Time clock
signal
存储数据
SDRAM
接口单元
PLL
音频输入
音频数字
信号处理
装
输
入
输
出
数
据
制
视频输入
单
视频输出
单
视频编码
/
编码转换单元
绻统控制单元
串
接
单
数
内
CPU
主
CPU
接口单元
GPIO
PLL
GPIO
inpu
t
output
data
control
Saved data
S D R A M
input unit
V i d e o
input unit
V i d e o
o u t p u t
Main CPU jack
unit
Interior CPU
S e r i a l
interface
jack unit
Audio input
Audio digital
signal dealer
data
Video encoding/
Encoding transfer
Serial interface control
Reset signal
System control unit
channel be faster. When it recording, the digital video signal will be recorded into
DVD+R/RW disc by ES7010 decoder, and then the decoded signal will be sent to
ES6128 decoder to output video signal. Three groups of audio signal will be chosen
one group to output at 3 and 13 pins through 4 groups multi output CD4052. The
chosen audio signal will be transferred into digital audio signal by stereo audio ADC that
integrated with WM8739. The digital audio signal will be sent to ES7010 decoder.
ES7010 is a MPEG2 audio&video encoding chip. The main frequency of ES70101 is
27MHz. In ES7010, there are one unit of video decoding&decoding transfer, digital
audio signal dealer, one CPU with 32 bits, one video input/output unit and one system
control unit. Depending on the function, it can use SDRAM. of 8M or 16M. The
following is the ES7010 interior diagram
：
Figure
2
、
ES7010 interior diagram
ES6128 exchange data with ES7010 by ISPLSI 2064. ISP LSI2064 is a logic
equipment that can programme with high density. It including 64 registers, 32 universal
I/O jacks,4 special inputs, 3 special time clock inputs. It is integrated with input bus unit,
output bus unit and system bus unit. The main function of ISP LSI2064 is controlling the
input and output of separated I/O data by software. In whole system, it is used for
controlling and harmonize the data transfer among ES7010, ES6128 and recording
chip. When it loading a disc, the signal of chip communicating with ES6128. When it
recording a disc, ISP LSI 2064 controlling the communication among ES7010, ES6128
and recording chip.
