参数资料
型号: SL28647CLCT
厂商: SILICON LABORATORIES
元件分类: 时钟产生/分配
英文描述: 400 MHz, PROC SPECIFIC CLOCK GENERATOR, QCC72
封装: 10 X 10 MM, ROHS COMPLIANT, QFN-72
文件页数: 4/27页
文件大小: 269K
代理商: SL28647CLCT
SL28647
.....................Document #: 001-05103 Rev *B Page 12 of 27
The SL28647 requires a Parallel Resonance Crystal. Substi-
tuting a series resonance crystal will cause the SL28647 to
operate at the wrong frequency and violate the ppm specifi-
cation. For most applications there is a 300-ppm frequency
Byte 18 Control Register 18
Bit
@Pup
Name
Description
7
1
RESERVED
6
1
RESERVED
5
1
RESERVED
4
1
RESERVED
3
1
RESERVED
2
1
RESERVED
1
RESERVED
0
1
RESERVED
Byte 19 Control Register 19
Bit
@Pup
Name
Description
7
1
PCI4 Bit 2
PCI4 Slew Rate Control Bit 2, See Table 6 for more detail
0=Low, 1 = High
6
1
PCI3 Bit 2
PCI3 Slew Rate Control Bit 2, See Table 6 for more detail
0=Low, 1 = High
5
1
PCI2 Bit 2
PCI2 Slew Rate Control Bit 2, See Table 6 for more detail
0=Low, 1 = High
4
1
PCI1 Bit 2
PCI1 Slew Rate Control Bit 2, See Table 6 for more detail
0=Low, 1 = High
3
1
PCIF0 Bit 2
PCIF0 Slew Rate Control Bit 2, See Table 6 for more detail
0=Low, 1 = High
2
1
48M Bit 2
48M Slew Rate Control Bit 2, See Table 6 for more detail
0=Low, 1 = High
1
RESERVED
0
1
RESERVED
Table 7. Crystal Recommendation
Frequency
(Fund)
Cut
Loading
Load Cap
Drive
(max.)
Shunt Cap
(max.)
Motional
(max.)
Tolerance
(max.)
Stability
(max.)
Aging
(max.)
14.31818 MHz
AT
Parallel
20 pF
0.1 mW
5 pF
0.016 pF
35 ppm
30 ppm
5 ppm
Table 6. Slew Rate Control Table
Bit2
Bit1
Bit0
Default
1
Fastest
110
101
100
011
010
001
000
Slowest
Slew Rate Control Bit [2:0]
Slew Rate
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参数描述
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SL28748ELCT 功能描述:时钟发生器及支持产品 Calpella IronLake Jasper Forest IbexPk RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56
SL28748ELCTR 制造商:Silicon Laboratories Inc 功能描述:
SL28748ELI 功能描述:时钟发生器及支持产品 Calpella IronLake Jasper Forest IbexPk RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56
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