit diagram of the interface of the second audio channel
SPKR_OUT_P
SPKR_OUT_N
Module
(DCE)
ferrite bead
ferrite bead
1nF
1nF
1nF
ESD protection
ferrite bead
+
_
Speaker
MIC2_P
MIC2_N
1nF |
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1nF 1nF
protection | + |
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ESD | _ |
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MIC
It is recommended that a TVS be used on the related interface, to prevent electrostatic discharge and protect integrated circuit (IC) components.
Data only does not support the voice function.
3.8.2Digital Audio
The MC509 provides one digital audio channels (Data only doesn’t support the voice function). Table
Table |
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Pin | Pin Name | I/O | Description | DC Characteristics (V) | ||
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5 | PCM_SYNC | O | PCM interface sync | 2.6 | 2.9 | |
6 | PCM_DIN | I | PCM I/F data in | 2.6 | 2.9 |
7 | PCM_DOU | O | PCM I/F data out | 2.6 | 2.9 | |
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8 | PCM_CLK | O | PCM interface clock | 2.6 | 2.9 |
The MC509 PCM interface enables communication with an external codec to support linear and
Issue 01 | Huawei Proprietary and Confidential | 39 | |
Copyright © Huawei Technologies Co., Ltd. | |||
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