DM500 HD is a basic HDTV satellite signal receiver released by Dream Multimedia. Compared with the advanced HDTV satellite signal receiver DM800, DM500 HD is significantly less expensive. The purpose of Dream Multimedias releasing of DM500 HD is to popularize the HDTV satellite signal receiver and HD standard. We have acquired the tough ware configuration of DM80, but how about DM500 HD?
Here, lets have a look at the hardware configuration of DM500 HD.
1. Memory. DM500 HDs memory technique composed of 3 parts. They are one particular OTP (One Time Programmable) EEPROM (Electrical Erasable Programmable Study Only Memory), one particular NAND FLASH and four DDR SDRAM. The U702 unit is the M27W40180K6 EEPROM developed by ST Micro Electronics. The U703 unit is the HY27US081218 NAND FLASH chip developed by Hynix. The U100, U101, U103 and U104 units are DDR2 800 memory units produced by ELPIDA with the model of E5116AJBG 8E E. Even though the DDR chips capacity of DM500 HD is identical as DM800, DDR2 800 has a considerably greater frequency than DDR2 -400 on DM800. This characteristic of DM500 HD will contribute to DM500 HDs higher capacity of HD stream decoding.
2. Audio and video output interface. The output interface of DM500 HD can give out each digital and analog signal stream. The digital video signal output interface of DM500 HD is the HDMI port. The digital audio signal output interface is the S/P DIF optical fiber port. The analog video and audio stream can be released by SCART interface. This interface can release the CVBS or YPbPr video stream and audio stream. The RGB/YPbPr interface is controlled by the FMS6363 (U402) chip developed by Fairchild.
3. Other Interface. DM500 HD gives an eSATA interface which is employed to connect transportable challenging drive with serial port. There is also a RJ 45 port on the back board of DM500 HD. This port is utilised to connect the internet device and get DM500 HD into LAN. DM500 HD even has a mini USB interface which is utilized to upgrade and create the operating method. The mini USB port is controlled by the CP2102 (U901) chip created by Silicon.
SIM card and encryption chip. The SIM card on DM500 HD is employed to encrypt the software program of Dreambox. There is a Microcontroller Unit chip A3P030 (U1201) on the back of the program board. It is produced by Actel and used to encrypt the technique, as well.