UAC355xB USB Codec 数据手册：音频接口与转换器详细说明

需积分: 3 121 浏览量更新于2024-08-01 收藏 952KB PDF 举报

"ADC355XB是一款与USB相关的音频编解码器，由Micronas公司生产。这份资料详细介绍了该器件的硬件设计和功能特性，包括USB接口、微控制器、GPIO端口、定时器、音频接口以及电源管理等关键部分。" ADC355XB是Micronas公司推出的一款通用串行总线（USB）编解码器，适用于音频处理应用。该器件集成了多种功能，旨在提供高效、高质量的音频解决方案。文档主要分为多个章节，详细阐述了ADC355XB的各项特性。 1. **介绍**：这部分简要概述了ADC355XB的主要特点，包括其在USB音频设备中的作用和优势。 2. **硬件描述**：硬件描述部分深入解析了ADC355XB的各个组件和工作原理。 - **通用信息**：提供了器件的基本信息和物理特性。 - **USB传输器**：描述了USB接口的物理层，包括USB传输器的职责和操作方式。 - **USB接口**：涵盖了USB接口的逻辑层面，如如何与主机进行通信。 - **微控制器**：讨论了内置微控制器的功能，用于控制和管理器件的内部操作。 - **GPIO**（通用输入/输出）：详述了GPIO端口的配置和用法，可以灵活地配置为输入或输出。 - **通用计时器**：介绍了用于同步和定时的内部计时器。 - **音频接口**：包括音频流接口和控制接口，用于处理音频数据的传输和控制。 - **数字输出**：描述了如何通过串行数据输出实现音频数据的直接传输和微控制器传输。 - **串行音频接口**：涵盖了同步I2S输入/输出、异步I2S输入和带有可选I2S输出的异步I2S输入。 - **电源供应**：讨论了器件的电源需求和管理，确保稳定运行。 - **I2C总线接口**：包含了I2C主设备和从设备的功能，用于与其他设备通信。 - **麦克风和线路输入**：提供了关于音频输入信号处理的细节。 - **模拟输出**：包含数字到模拟转换器（DAC）、模拟滤波器和音量控制，用于生成模拟音频信号。这款器件适用于各种USB音频设备，如耳机、音箱、录音设备等，通过其丰富的功能和接口，能够实现复杂的音频处理任务。其详细的数据手册和描述有助于开发者理解和集成ADC355XB到他们的产品设计中。

DATA SHEET UAC 355xB

Micronas May 13, 2004; 6251-544-2DS 9

2.3. GPIO

There are two groups of different types of GPIOs:

– Input and output pins: GPIO[0…11]

– Control pins: RD, STRB

The port pins can also be set into different electrical

states:

– weak or strong driver strength

– output or tristate

– internal pull-down on or off

There are two GPIO pins with special alternate func-

tions (see Table 2–1)

– GPIO[10] - Start Timer

– GPIO[11] - PWM Output

A description of these functions can be found in Sec-

tion 2.4. “General-Purpose Timer” on page 10.

2.3.1. GPIO Port Configurations

The UAC 355xB can set the GPIO port into different

configurations.

Standard mode

In this mode the GPIO[0…11] pins are used as normal

I/O pins, which can be set or read from the microcon-

troller.

Address mode

In this mode the GPIO pins can be used in a memory

mapped fashion. There is a 16-Byte range of the

microcontrollers address space which is transparent to

the GPIOs. GPIO[0…7] are mapped to the data bus

and GPIO[8…11] are mapped to the lower four bits of

the address bus.

