Table 6. doav and doinv operation, Table 7. do output programmed by dobit, Figure 9. equivalent do logic – Rainbow Electronics MAX14821 User Manual
Page 24
���������������������������������������������������������������� Maxim Integrated Products 24
MAX14821
IO-Link Device Transceiver
Table 6. DoAv and DoInv Operation
Note 1: Low is when V
TXC
, V
TXQ
, OR V
LO
= 0V; high is when V
TXC
, V
TXQ
, or V
LO
= V
L
.
Note 2: Low is when C/Q or DO < 8V; high is when C/Q or DO >13V.
Table 7. DO Output Programmed by DoBit
X = Don’t care.
Figure 9. Equivalent DO Logic
DoAv
DoInv
TXC AND TXQ
(NOTE 1)
LO
(NOTE 1)
DO
(NOTE 2)
C/Q
(NOTE 2)
0
0
Low
Low
High
High
0
0
Low
High
Low
High
0
0
High
Low
High
Low
0
0
High
High
Low
Low
0
1
Low
Low
Low
High
0
1
Low
High
High
High
0
1
High
Low
Low
Low
0
1
High
High
High
Low
1
0
Low
Low
Low
High
1
0
Low
High
Low
High
1
0
High
Low
High
Low
1
0
High
High
High
Low
1
1
Low
Low
High
High
1
1
Low
High
High
High
1
1
High
Low
Low
Low
1
1
High
High
Low
Low
LO
DoBit
DoPP
DoN/P
DO CONFIGURATION
DO STATE
High
0
1
X
Push-pull
Low
High
1
1
X
Push-pull
High
High
0
0
0
PNP
Off, DO is high impedance
High
1
0
0
PNP
On, DO is high
High
0
0
1
NPN
On, DO is low
High
1
0
1
NPN
Off, DO is high impedance
Low
X
X
X
See Table 6
See Table 6
LO
DoBit
DO
DoInv