
Clock Generator
Schematic Diagrams
+3VS  | 
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  | MainU28Clock Generator | Clock Outputs  | 
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  | Damping Resistors  | 
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  | Place near to the  | 
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  | L84 FCM2012V121  | 
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  | CLK_VCC3  | 
  | CLOCK GEN (650)  | 
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1  | 2  | 
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  | 1  | VDDREF  | 
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  | 40  | 1  | 4  | 3  | |||||
C76  | C401  | C85  | C84  | C81  | C102  | C103  | C105  | C104  | 13  | VDDZ  | 
  | CPUCLK0  | 39  | 
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  | 19  | VDDPCI  | 
  | CPUCLK#0  | 
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0.1UF  | 10UF/10V  | 0.1UF  | 0.1UF 0.1UF  | 0.1UF  | 0.1UF  | 0.1UF  | 0.1UF  | 28  | VDDPCI  | 
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  | 44  | 1  | 4  | 5  | 
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VDD48  | 
  | CPUCLK1  | 
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  | 42  | VDDAGP  | 
  | CPUCLK#1  | 
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  | 48  | VDDCPU  | 
  | SDCLK  | 47  | R309  | 22  | SDCLK  | SDCLK  | 6  | 
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  | VDDSD  | 
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  | R310  | 
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  | 12  | PCI_STOP#  | 
  | AGPCLK0  | 31  | 22  | AGPCLK  | AGPCLK  | 5  | 
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  | 30  | R311  | 22  | AGPCLKATI  | 
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  | 5  | VSSREF  | 
  | AGPCLK1  | 
  | R334  | 22  | 
  | AGPCLKATI  | 30  | 
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  | 9  | ZCLK0  | ZCLK0  | 9  | 
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  | +3VS  | 18  | VSSZ  | 
  | ZCLK0  | 10  | R335  | 22  | ZCLK1  | 
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  | 24  | VSSPCI  | 
  | ZCLK1  | 
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  | ZCLK1  | 13  | 
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  | VSSPCI  | 
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  | 14  | FS3  | R336  | 33  | PCICLK961  | 
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  | PCICLK961  | 13  | |||||||
  | +3VS  | 
  | +3VS  | 
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  | R37  | 
  | 32  | VSS48  | 
  | PCICLK_F0/FS3  | 15  | FS4  | R337  | 33  | PCICLK1394  | |||
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  | 41  | VSSAGP  | 
  | PCICLK_F1/FS4  | 16  | R338  | 33  | PCICLKPCM  | T  | 
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  | 46  | VSSCPU  | 
  | PCICLK0  | 17  | R339  | 33  | PCICLKLAN  | PCICLKPCM  | 19  | ||
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  | 10K  | 
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  | VSSSD  | 
  | PCICLK1  | 20  | R340  | 33  | PCICLKIO  | PCICLKLAN  | 25  | ||
  | R59  | R43  | 
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  | D10  | 
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  | PCICLK2  | 21  | R341  | 33  | PCICLKH8  | PCICLKIO  | 22  | ||
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  | PCICLK3  | 22  | R342  | 33  | PCLK_80P  | PCICLKH8  | 24  | ||
  | 10K  | 10K  | 15,29 CPUSTP#  | 
  | C  | A  | 
  | 45  | CPU_STOP#  | PCICLK4  | 23  | T  | 
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  | PCLK_80P  | 20  | |||||
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  | PCICLK5  | 
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  | 14.381MHZ | |||||||
VTT  | 
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  | 1SS355  | 
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  | REF0/FS0  | 2  | FS0  | R331  | 33  | REFCLK0  | ||||
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  | 3  | FS1  | R332  | 33  | REFCLK1  | REFCLK0  | 9  | 
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R62  | C  | 
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  | PD#/VTT_PWRGD  | REF1/FS1  | 4  | FS2  | R333  | 33  | CLKAPIC  | REFCLK1  | 15  | 
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  | B  | B  | 
  | Q19  | 
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  | R45  | 
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  | REF2/FS2  | 
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  | CLKAPIC  | 15  | 
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  | E  | 
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  | 27  | R312  | 22  | UCLK48M  | 48 MHZ | 
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  | E Q20  | 
  | 2N3904  | 
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  | IREF  | 
  | 48M  | 
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10K  | 2N3904  | 
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  | 475_1%  | 
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  | 26  | MULTISEL  | R313  | 22  | SIO48M  | UCLK48M  | 16  | 
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  | L21  | 
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  | 24_48M/MULTISEL  | SIO48M  | 22  | 
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  | +3VS  | 1  | 
  | 2FCM1608K121  | 36  | VDDA  | 
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  | C90  | 
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  | C83  | C82  | 
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  | SCLK  | 35  | SMBCLK  | SMBCLK  | 7,15  | 
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  | 34  | SMBDAT  | 
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  | 0.1UF  | 
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  | 0.1UF  | 0.01UF  | 
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  | SDATA  | 
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  | SMBDAT  | 7,15  | 
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  | 37  | VSSA  | XIN  | XOUT  | 
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  | +3VS  | 
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  | ICS 952001  | 6  | 7  | 
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  | CY 28342  | Y5  | 
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  | C77  | 
  | C78  | 
  | C86  | 
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  | 14.318MHz  | 
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  | MULTISEL  | R44  | 0(R)  | 
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  | 10UF/10V  | 0.01UF  | 
  | 0.1UF  | 
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  | C92  | C91  | 
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  | 10PF  | 10PF  | 
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  | +2.5VS  | 
  | Clock Buffer (DDR) | 
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  | U29  | 
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CLOCK BUFFER (DDR48)
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  | L33  | 
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  | BUFFERVCC  | 
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  | DDRCLK3  | 
