STC5425 Datasheet, PDF (27/48 Pages) Connor-Winfield Corporation – Line Card Clock

Freerun_Cali, 0x0C (R/W)
STC5425
Line Card Clock
Data sheet
Address
Bit7
0x0C
0x0D
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Lower 8 bits of Freerun Calibration
Not used
Upper 3 bits of Freerun Calibration
Freerun calibration, from -102.4 to +102.3 ppm, in 0.1ppm steps, 2’s complement.
Default value: 0
Disqualification_Range, 0x0E (R/W)
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x0E
0x0F
Lower 8 bits of Disqualification Range
Not used
Upper 2 bits Disqualification Range
Reference disqualification range, from 0 to +102.3 ppm, in 0.1 ppm steps. This also sets the pull-in range. (See
the Reference Input Monitoring and Qualification section). New disqualification range must be greater than
qualification range in register Qualification_Range. Otherwise, the value will not be written to the register.
Default value: 360 (range = 36.0 ppm).
Qualification_Range, 0x10 (R/W)
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x10
Lower 8 bits of Qualification Range
0x11
Not used
Upper 2 bits Qualification Range
Reference qualification range, from 0 to +102.3 ppm, in 0.1 ppm steps. New qualification must be less than dis-
qualification range. Otherwise, the value will not be written to the register.
Default value: 350 (range = 35.0 ppm).
Qualification_Soaking_Time, 0x12 (R/W)
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x12
Not used
0 ~ 63 s
Sets the soaking time for reference qualification, from 0 to 63s, in 1s step.
Default value: 1 (1s)
Ref_Index_Selector, 0x13 (R/W)
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x13
Not used
REF1~REF5
Preliminary
Page 27 of 48 TM113
Rev:P1.3
© Copyright the Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Date: September 20, 2011