參數(shù)資料
型號: CY28551LFXCT
廠商: Silicon Laboratories Inc
文件頁數(shù): 4/28頁
文件大?。?/td> 0K
描述: IC CLOCK INTEL/AMD SIS VIA 64QFN
標(biāo)準(zhǔn)包裝: 2,000
類型: 時鐘/頻率發(fā)生器
PLL:
主要目的: Intel CPU,AMD CPU
輸入: 晶體
輸出: HCSL,LVCMOS
電路數(shù): 1
比率 - 輸入:輸出: 1:23
差分 - 輸入:輸出: 無/是
頻率 - 最大: 400MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: 0°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 64-QFN(9x9)
包裝: 帶卷 (TR)
CY28551
....................Document #: 001-05675 Rev. *C Page 12 of 28
Byte 16: Control Register 16
Bit
@Pup
Type
Name
Description
7
0
R/W
PCIE_DAF_N7
The PCIE_DAF_N[8:0] configures the PCIE frequency for
Dial-A-Frequency
6
0
R/W
PCIE_DAF_N6
5
0
R/W
PCIE_DAF_N5
4
0
R/W
PCIE_DAF_N4
3
0
R/W
PCIE_DAF_N3
2
0
R/W
PCIE_DAF_N2
1
0
R/W
PCIE_DAF_N1
0
R/W
PCIE_DAF_N0
Byte 17: Control Register 17
Bit
@Pup
Type
Name
Description
7
0
R/W
Recovery N7
Watchdog Recovery Bit
6
0
R/W
Recovery N6
Watchdog Recovery Bit
5
0
R/W
Recovery N5
Watchdog Recovery Bit
4
0
R/W
Recovery N4
Watchdog Recovery Bit
3
0
R/W
Recovery N3
Watchdog Recovery Bit
2
0
R/W
Recovery N2
Watchdog Recovery Bit
1
0
R/W
Recovery N1
Watchdog Recovery Bit
0
R/W
Recovery N0
Watchdog Recovery Bit
Byte 18: Control Register 18
Bit
@Pup
Type
Name
Description
7
0
R/W
PCIE_N8
PCI-E Dial-A-Frequency Bit N8
6
0
R/W
FS[D:A]
FS_Override
0 = Select operating frequency by FS(D:A) input pins
1 = Select operating frequency by FSEL_(3:0) settings
5
0
R/W
DF_EN
Dynamic Frequency for CPU Frequency Enable
0 = Disable, 1 = Enable
4
0
R/W
RESET_I_EN
RESET_I# Enable
0 = Disable, 1 = Enable
3
0
R/W
Prog_PCIE_EN
Programmable SRC Frequency Enable
0 = Disable, 1 = Enabled
2
0
R/W
Prog_CPU_EN
Programmable CPU Frequency Enable
0 = Disable, 1 = Enable
1
0
R/W
Watchdog
Autorecovery
Watchdog Autorecovery Mode
0 = Disable (Manual), 1= Enable (Auto)
0
R/W
Recovery N8
Watchdog Recovery Bit
Table 5. Crystal Recommendations
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
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