参数资料
型号: W9712G6JB-3
厂商: WINBOND ELECTRONICS CORP
元件分类: DRAM
英文描述: 8M X 16 DDR DRAM, 0.45 ns, PBGA84
封装: 12.50 X 8 MM, ROHS COMPLIANT, WBGA-84
文件页数: 7/86页
文件大小: 1027K
代理商: W9712G6JB-3
W9712G6JB
Publication Release Date: Mar. 15, 2010
- 15 -
Revision A01
7.2.3
Off-Chip Driver (OCD) Impedance Adjustment
DDR2 SDRAM supports driver calibration feature and the flow chart in Figure 6 is an example of the
sequence. Every calibration mode command should be followed by “OCD calibration mode exit”
before any other command being issued. MRS should be set before entering OCD impedance
adjustment and On Die Termination (ODT) should be carefully controlled depending on system
environment.
Start
ALL OK
All MR shoud be programmed before entering OCD impedance adjustment and ODT should
be carefully controlled depending on system environment
EMRS: Drive(0)
DQ &DQS Low; DQS High
EMRS: OCD calibration mode exit
Test
Need Calibration
EMRS: OCD calibration mode exit
EMRS:
Enter Adjust Mode
BL=4 code input to all DQs
Inc, Dec or NOP
EMRS: OCD calibration mode exit
ALL OK
EMRS: Drive(1)
DQ &DQS High; DQS Low
Test
Need Calibration
EMRS: OCD calibration mode exit
EMRS:
Enter Adjust Mode
BL=4 code input to all DQs
Inc, Dec or NOP
EMRS: OCD calibration mode exit
End
Figure 6—OCD Impedance Adjustment Flow Chart
相关PDF资料
PDF描述
W981616CH-5 1M X 16 SYNCHRONOUS DRAM, 5.5 ns, PDSO50
W986408AH-10 8M X 8 SYNCHRONOUS DRAM, 8 ns, PDSO54
W986408BH-8N 8M X 8 SYNCHRONOUS DRAM, 6 ns, PDSO54
W986416BH-7 4M X 16 SYNCHRONOUS DRAM, 5.4 ns, PDSO54
WC320240A-AF WC320240A-FCI-N
相关代理商/技术参数
参数描述
W9712G6KB-25 制造商:Winbond Electronics Corp 功能描述:128M DDR2-800, X16 制造商:Winbond Electronics 功能描述:IC MEMORY 制造商:Winbond Electronics Corp 功能描述:IC MEMORY
W9712G6KB25I 制造商:Winbond Electronics 功能描述:IC MEMORY 制造商:Winbond Electronics Corp 功能描述:IC MEMORY
W9712G8JB 制造商:WINBOND 制造商全称:Winbond 功能描述:4M × 4 BANKS × 8 BIT DDR2 SDRAM
W9712G8JB25 制造商:Winbond Electronics Corp 功能描述:DRAM Chip DDR2 SDRAM 128M-Bit 16Mx8 1.8V 60-Pin WBGA
W9712G8JB25I 制造商:Winbond Electronics Corp 功能描述:128M DDR2-800, X8, IND TEMP