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CY28349B 参数 Datasheet PDF下载

CY28349B图片预览
型号: CY28349B
PDF下载: 下载PDF文件 查看货源
内容描述: FTG的Intel㈢ Pentium㈢ 4的CPU和芯片组 [FTG for Intel㈢ Pentium㈢ 4 CPU and Chipsets]
分类和应用:
文件页数/大小: 20 页 / 222 K
品牌: SPECTRALINEAR [ SPECTRALINEAR INC ]
 浏览型号CY28349B的Datasheet PDF文件第2页浏览型号CY28349B的Datasheet PDF文件第3页浏览型号CY28349B的Datasheet PDF文件第4页浏览型号CY28349B的Datasheet PDF文件第5页浏览型号CY28349B的Datasheet PDF文件第7页浏览型号CY28349B的Datasheet PDF文件第8页浏览型号CY28349B的Datasheet PDF文件第9页浏览型号CY28349B的Datasheet PDF文件第10页  
CY28349B  
Table 3. Byte Read and Byte Write Protocol (continued)  
Byte Write Protocol  
Byte Read Protocol  
Description  
Bit  
9
Description  
Bit  
9
Write  
Write  
10  
Acknowledge from slave  
10  
Acknowledge from slave  
11:18  
Command Code – 8 bits  
11:18  
Command Code – 8 bits  
‘1xxxxxxx’ stands for byte operation  
bit[6:0] of the command code represents the offset  
of the byte to be accessed  
‘1xxxxxxx’ stands for byte operation  
bit[6:0] of the command code represents the offset  
of the byte to be accessed  
19  
20:27  
28  
Acknowledge from slave  
Data byte – 8 bits  
Acknowledge from slave  
Stop  
19  
20  
Acknowledge from slave  
Repeat start  
21:27  
28  
Slave address – 7 bits  
Read  
29  
29  
Acknowledge from slave  
Data byte from slave – 8 bits  
Not Acknowledge  
Stop  
30:37  
38  
39  
Data Byte Configuration Map  
Data Byte 0  
Power On  
Default  
Bit  
Bit 7  
Pin#  
Name  
Spread Select2  
Description  
‘000’ = OFF  
0
0
0
Bit 6  
Bit 5  
Spread Select1  
Spread Select0  
‘001’ = Reserved  
‘010’ = Reserved  
‘011’ = Reserved  
‘100’ = 0.25%  
‘101’ = – 0.5%  
‘110’ = 0.5%  
‘111’ = 0.38%  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
SEL4  
SEL3  
SEL2  
SEL1  
SEL0  
SW Frequency selection bits. See Table 4.  
0
0
0
0
0
Data Byte 1  
Power On  
Default  
Bit  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Pin#  
Name  
Description  
(Active/Inactive)  
38, 37 CPU1, CPU1#  
41, 40 CPU0, CPU0#  
1
1
1
1
1
1
1
1
(Active/Inactive)  
22  
23  
27  
28  
30  
31  
48MHz  
(Active/Inactive)  
24_48MHz  
3V66_3  
3V66_2  
3V66_1  
3V66_0  
(Active/Inactive)  
(Active/Inactive)  
(Active/Inactive)  
(Active/Inactive)  
(Active/Inactive)  
Rev 1.0,November 20, 2006  
Page 6 of 20  
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