XRT4500 Datasheet, PDF (68/99 Pages) Exar Corporation – MULTIPROTOCOL SERIAL NETWORK INTERFACE IC

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FIGURE 40. TYPICAL V.35 INTERFACE
XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.7
0.1uf
NOTE: All Resistors shown above are internal to the
XRT4500
TABLE 8: MUX1 CONNECTION TABLE
LOGIC LEVEL APPLIED TO CONTROL INPUT
SCENARIO
NUMBER _DCE/
DTE
NAME/PIN NUMBER
EC 2CK/ LP CK DT EN_O
3CK
INV INV SC
31 34 50 18 54 55 53
RX1D
1
SIGNAL SOURCE FOR OUTPUT NAME/PIN NUMBER
TX1B-TX1A
62, 63
RX2D
74
TX2B-TX2A
65, 64
RX3D
73
TR3B-TR3A
71, 70
1
0
1
0
1
1
1
1 RX1B-RX1A
TX1D
RX2B-RX2A
TX2D
TR3B-TR3A
X
2
1
1
0
1
1
1
1 RX1B-RX1A
TX1D
RX2B-RX2A
TX2D
X
TX3D
3
0
1
0
0
1
1
1
TX1D
RX1B-RX1A
TX2D
RX2B-RX2A TR3B-TR3A
X
4
1
1
0
0
1
1
1
TX1D
RX1B-RX1A
TX2D
RX2B-RX2A
X
TX3D
5
0
1
0
1
0
1
1 RX1B-RX1A
TX1D
RX2B-RX2A
TX2D
(TR3B-TR3A)*
X
6
1
1
0
1
0
1
1 RX1B-RX1A
TX1D
RX2B-RX2A
TX2D
X
(TX3D)*
7
0
1
0
0
0
1
1
TX1D
RX1B-RX1A
TX2D
RX2B-RX2A (TR3B-TR3A)*
X
8
1
1
0
0
0
1
1
TX1D
RX1B-RX1A
TX2D
RX2B-RX2A
X
(TX3D)*
9
0
1
1
1
1
1
1 RX1B-RX1A
TX1D
RX2B-RX2A
X
TR3B-TR3A
X
10
1
1
1
1
1
1
1 RX1B-RX1A
TX1D
TX3D
TX2D
X
TX3D
11
0
1
1
0
1
1
1
TX1D
RX1B-RX1A
TX2D
X
TR3B-TR3A
X
12
1
1
1
0
1
1
1
TX1D
RX1B-RX1A
TX2D
TX3D
X
TX3D
13
0
1
1
1
0
1
1 RX1B-RX1A
TX1D
RX2B-RX2A
X
(TR3B-TR3A)*
X
14
1
1
1
1
0
1
1 RX1B-RX1A
TX1D
TX3D
TX2D
X
(TX3D)*
15
0
1
1
0
0
1
1
TX1D
RX1B-RX1A
TX2D
X
(TR3B-TR3A)*
X
16
1
1
1
0
0
1
1
TX1D
RX1B-RX1A
TX2D
TX3D
X
(TX3D)*
17
0
1
X
1
1
1
1 RX1B-RX1A
TX1D
RX2B-RX2A
X
RX2B-RX2A
X
18
1
1
X
1
1
1
1 RX1B-RX1A
TX1D
TX2D
TX2D
X
X
19
0
1
X
0
1
1
1
TX1D
RX1B-RX1A
TX2D
X
TR3B-TR3A
X
20
1
1
X
0
1
1
1
TX1D
RX1B-RX1A
TX2D
RX2B-RX2A
X
X
65