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  | 3  | VDD  | CLK0  | 2  | RP75  | 3  | 2  | DDRCLK37  | |||||
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  | FCM2012V121  | 
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  | 12  | 1  | 
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  | DDRCLK#3  | ||||
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  | VDD  | CLK#0  | 
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  | DDRCLK#37  | |||||||
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  | C523  | C532  | C550  | C557  | 23  | 
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  | C208  | C565  | C207  | VDD  | 
  | 4  | RP76  | 4  | 1  | DDRCLK0  | 
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  | CLK1  | DDRCLK07  | |||||||||||
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  | 10U(0805)  | 0.1UF  | 0.1UF  | 0.1UF  | 
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  | 5  | 
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  | DDRCLK#0  | |||
  | 10U(0805)  | 0.01UF  | 0.1UF  | 
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  | CLK#1  | 
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  | DDRCLK#07  | |||||||||
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  | DDRCLK2  | ||||||
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  | 13  | RP77  | 2  | 3  | 
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  | +2.5VS L94  | 
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  | CLK2  | DDRCLK27  | |||||||
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  | 14  | 
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  | DDRCLK#2  | ||||
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  | CLK#2  | 
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  | DDRCLK#27  | ||||||
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  | BUF_2.5VS  | 
  | 10  | AVDD  | 
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  | DDRCLK4  | |||
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  | FCM1608K121  | 
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  | CLK3  | 17  | RP62  | 1  | 4  | DDRCLK47  | |||||
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  | C560  | 
  | C549  | C556  | 
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  | DDRCLK#4  | |||
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  | CLK#3  | 
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  | DDRCLK#47  | ||||||||
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  | DDRCLK1  | |||
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  | 10U(0805)  | 0.01UF  | 0.1UF  | 
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  | CLK4  | 24  | RP61  | 2  | 3  | DDRCLK17  | ||||
  | Frequency  | 
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  | 25  | 
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  | DDRCLK#1  | ||||
+3VS  | 
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  | CLK#4  | 
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  | DDRCLK#17  | |||||||
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  | SMBCLK  | 7  | 
  | 26  | RP60  | 2  | 3  | DDRCLK5  | ||||||||
  | Selection | 
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  | SCLK  | CLK#5  | DDRCLK#57  | |||||||||||
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  | 27  | 
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  | DDRCLK#5  | ||||||
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  | SMBDAT  | 
  | CLK5  | 
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  | DDRCLK57  | ||
R67  | 4.7K  | FS0  | 
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  | 22  | SDATA  | 
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  | R384  | 
  | 22  | FB_IN  | 
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R66  | 4.7K  | FS1  | 
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  | FWDSDCLKO  | 
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  | FB_OUT  | 19  | FB_OUT  | 
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R65  | 4.7K(R)  | FS2  | 
  | 6 FWDSDCLKO  | 
  | 8  | CLK_IN  | 
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R61  | 4.7K(R)  | FS3  | 
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  | NEAR DDR SODIMM | |||||||
R60  | 4.7K(R)  | FS4  | 
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  | FB_IN  | 
  | 20  | 
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  | +2.5V  | 
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  | FB_IN  | GND  | 
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  | GND  | 15  | 
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+3VS  | 
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  | 9  | 
  | GND  | 
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  | 6  | 
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  | C684  | 
  | T  | 
  | 18  | NC  | GND  | 
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  | Place near to the Clock Buffer  | 
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  | T  | 
  | NC  | 
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  | 21  | 
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  | 0.1UF  | 
  | T  | 
  | NC  | 
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  | FB_IN  | 
  | C533  | 10PF(R)  | 
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  | ICS 93722  | 
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R283  | R296  | 
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  | +1.8VS  | 
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4.7K  | 4.7K  | 
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  | CY28352 | 
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BSEL0 3
BSEL1 3
PLEASE PLACE IN COMP SIDE
AND NEAR TOGETHER
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  | FS4  | FS3  | FS2  | FS1  | FS0  | CPU SDRAM ZCLK AGP PCI | ||||
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  | L  | L  | 
  | 0  | 0  | 0  | 1  | 1  | 100M  | 133M  | 66M  | 66M  | 33M  | |
  | BSEL1  | BSEL0  | Function  | 
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  | 0  | 0  | 0  | 0  | 1  | 100M | 100M  | 66M | 66M  | 33M | |
  | L  | H  | 
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  | H  | L  | 
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  | H  | H  | 
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SDCLK  | C75  | 
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AGPCLK  | C74  | 
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AGPCLKATI  | C688  | |
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ZCLK0  | C121  | |
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ZCLK1  | C120  | |
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PCICLK961  | C119  | |
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PCICLK1394  | C118  | |
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PCICLKPCM  | C117  | |
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PCICLKLAN  | C116  | |
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PCICLKIO  | C115  | |
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PCICLKH8  | C114  | |
UCLK48M  | C73  | 
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49.9_1%  | 
49.9_1%  | 
49.9_1%  | 
49.9_1%  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
10PF(R)  | 
Sheet 4 of 41
Clock Generator
B.Schematic Diagrams
Clock Generator