參數(shù)資料
型號： W9968CF
英文描述： Digital Camera
中文描述： 數(shù)碼相機
文件頁數(shù)： 47/78頁
文件大?。?/td> 814K
代理商： W9968CF
W9968CF
Publication Release Date: May 1999
- 47 - Revision A2
Bits 10-9 RAS# Precharge Time Control
00 = 2 MCLKs
01 = 3 MCLKs
10 = 4 MCLKs
11 = 5 MCLKs
Bit 8
RAS# Precharge Time Shrink
0 = Not shrink
1 = Shrink by 0.5 MCLK over that specified by bits 10-9 of this register
Bits 7-6
RAS# Low to CAS# Low Time Control
00 = 1 MCLK
01 = 2 MCLKs
10 = 3 MCLKs
11 = 4 MCLKs
Bits 5-3
Refresh Cycle RAS# Low Pulse Width Control
000 ~ 111 = 1 ~ 8 MCLK cycles
Bit 2
RAS# Low Extend
0 = Not extend
1 = Extend 1 MCLK
Bits 1-0
CAS# Low Stretch Control
00 = Not stretch
01 = Stretch approximately 1 ns
10 = Stretch approximately 2 ns
11 = Stretch approximately 3 ns
SDRAM Control Register (CR04)
Read/Write
Power-on Default:
Index: 0004H
0030H
uC Address: 08H - 09H
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
Read Latency
BTyp
Burst Length
Bits 15-7 Reserved
Bits 6-4
Read Latency
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