看看这个IC, 有希望在上面找到数字输出吗

microsky

买了个单锭的车载播放器, 无损有损几乎所有音频格式通吃, 意在改个简单的数字音源.
拆开却发现是单片方案, 没有独立DAC片, 处理器应该是国产的, 网上没有资料, 也几乎
无人提及, 发上来大家看看, 有谁认识它? 帮忙指点下它有没有数字输出,  是哪个或哪
些脚.

lujuliang

脚真多。。。

想学维修

要不，学习一下以前CD改VCD时的做法，一个个脚试…

user007

这芯片的标示。。。好气人的

sanxia

实在没有资料的话，按照3楼的方法试，

microsky

只能用示波器看了? 指甲大的片子128个脚啊, 放大镜下面都不一定好数, 弄疲了一不小心就短路的, 难度挺大的.

microsky

没有数字音频输出，连GPIO的可选编程列表里面也没有该类选项，废物。结帖！

3 Feature
The systems include the following feature:
  ARM926-EJS 16KB I-Cache/16KB D-Cache
  Support 16 bits SDR
  Two 32-bit Programmed Timers
  Enhanced 8-CH Direct-Memory-Access Controller
  Built in Pulse Width Modulator
  Built in USB 2.0 HS
  Built in Touch Panel Interface
  Built in Low Resolution A/D convertor
  On-chip Sigma-Delta A/D with SNR up to 95dB（A-Weight）
  On-chip Sigma-Delta D/A and PA with SNR up to 100dB（A-Weight）
  On-Chip ROM Boot loader
  Built in HDTV encoder
  Built in LCD controller
  Built in IrDA for remote control
  Built in audio codec for headphone and microphone application
  Support SLC/MLC NAND flash up to 64bits ECC
  Support SD/TF/MMC card
  Fully support PMU application
  Video Decoder Engine(all format up to 1280*720@30fps)
 H.264
Fully compatible with ISO-14496-10 in BP/MP/HP
Supports CABAC/CAVLC
Supports frame/field/MAFF structure
Variable block size(16x16, 16x8, 8x16, 8x8, 8x4, 4x8 and 4x4)
 MPEG-1
Fully compatible with ISO/IEC 11172-2 Mpeg1 specification
Support I, P, B, D pictures
 MPEG-2
Fully compatible with ISO/IEC 13818-2 Mpeg2 specification in Main profile
Support I, P, B pictures
Support field coded picture and frame coded picture
 MPEG-4
Fully compatible with ISO-14496-2 SP/ASP
Supports GMC up to three wrapping points
Supports H.264 baseline profile
Supports Xvid
  Package
-  LQFP128
  3.3V for I/O, and 1.2V for Internal digital circuit

丹麦王子

看看这烧的，，，，，

cccqqqccc

配合周围芯片看看吧！
 On-chip Sigma-Delta A/D with SNR up to 95dB（A-Weight）
  On-chip Sigma-Delta D/A and PA with SNR up to 100dB（A-Weight）