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CY28341-3 参数 Datasheet PDF下载

CY28341-3图片预览
型号: CY28341-3
PDF下载: 下载PDF文件 查看货源
内容描述: 通用时钟芯片为VIA ™ P4M / KT / KM400A DDR系统 [Universal Clock Chip for VIA⑩P4M/KT/KM400A DDR Systems]
分类和应用: 双倍数据速率时钟
文件页数/大小: 19 页 / 264 K
品牌: SPECTRALINEAR [ SPECTRALINEAR INC ]
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CY28341-3  
Byte 5: SDR/DDR Clock Register (continued)  
Bit  
4
@Pup  
Pin#  
Name  
Description  
1
1
1
1
1
31,32 DDRT/C4  
35,36 DDRT/C3  
37,38 DDRT/C2  
41,42 DDRT/C1  
43,44 DDRT/C0  
1 = output enabled (running). 0 = output disabled asynchronously in a low state.  
1 = output enabled (running). 0 = output disabled asynchronously in a low state.  
1 = output enabled (running). 0 = output disabled asynchronously in a low state.  
1 = output enabled (running). 0 = output disabled asynchronously in a low state.  
1 = output enabled (running). 0 = output disabled asynchronously in a low state.  
3
2
1
0
Byte 6: Watchdog Register  
Bit  
@Pup  
Pin#  
Name  
Description  
1 = Pin 26 is the input pin as PD# signal. 0 = Pin 26 is the output pin as  
SRESET# signal.  
7
0
26  
SRESET#  
This bit allows setting the Revert Frequency once the system is rebooted  
due to Watchdog time out only. 0 = select frequency of existing H/W setting,  
1 = select frequency of the second to last S/W table setting. (the software  
setting prior to the one that caused a system reboot).  
6
0
Frequency Revert  
5
4
0
0
WDTEST  
WD Alarm  
For IMI Test - WD-Test, ALWAYS program to '0'  
This bit is set to “1” when the Watchdog times out. It is reset to “0” when the  
system clears the WD time stamps (WD3:0).  
This bit allows the selection of the time stamp for the Watchdog timer. See  
Table 7  
3
2
1
0
0
0
0
0
WD3  
WD2  
WD1  
WD0  
This bit allows the selection of the time stamp for the Watchdog timer. See  
Table 7  
This bit allows the selection of the time stamp for the Watchdog timer. See  
Table 7  
This bit allows the selection of the time stamp for the Watchdog timer. See  
Table 7  
Table 7. Watchdog Time Stamp  
WD3  
0
WD2  
0
WD1  
0
WD0  
0
FUNCTION  
Off  
0
0
0
1
1 second  
2 seconds  
3 seconds  
4 seconds  
5 seconds  
6 seconds  
7 seconds  
8 seconds  
9 seconds  
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
10 seconds  
11 seconds  
12 seconds  
13 seconds  
14 seconds  
15 seconds  
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
Rev 1.0,November 21, 2006  
Page 7 of 19