User Manual

DS1862
XFP Laser Control and Digital Diagnostic IC
8 _____________________________________________________________________
Timing Diagrams
V
CC
> V
POA
TX-D
I
BIASSET
I
MODSET
t
INIT
P-DOWN/RST
INTERRUPT
RESET-DONE
RESET-DONE
READ-FLAGS
t
INIT ON
t
PDR-OFF
t
INIT OFF
t
INIT
READ-FLAGS
Figure 1. Power-On Initialization with P-DOWN/RST Asserted and TX-D/SOFT-TX-D Not Asserted
Figure 2. Power-On Initialization with P-DOWN/RST Not Asserted and TX-D/SOFT-TX-D Not Asserted (Normal Operation)
V
CC
> V
POA
TX-D
I
BIASSET
I
MODSET
t
INIT
P-DOWN/RST
INTERRUPT
t
INIT ON
t
INIT OFF
READ-FLAGS
RESET-DONE