Rainbow-electronics DS2422 Manuale Utente Pagina 30

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DS2422
30 of 48
Figure 12-3. Memory/Control Function Flow Chart
69H
Read Mem.
[w/PW]&CRC
Master TX
64-Bits
[
Password
]
Master
TX Reset?
CRC OK?
Master RX "1"s
DS2422 sets Memory
Address =
(
T15:T0
)
Master RX Data Byte
from Memor
y
Address
Master TX
TA1
(
T7:T0
)
, TA2
(
T15:T8
)
Password
Accepted?
DS2422 Incre-
ments Address
Counte
r
End of Page?
Master RX CRC16 of
Command, Address, Data
(1
st
Pass); CRC16 of Data
(
Subse
q
uent Passes
)
End of
Memory?
Master TX
Reset?
Master TX
Reset
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
Decision made
b
y
DS2422
Decision made
b
y
Maste
r
From Figure 12
4
th
Part
To Figure 12
4
th
Part
To Figure 12
2
nd
Part
From Figure 12
2
nd
Part
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