GV7704 Datasheet, PDF (36/52 Pages) Semtech Corporation – Quad HD-VLC Receiver

4.11 Power Supply and Reset Timing
VDD18 powering precedes VDD12
1.8V
VDD18
Timing not critical
t_resetb
1.2V
VDD12
1.8V
t_GSPI_ready
RESET
CSR
(control & status registers)
Indeterminate states
reset states
CSR accessible
by GSPI
T_resetb >= 10ms
T_GSPI_ready = 10μs
Figure 4-19: Power Supply and Reset Timing
Note: To ensure correct digital functionality of the part the 1.8V supply must be
powered before the 1.2V supply.
GV7704
Preliminary Data Sheet Rev.3
PDS-060376
September 2015
www.semtech.com
36 of 52
Semtech