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MAX13171E Datasheet, PDF (31/38 Pages) Maxim Integrated Products – Multiprotocol, Pin-Selectable Data Interface Chipset | |||
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Multiprotocol, Pin-Selectable
Data Interface Chipset
GENERATOR
50â¦
125â¦
50â¦
Figure 25. Typical V.35 Interface
A
B
C
GND
BALANCED
INTERCONNECTING
CABLE
LOAD
CABLE
Aâ²
TERMINATION
50â¦
125â¦
50â¦
Bâ²
Câ²
GND
RECEIVER
Aâ²
R1
MAX13175E
52â¦
S1
R3
S2
127â¦
R2
52â¦
Bâ²
Câ²
A
R5
55kâ¦
R8
5kâ¦
R6
11kâ¦
S3
+-
1.4V
R7
11kâ¦
R4
B
55kâ¦
S1
S2
GND
MAX13171E
RECEIVER
Figure 26. V.35 Termination and Internal Resistance Networks
DTE/DCE Mode Applications
The MAX13171E/MAX13173E can be hardwired for
either DTE or DCE mode in one of two ways: a dedicat-
ed DTE or DCE port with an appropriate gender con-
nector, or a port with a connector that can be configured
for DTE or DCE operation by rerouting the signals to the
MAX13171E and MAX13173E, using a dedicated DTE
cable or dedicated DCE cable. The interface mode is
selected by logic outputs from the controller or from
jumpers to either VL or GND on the mode select inputs.
A dedicated DCE port using a DB-25 female connector
is shown in Figure 28. Figure 29 illustrates a dedicated
DTE port using a DB-25 male connector.
Figure 27 shows an application circuit with one com-
mon DB-25 connector that can be configured for either
DTE or DCE mode. The configuration requires separate
cables for proper signal routing in DTE or DCE opera-
tion. Figure 27 illustrates a DCE or DTE controller-selec-
table interface. The DCE/DTE and INVERT inputs switch
the portâs mode of operation (Tables 1, 2).
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