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參數(shù)資料
| 型號(hào)： | LMX9820A |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Bluetooth Serial Port Module |
| 中文描述： | 藍(lán)牙串行端口模塊 |
| 文件頁數(shù)： | 16/44頁 |
| 文件大?。?/td> | 579K |
| 代理商： | LMX9820A |
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16
Revision 1.0
L
7.0 Functional Description
(Continued)
7.5 AUDIO PORT
Advanced Audio Interface
The Advanced Audio Interface (AAI) is an advanced ver-
sion of the Synchronous Serial Interface (SSI) that pro-
vides a full-duplex communications port to a variety of
industry-standard 13/14/15/16-bit linear or 8-bit log PCM
codecs, DSPs, and other serial audio devices.
The LMX9820A allows the support for one codec. The
firmware selects the desired audio path and interface con-
figuration by a parameter stored in NVS. The audio path
options include the Motorola MC145483 codec, the OKI
MSM7717 codec through the AAI, or no audio.
Table 20 summarizes the audio path selection and the con-
figuration of the audio interface at the specific mode.
Table 20. Audio Path Configuration
Audio Path
Format
AAI Bit Clock
AAI Frame Clock
AAI Frame Sync
Pulse Length
Motorola MC145483
1
13-bit linear
480 kHz
8 kHz
13 bits
OKI MSM7717
8-bit log PCM
(A-law only)
120 kHz
8 kHz
14 bits
1.
Due to internal clock divider limitations, the optimum of 512 kHz, 8 kHz cannot be reached. The values are set to the
best possible values. The clock mismatch does not result in any discernible loss in audio quality.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX9820ASM | Bluetooth Serial Port Module |
| LMX9820 | Bluetooth Serial Port Module |
| LMX9820SB | Bluetooth Serial Port Module |
| LMX9820SBX | Bluetooth Serial Port Module |
| LP3882ESX-1.2 | 1.5A Fast-Response Ultra Low Dropout Linear |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX9820ADEV | 制造商:Texas Instruments 功能描述:KIT DEV FOR LMX9820 |
| LMX9820ADONGLE/NOPB | 制造商:Texas Instruments 功能描述:KIT REF DESIGN FOR LMX9820 |
| LMX9820ASM | 制造商:Texas Instruments 功能描述:BLUETOOTH MODULE, SMD, 9820, FR4129 |
| LMX9820ASM/NOPB | 制造商:Texas Instruments 功能描述:IC MODULE BLUETOOTH 116-LTCC |
| LMX9820ASMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Bluetooth Serial Port Module |
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