STC5423 Datasheet, PDF (40/60 Pages) Connor-Winfield Corporation – Synchronous Clock for SETS

STC5423
Synchronous Clock for SETS
Data sheet
In manual mode, the selected reference is out of the pull-in range, as specified in the register
Disqualification_Range (0x10). OOP will determine if the reference is to be followed
0 = Follow, 1 = Stop following at pull-in range boundary
Hard_Wired_Switch (T0 timing generator only)
0 = Not Hard-wired Switch, selects reference in manual selection mode or auto selection mode
1 = Hard-wired Switch, selects reference in hard-wired manual selection mode by using control pin
SRCSW to fast manual switch between two pre-selected reference inputs. See the register
Hard_Wired_Switch_Pre_Selection (0x1D) for details.
Default value: 0
Loop_Bandwidth, 0x21 (R/W)
Address
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
0x21
Bandwidth select
Sets each timing generator’s loop bandwidth, select between timing generator T0 and T4 at the register T0/
T4_Tag_select :
Default value: 6 (1.7Hz)
Auto_Elect_Ref, 0x22 (R)
Field Value
0
1
2
3
4
5
6
7
8
9
10
11~255
Bandwidth, Hz
103
52
27
13
6.7
3.4
1.7
0.84
0.42
0.21
0.10
Reserved
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 reference elector according to
revertivity status, and each reference’s priority and qualification. Reference auto-elector keep electing the ref-
erence even though manual reference mode is selected.
Bit 3 ~ Bit 0
0
1
2
3~12
Selection
Freerun
Sync with Ref1
Sync with Ref 2
Reserved
Page 40 of 60 TM114
Rev:1.4
© Copyright the Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Date: October 24, 2011