Echelon FT 3150 Smart Transceiver - Manual (Page 29)

FT 3120 / FT 3150 Smart Transceiver Data Book 23
Additional Functions
• Off-chip RAM initialization
• Random number seed calculation
• System RAM setup
• Communication port initialization
• Checksum initialization
Figure 2.11 RESET Timeline for FT 3120 and FT 3150 Smart Transceivers
Scheduler Init
One-Second Timer Init
Checksum Init
Comm Port Init
System RAM Setup
Random Number Seed Calc
Off-Chip RAM
State Init
SERVICE Pin Init
Stack Init and BIST
S
pec
if
ie
d by
A
ppl
ic
at
io
n
Os
cil
lat
es
at
Div
id
e
by
2
o
f
CLK1
St
ab
le
Ad
dre
ss Refl
ect
ing
Fir
m
war
e Ex
ecu
tio
n
St
able Data Ref
lecti
ng
F
irm
war
e Ex
ecution
St
ab
le
R
/W
Re
fle
cti
ng Firmware
E
xe
cut
ion
RE
SET
IO
[
10:8, 3:0] SE
R
V
IC
E E
ADDR [1
5:0]
DA
TA
[7:0] R/W
W
ARNING:
NO
T T
O
SCALE
Reset
H
igh
or
Lo
w
Lo
w
En
abl
ed
IO
[
7:
4]
Ou
tpu
t
Pu
ll-Up
s
S
pec
if
ie
d by
A
ppl
ic
at
io
n
FT
3
150
O
N
LY
Osc
ill
ates
*NOTE: On power up, the oscillator will start running before RESET is released.
Oscillator Stabilization*
Oscillator Start-Up*