- 您现在的位置：买卖IC网 > PDF目录16077 > IPR-SDRAM/DDR2 (Altera)IP DDR2 SDRAM CONTROLLER RENEW PDF资料下载
参数资料
| 型号： | IPR-SDRAM/DDR2 |
| 厂商： | Altera |
| 文件页数： | 65/106页 |
| 文件大小： | 0K |
| 描述： | IP DDR2 SDRAM CONTROLLER RENEW |
| 标准包装： | 1 |
| 系列： | * |
| 类型： | MegaCore |
| 功能： | DDR2 SDRAM 控制器 |
| 许可证： | 续用许可证 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页当前第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页
Chapter 3: Functional Description
Interfaces & Signals
Table 3–7. System Signals (Part 2 of 2)
3–29
Signal Name
write_clk
dqs_ref_clk
fedback_clock_out
stratix_dll_control
Direction
Input
Output
Output
Output
Description
Shifted clock that center aligns write data to the memory.
Stratix DLL reference clock output.
Fed-back clock output.
Disables the Stratix DLL reference clock during reads.
(1) This signal only exists on the custom variation when a dedicated clock phase is required, otherwise the connection is made inside the custom
variation.
Figure 3–19. Circuit for resynch_clk_edge_select
Capture
Register
Resynchronization
Register
Extra
Resynchronization
M u ltiplex
Pipeline
Register
local_rdata
Register
Table 3–8. Local Interface Signals (Part 1 of 2)
Signal Name
local_addr[]
local_be[]
local_burstbegin
local_read_req
local_refresh_req
Direction
Input
Input
Input
Input
Input
Description
Memory address at which the burst should start. The width of this bus is sized
using the following equation:
For one chip select:
width = bank bits + row bits + column bits – 1
For multiple chip selects:
width = chip bits + bank bits + row bits + column bits – 1
The least significant bit (LSB) of the column address on the memory side is
ignored, because the local data width is twice that of the memory data bus
width.
The order of the address bits is set in the clear text part of the MegaCore
function ( auk_ddr_sdram.vhd ). The order is chips, bank, row, column, but
you can change it if required.
Byte enable signal, which you use to mask off individual bytes during writes.
Avalon-MM burst begin strobe, which indicates the beginning of an Avalon-
MM burst. This signal is only available when the local interface is an Avalon-
MM interface and the memory burst length is greater than 2.
Read request signal.
User controlled refresh request. If User Controlled Refresh is turned on,
local_refresh_req becomes available and you are responsible for
issuing sufficient refresh requests to meet the memory requirements. This
option allows complete control over when refreshes are issued to the memory
including ganging together multiple refresh commands. Refresh requests take
priority over read and write requests unless they are already being processed.
? March 2009
Altera Corporation
相关PDF资料 |
PDF描述 |
|---|---|
| GEM31DTBN-S189 | CONN EDGECARD 62POS R/A .156 SLD |
| GEM31DTBH-S189 | CONN EDGECARD 62POS R/A .156 SLD |
| GEM31DTBD-S189 | CONN EDGECARD 62POS R/A .156 SLD |
| GEM31DTAN-S189 | CONN EDGECARD 62POS R/A .156 SLD |
| 10YXJ2200M10X20 | CAP ALUM 2200UF 10V 20% RADIAL |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IP-RSENC | 功能描述:开发软件 Reed-Solomon Encoder MegaCore RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| IPR-SLITE2 | 功能描述:开发软件 SerialLite II MegaCore RENEWAL RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| IPR-SRAM/QDRII | 功能描述:开发软件 QDRII SRAM Control MegaCore RENEWAL RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| IPR-SSIP | 功能描述:开发软件 Crypto Bundle BU Solution RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| IPR-TRIETHERNET | 功能描述:开发软件 Triple Speed Ethernt MegaCore RENEWAL RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
发布紧急采购，3分钟左右您将得到回复。