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STC5455 Datasheet(PDF) 42 Page - Connor-Winfield Corporation

Part # STC5455
Description  Synchronous Clock for SETS
PDF  56 Pages
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Manufacturer  CONNOR-WINFIELD [Connor-Winfield Corporation]
Direct Link  http://www.conwin.com
Logo CONNOR-WINFIELD - Connor-Winfield Corporation

STC5455 Datasheet(HTML) 42 Page - Connor-Winfield Corporation

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TM121
Rev:P1.3
Date: October 24, 2011
© Copyright the Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
STC5455
Synchronous Clock for SETS
Data sheet
Preliminary
Synth_Index_Select, 0x4A (R/W)
Determines which synthesizer is selected for setting frequency value at the register Synth_Freq_Value and
adjusting phase skew at the register Synth_Skew_Adj.
Default value: 0
Synth_Freq_Value, 0x4B (R/W)
Selects synthesizer frequency value from 1MHz to 156.25MHz, in 1kHz steps, based on which synthesizer
index is selected at register Synth_Index_Select.
This register is not writable for synthesizer F and synthesizer GT4 since their frequency are fixed. Frequency of
synthesizer F is fixed at 8kHz and 2kHz. Frequency of synthesizer GT4 is fixed at 2.048MHz.
Default value varies with synthesizer index selection at the register Synth_Index_Select, refer to table below:
Written values less than 1000 or greater than 156250 are invalid.
Synth_Skew_Adj, 0x4E (R/W)
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x4A
Not Used
Synthesizer index selection for synthesizer frequency and
phase skew adjustment
Field Value
Synthesizer
Associated CLK Output
0
Synthesizer F
CLK8K, CLK2K, CLK2
1
Synthesizer G1
CLK1
2
Synthesizer G2
CLK2
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x4B
Bits 0-7 of 18 bits Synthesizer Frequency Selection
0x4C
Bits 15-8 of 18 bits Synthesizer Frequency Selection
0x4D
Not used
Bits 17-16 of 18 bits Synthesizer
Frequency Selection
Synthesizer Index Selection
Associated CLK Output
Default Value
Synthesizer G1
CLK1
155520 (155.52MHz)
Synthesizer G2
CLK2
38880 (38.88MHz)
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x4E
Lower 8 bits of Synthesizer Phase Skew Adjustment
0x4F
Not used
Higher 4 bits of Synthesizer Phase Skew Adjustment



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