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参数资料
| 型号： | CS48560-DQZR |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 6/23页 |
| 文件大小： | 0K |
| 描述： | IC DSP HP 32BIT 12CH I/O 48-QFP |
| 标准包装： | 2,000 |
| 系列： | CS485xx |
| 类型： | 定点 |
| 接口： | I²C，SPI |
| 时钟速率： | 150MHz |
| 芯片上RAM： | 96kB |
| 电压 - 输入/输出： | 3.30V |
| 电压 - 核心： | 1.80V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 带卷 (TR) |
| 配用： | 598-1284-ND - KIT USB EVALUATION FOR CDB48500 |
3 Code Overlays
3 Code Overlays
The suite of software available for the CS485xx family consists of an operating system (OS) and a library of overlays. The
overlays have been divided into three main groups called Matrix-processors, Virtualizer-processors, and Post-processors.
All software components are defined below:
1. OS/Kernel —Encompasses all non-audio processing tasks, including loading data from external memory,
processing host messages, calling audio-processing subroutines, error concealment, etc.
2. Matrix-processor —Any Module that performs a matrix decode on PCM data to produce more output channels
than input channels (2 ? n channels). Examples are Dolby ProLogic IIx and DTS Neo:6. Generally speaking, these
modules increase the number of valid channels in the audio I/O buffer.
3. Virtualizer-processor —Any module that encodes PCM data into fewer output channels than input channels (n ? 2
channels) with the effect of providing “phantom” speakers to represent the physical audio channels that were
eliminated. Examples are Dolby Headphone ? and Dolby Virtual Speaker ? . Generally speaking, these modules
reduce the number of valid channels in the audio I/O buffer.
4. Post-processors —Any module that processes audio I/O buffer PCM data in-place after the matrix- or
virtualizer-processors. Examples are bass management, audio manager, tone control, EQ, delay,
customer-specific effects, etc.
The bulk of each overlay is stored in ROM within the CS485xx, but a small image is required to configure the overlays and
boot the DSP. This small image can either be stored in an external serial FLASH/EEPROM, or downloaded via a host
controller through the SPI ? /I 2 C ? serial port.
The overlay structure reduces the time required to reconfigure the DSP when a processing change is requested. Each
overlay can be reloaded independently without disturbing the other overlays. For example , when a new matrix-processor
is selected, the OS, virtualizer-, and post-processors do not need to be reloaded — only the new matrix-processor (the
same is true for the other overlays).
Table 3-1 lists the firmware available based on device selection. Refer AN298, CS485xx Firmware User’s
Manual for the latest listing of application codes and Cirrus Framework ? modules available.
Table 3-1. Device and Firmware Selection Guide
Device Suggested Application
CS48520-CQZ Digital TV, portable audio docking station, portable DVD, DVD mini/
receiver, multimedia PC speakers
CS48540-CQZ CS48520 features plus 8-channel car audio, DVD receiver
CS48540-DQZ
CS48560-CQZ CS48540 features plus 12-channel car audio, high-end digital TV, dual
CS48560-DQZ source/dual zone SACD
6
Channel Count Input/Output
Up to 4-channel in/4-channel out
Up to 8-channel in/8-channel out
Up to 12-channel in/12-channel out
Package
48-pin QFP
48-pin QFP
48-pin QFP
DS734F5
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相关代理商/技术参数 |
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|---|---|
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