ICS1523
Name: Input Control
Register: 0 h
Bit
4
Name
Fbk_Sel
Description
External Feedback Select
0 = Internal Feedback (default)
1 = External Feedback
Function Output Select Selects re-clocked output to FUNC (pin 15).
0 = Recovered HSYNC (default). Re-generated HSYNC output.
1 = External HSYNC. Schmitt-trigger conditioned input from HSYNC (pin 7).
Enable PLL Lock Status Output
on LOCK/REF pin
Enable DPA Lock Status Output
on LOCK/REF pin
Bits 6,7 enable multiple functions
at LOCK/REF, (pin 14)
EnPLS EnDLS IN_SEL
LOCK/REF(14)
0
0
N/A
0
0
1
N/A 1 if DPA locked, 0 otherwise
1
0
N / A 1 i f P L L l o c ke d , 0 o t h e r w i s e
Post Schmitt trigger
1
1
0
HSYNC(7) XOR Ref_Pol
1
1
1
F
osc
¸
Osc_Div
5
Func_Sel
6
7
EnPLS
EnDLS
8
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
