电子工程世界电子工程世界电子工程世界

产品描述

搜索
 

QS6400

器件型号:QS6400
厂商名称:Altonics
厂商官网:http://www.altonics.com
下载文档

器件描述

advanced adpcm sound dsp for mobile

文档预览

Advanced ADPCM SOUND DSP for Mobile
QS6400
1. General Description
.
QS6400 is a high quality sound DSP for mobile phones that plays music through a built-in
ADPCM decoder with sound font rom.
QS6400 is equipped with HWASS's QPCM synthesizer,which is capable of generating up to 64
voices with different tones.
QS6400 can also play two channels of wavefiles of differing sampling rates.
Since data in the FIFO buffer is processed on demand, the length of the data(MIDI & WAVE) is not
limited, making QS6400 an excellent platform for applications such as incoming melody
distribution service.
The MIDI handler built in to QS6400 can play MIDI data without an extra buffer.
Included is a PWM module for audio out with a maximum output of 500mw at 8Ω load
registance(PVDD=4.0V).
For earphone use, QS6400 provides a single-ended stereophonic output terminal.
To operate QS6400 to full capability, "Standard MIDI File(SMF) Format 0" is recommended.
2. Features
ADPCM
synthesizer functions
- 64 voices generated at 39kH simultaneously.
- Compatible with stereophonic sound generation.
- Master Volume control
Individual channel volume / master volume.
- Built-in MIDI handler(sequencer)
- Equipped with two buffers of 128 bytes FIFO for MIDI play.
- Built-in 4 bit or 8 bit ADPCM decorder.
TONE
- Supports GENERAL MIDI LITE specification.
GM 128 voices + 47 voices percussion.
Support to control parameters by "BxH xxh"(see the MIDI implementation chart)
- Additional 8 voices to play korean traditional music.
Gayagum/Daegum/Haegum/Taepyoungso/Buk/Ggwengary/Jang-goo/Jing.
- Various sampling rate : 8 ~ 39Khz
WAVE
- Support to playback ADPCM wavefile(2 Channels)
- Separate wave volume control(0~255).
Gayagum/Daegum/Haegum/Taepyoungso/Buk/Ggwengary/Jang-goo/Jing.
CPU INTERFACING
- 14 Wires parallel interfacing
QS6400
AUDIO
OUTPUT
64
Advanced ADPCM SOUND DSP for
For Mobile Phone
Poly ADPCM Sound Synthesizer
Mobile
QS6400
- PWM or 16bit DAC output can be selected.
- PWM output mode : 500mW when PVDD=4.0V, RL=8Ω
-Provides Stereo or Mono output for earphone.
POWER
SUPPLY
- Includes three power supplies for sub-system
PVDD power supply devoted to PWM block.(3.3 ~ 4.2V)
EVDD power supply devoted to earphone block.(2.7 ~ 3.6V)
VDD is normal power supply.(2.7 ~ 3.6V)
QS6400
3. Block Diagram
3- 1 Outline of Blocks
64
Advanced ADPCM SOUND DSP for
For Mobile Phone
Poly ADPCM Sound Synthesizer
Mobile
QS6400
3- 2 Pin Description
QS6400
3- 2 Description of Blocks
64
Advanced ADPCM SOUND DSP for
For Mobile Phone
Poly ADPCM Sound Synthesizer
Mobile
QS6400
Explanations about each block of QS6400 and flows of the signal are as follows.
1) Register Block : QS6400 has registers of 32 x 8 for storing control data.
Built-in 8052 can communicate directly with the register blocks,
which are used to change control values and communicate commands.
23 x 8 registers are used for this purpose.
The extra registers are available to support additional features.
2) SMF FIFO buffer : This FIFO is used in receiving SMF file blocks (128bytes) from Host.
SMF FIFO Buffer has two banks of memory block and each buffer is
filled with data according to REG_IREQ_TYPE (When bit 2 is "1" ) from
built- in 8052. When receiving a data request (IRQB) for the next
procedure you should read the interrupt request type register
(REG_IREQ_TYPE) to check which data is required.
3) WAVE FIFO buffer : This FIFO is used in receiving wave data blocks (64 or 128 bytes)
from Host. WAVE FIFO Buffer has four banks of memory block, of 64
bytes each. The buffer size is determined by user specification (using
REG_WAVE_CHAN). Each bank is filled with wave data accoding to
REG_IREQ_TYPE( when bit 1 or bit 0 is "1") If you intend to play
high-sampling-rate(up to 22khz) wave files, we recommend that you
use only one wave channel, due to the high transmission rate of data.
In this case, WAVE FIFO Buffer size is preset to 128bytes.
4) Power control : This block is in charge of power management.
You can select whether to enter or wake-up from power down mode.
5) Clock generator : This block is a clock generator for the internal master clock.
QS6400 need the external clock input to operate normally.
6) CPU & ROM : This block describes 8052 micom and 12k bytes program ROM memory.
Built-in 8052 interprets SMF and Wave file.
7) PWM Speaker out : This block converts audio data into PWM format.
It supports stereophonic audio out.
You can also mute this output.
8) Earphone out : This block converts audio data into single-ended earphone signal.
You should connect poled-capacitor and bypass capacitor.
QS6400
64
Advanced ADPCM SOUND DSP for
For Mobile Phone
Poly ADPCM Sound Synthesizer
Mobile
QS6400
9) D/A interface : This block generates 16bit DAC interfacing out for high quality sound.
If you have an additonal DAC, you can also use this interfacing out.
When you use the DAC OUT mode, earphone is disabled.
10) Sound font : This is an embedded maskrom for GM 128 sound map and 47 percussion.
The sound font built in this device stores the sampling data according to
GM 128 sound map. Additionally QS6400 has sampling data to support
korean traditional music.

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 大学堂 TI培训 Datasheet 电子工程

器件索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
搜索索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

北京市海淀区知春路23号集成电路设计园量子银座1305 电话:(010)82350740 邮编:100191

电子工程世界版权所有 京ICP证060456号 京ICP备10001474号 电信业务审批[2006]字第258号函 京公海网安备110108001534 Copyright © 2005-2020 EEWORLD.com.cn, Inc. All rights reserved