1. Scope ......................................................................................................................................................................... 12. ddr4 SDRAM Package Pinout and Addressing ....................................................................................................... 22.1 ddr4 SDRAM Row for X4,X8 and X16 ................................................................................................................22.2 ddr4 SDRAM Ball Pitch........................................................................................................................................22.3 ddr4 SDRAM Columns for X4,X8 and X16 ..........................................................................................................22.4 ddr4 SDRAM X4/8 Ballout using MO-207......................................................................................................... 22.5 ddr4 SDRAM X16 Ballout using MO-207.............................................................................................................32.6 Pinout Description ..................................................................................................................................................52.7 ddr4 SDRAM Addressing.....................................................................................................................................73. Functional Description ...............................................................................................................................................83.1 Simplified State Diagram ....................................................................................................................................83.2 Basic Functionality..................................................................................................................................................93.3 RESET and Initialization Procedure .....................................................................................................................103.3.1 Power-up Initialization Sequence .............................................................................................................103.3.2 Reset Initialization with Stable Power ......................................................................................................113.4 Register Definition ................................................................................................................................................123.4.1 Programming the mode registers .............................................................................................................123.5 Mode Register ......................................................................................................................................................134. ddr4 SDRAM Command Description and Operation ............................................................................................. 244.1 Command Truth Table ..........................................................................................................................................244.2 CKE Truth Table ...................................................................................................................................................254.3 Burst Length, Type and Order ..............................................................................................................................264.3.1 BL8 Burst order with CRC Enabled .........................................................................................................264.4 DLL-off Mode & DLL on/off Switching procedure ................................................................................................274.4.1 DLL on/off switching procedure ...............................................................................................................274.4.2 DLL “on” to DLL “off” Procedure ..............................................................................................................274.4.3 DLL “off” to DLL “on” Procedure ..............................................................................................................284.5 DLL-off Mode........................................................................................................................................................294.6 Input Clock Frequency Change ............................................................................................................................304.7 Write Leveling.......................................................................................................................................................314.7.1 DRAM setting for write leveling & DRAM termination function in that mode ............................................324.7.2 Procedure Description .............................................................................................................................334.7.3 Write Leveling Mode Exit .........................................................................................................................34
標簽： ddr4
上傳時間： 2022-01-09
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ddr4板設計及信號完整性驗證的挑戰
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賽靈思原廠提供的ZCU芯片帶4顆ddr4的設計PCB，提供給有需要的朋友參考。
上傳時間： 2022-05-19
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上傳用戶：jason_vip1
全志H6 開發板評估板 CADENCE_ORCAD硬件原理圖+PCB文件，全志H6采用arm 四核A53架構，搭配MaliT720 GPU，支持OpenGL3.1，支持ddr4、EMMC5.0，芯片性能比上一代提高77%，解碼支持4K@60fps，最高分辨率可達6K(5780×2890)，支持 HDR10、HLG，并集成Allwinner Smartcolor3.0智能畫質引擎，另外，H6還提供了多種高速接口，包括USB3.0，PCIe2.0，千兆網口等，傳輸更快，信號更強。
上傳時間： 2022-05-12
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上傳用戶：canderile
RK3328手冊RK3328 is a high-performance Quad-core application processor designed for Smart STB(Set Top Box) including OTT/IPTV/DVB. It is a high-integration and cost efficient SOC for 4KHDR STB.Quad-core Cortex-A53 is integrated with separate Neon and FPU coprocessor, also withshared L2 Cache. The Quad-core GPU supports high-resolution display and game.Lots of high-performance interface to get very flexible solution, such as multi-channeldisplay including HDMI2.0a and TV Encoder (CVBS). TrustZone and crypto hardware areintegrated for security. 32bits DDR3/DDR3L/ddr4/LPDDR3 provides high memorybandwidth.
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上傳時間： 2013-04-15
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