Table 2–1: GPIO port configurations

Pin Name Standard Mode Address Mode

GPIO[0]

Generic I/O

Generic parallel I/O

GPIO[1]

Generic I/O

Generic parallel I/O

GPIO[2]

Generic I/O

Generic parallel I/O

GPIO[3]

Generic I/O

Generic parallel I/O

GPIO[4] Generic I/O Generic parallel I/O

GPIO[5] Generic I/O Generic parallel I/O

GPIO[6] Generic I/O Generic parallel I/O

GPIO[7] Generic I/O Generic parallel I/O

GPIO[8] Generic I/O Addr [0]

GPIO[9] Generic I/O Addr [1]

GPIO[10]

– Generic I/O

– Start timer

Addr [2]

GPIO[11]

– Generic I/O

–PWM out

Addr [3]

RD no function Shows I/O direction

Read (high level) input

Write

(low level) output - timing diagram

STRB no function Strobe pulse, marks valid data

UAC 355xB DATA SHEET

10 May 13, 2004; 6251-544-2DS Micronas

2.4. General-Purpose Timer

The UAC 355xB audio codec family incorporates a

timer. It is a 16-bit counter with clock prescaler. The

clock runs at 12 MHz. The prescaler can be set to

divide by 1 to 256.

The current value of the counter can always be read

back.

The timer initiates interrupts on reaching the count

value MaxA.

The UAC 355xB can start the timer with a “high" level

on GPIO[10].

The timer can be switched to PWM generation to con-

figure GPIO[11] as PWM output.

The structure of the timer is shown in Fig. 2–4. The

PWM output and timer frequencies can be calculated

as shown in Figure 2–5.

Fig. 2–4: Timer structure

Fig. 2–5: PWM timing

2.5. Audio Interface

2.5.1. Audio Streaming Interface

The audio streaming interface directly connects the

USB interface to the APU in order to transmit the digital

audio data in both directions for playback and record.

The following data formats are supported:

2.5.2. Audio Control Interface

The Audio Control Interface links the microcontroller to

the APU and is used to initialize the APU and to trans-

mit audio-related USB control data, such as volume

setting, tone control etc.

The Audio Control Interface supports full access to all

APU registers via microcontroller.

2.5.3. Serial Data Output

Used Pins: USBCLK, USBDAT

This interface provides a data path for transferring

compressed audio to peripheral ICs, such as Micro-

nas’ Dolby Digital decoder MAS 3528E or to an MP3

decoder, e.g., the MAS 3507D or MAS 3509F. This

works independently from the normal USB playback.

The audio format on the USB-OUT pins is burst I

Note: If this interface is used, the “Asynchronous I

input with optional I

S output” is not available

and vice versa.

This interface operates in different modes:

2.5.4. Direct Streaming

In this mode, there is no preprocessing of the timing,

i.e., the data on USBDAT are in phase with the 12 MHz

data on the USB bus, which are sent to a specific end-

point. This can be bulk or isochronous data. The data

appear as they are sent on the USB bus.

Prescaler

12 MHz

Counter

Max A Max B

Control

GPIO[10]

PWM

Timer Interrupt

GPIO[11]

EXT_ENB

Tclk

Tclk = 12 MHz / Prescale

Timer frequency:

PWM frequency:

PWM = Tclk / (MaxA + MaxB)

MaxA MaxB MaxB

MaxA

Table 2–2: Audio Formats

Playback Record

16-bit MONO 8-bit MONO

16-bit STEREO 16-bit MONO

24-bit STEREO 16-bit STEREO

剩余47页未读，继续阅读

longshanshao

粉丝: 0
资源: 2

UAC355xB USB Codec 数据手册：音频接口与转换器详细说明

MS51FB9AE_MS51XB9AE_MS51XB9BE_SC_Rev1.04技术手册中文版.pdf

STM32H750XB官方开发板工程

WT2605XB04-DF 远程下载语音模块，规格说明书

FT32F072XB中文使用说明书（FT32F072RBAT7、FT32F072CBAT7）

STM32说明 STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB )

STM32F103x8_xB数据手册

TC39xB-DS-v11.pdf

STM32F103xB-User-Manual.chm

STM32数据手册及中文参考手册V10 （STM32F103x6、 STM32F103x8、 STM32F103xB）

STM32F070xB HAL库函数英文手册使用指南

最新资源