- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄363908 > W946432AD (WINBOND ELECTRONICS CORP) 512K X 4 BANKS X 32 BITS DDR SDRAM PDF資料下載
參數(shù)資料
| 型號(hào)： | W946432AD |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 512K X 4 BANKS X 32 BITS DDR SDRAM |
| 中文描述： | 為512k × 4銀行× 32位DDR內(nèi)存 |
| 文件頁數(shù)： | 10/40頁 |
| 文件大小： | 462K |
| 代理商： | W946432AD |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁
W946432AD
10
REGISTER DEFINITION
MODE REGISTER
The Mode Register is programmed by the MODE REGISTER SET command (MRS/EMRS)
when all banks
are idle and no bursts are in progress
.
The Mode Register is used to define the operation specific mode of of the DDR SDRAM. This definition
includes the selection of a burst length, a burst type, a CAS latency, and an operating mode, as shown in
Figure1:
The Extended Mode Register controls functions beyond those controlled by the Mode Register; these
additional functionsinclude DLL enable/disable,output drive strength selection. These functions as shown
inFigure1:.
Mode Register must be loaded, and the controller must wait the specified time before initiating the
subsequent operation. Violating either of these requirements will result in unspecified operation.
Figure1:Mode Register Definition
BA0
BA1
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
12
10
9
8
7
6
5
4
3
2
1
0
0*
Extended Mode Register
Address Bus
BT
Operating Mode
0*
13
CAS Latency
Burst Latency
* BA0 and BA1
must be 0, 0 to select the
Mode Register (vs. the
Extended Mode Register).
A3
Burst Type
0
1
Burst Latency
Sequential
Interleaved
CAS Latency
Reserved
Reserved
Reserved
3
Reserved
A3 = 0
A3 = 1
Reserved
Reserved
2
2
4
4
8
8
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
A2 A1 A0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Operating Mode
Normal Operation
Normal Operation/Reset DLL
Vendor Specific Test Mode
All other states reserved
A6 A5 A4
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
A6-A0
Valid
VS
Valid
-
A7
A8
0
0
0
1
1
0
-
-
An-A9
0
0
0
-
VS = Vendor Specific
MODE REGISTER DEFINITION
Reserved
Reserved
Reserved
Enable
Disable
DS0
Normal
Weak (optional)
BA0 BA1 A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
12
11
10
9
8
7
6
5
4
3
2
1
0
1*
0*
DS1 DS0 DLL
A0
0
1
DLL
A1
0
1
* BA0 and BA1
must be 1, 0 to select the
Extended Mode Register (vs. the
base Mode Register).
Extended Mode Register
Address Bus
EXTENDED MODE REGISTER DEFINITION
DS2
Operating Mode
-
Valid
-
Operating Mode
Normal Operation
All other states reserved
A10-A4
A3-A0
0
A2
DS1
0
1
A3
DS2
0
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W963A6BBN | 512K WORD X 16 BIT LOW POWER PSEUDO SRAM |
| W963A6BBN70 | 512K WORD X 16 BIT LOW POWER PSEUDO SRAM |
| W963A6BBN70E | 512K WORD X 16 BIT LOW POWER PSEUDO SRAM |
| W963A6BBN70I | 512K WORD X 16 BIT LOW POWER PSEUDO SRAM |
| W963A6BBN80 | 512K WORD X 16 BIT LOW POWER PSEUDO SRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W9464G6IB | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M × 4 BANKS × 16 BITS DDR SDRAM |
| W9464G6IH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M ?? 4 BANKS ?? 16 BITS DDR SDRAM |
| W9464G6JH | 制造商:WINBOND 制造商全稱:Winbond 功能描述:1M ? 4 BANKS ? 16 BITS DDR SDRAM |
| W9464G6JH-4 | 制造商:Winbond Electronics Corp 功能描述:IC DDR SDRAM 64M 200MHZ 66TSOP |
| W9464G6JH-5 | 制造商:Winbond Electronics Corp 功能描述:64MBIT DDRI 制造商:Winbond Electronics Corp 功能描述:IC DDR SDRAM 64M 200MHZ 66TSOP |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。