STC5428 Datasheet, PDF (42/66 Pages) Connor-Winfield Corporation – Synchronous Clock for SETS

Auto_Elect_Ref, 0x22 (R)
STC5428
Synchronous Clock for SETS
DATASHEET
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x22
Not used
Auto selected reference
Indicates the auto-elect reference. The auto-elect reference is elected by the elector according to revertivity
status, and each reference’s priority and qualification. Reference auto-elector keep electing the reference even
in manual reference selection mode.
Bit 3 ~ Bit 0
0
1 ~ 12
13
14 ~15
Manual_Select_Ref, 0x23 (R/W)
Selection
Freerun
Sync with Ref 1 ~ Ref 12
Holdover
Reserved
Address
Bit7
Bit6
Bit5
Bit4
0x23
Not used
Selects the reference in manual reference selection mode.
Bit3
Bit2
Bit1
Bit0
Manually selected reference
Bit 3 ~ Bit 0
0
1 ~ 12
13
14
15
Selection
Freerun
Sync with Ref 1 ~ Ref 12
Holdover
Pseudo-Holdover
Reserved (for T0); Lock to T0 (for T4)
The register is read only in hard-wired manual switch mode. It indicates the current reference defined by pin
SRCSW and Hard_Wired_Switch_Pre_Selection.
Default value: 0
Selected_Ref, 0x24 (R)
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x24
Not used
Current selected reference
Indicates the current selected reference.
Field Value
0
1~12
13
14
15
Current selected reference
Freerun
Sync with Ref 1 ~ Ref 12
Holdover
Pseudo-Holdover
Reserved (for T0); Lock to T0 (for T4)
Page 42 of 66
Preliminary
Rev: 0.2
© Copyright the Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Date: April 3, 2014