XRT4000 Datasheet, PDF (27/46 Pages) Exar Corporation – Universal Multiprotocol Serial Interface

XRT4000
Scenario Number
Logic Level Applied to
Control Input Name/Pin Number
Signal Source for
Output Name/Pin Number
DCE/ EC* 2CK/ LP*
CK
DT
EN
DTE*
3CK*
INV* INV* _OSC*
RX1D
TX1B-TX1A
RX2D
TX2B-TX2A
RX3D
TR3B-TR3A
39
42
65
22
67
68
66
100
77,78
93
80,79
90
88,87
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
4
1
1
0
0
1
1
1
TX1D
TX1D
RX1B-RX1A
RX1B-RX1A
TX2D
TX2D
RX2B-RX2A
RX2B-RX2A
TR3B-TR3A
X
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
12
1
1
1
0
1
1
1
TX1D
TX1D
RX1B-RX1A
RX1B-RX1A
TX2D
TX2D
X
TX3D
TR3B-TR3A
X
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
15
0
1
1
0
0
1
1
TX1D
RX1B-RX1A
TX2D
TX2D
X
X
(TR3B-TR3A)*
(TX3D)*
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
21
0
1
X
1
0
1
1
RX1B-RX1A
TX1D
RX2B-RX2A
X
(RX2B-RX2A)*
X
22
1
1
X
1
0
1
1
RX1B-RX1A
TX1D
(TX2D)*
23
0
1
X
0
0
1
1
TX1D
RX1B-RX1A
TX2D
TX2D
X
X
X
(RX2B-RX2A)*
X
24
1
1
X
0
0
1
1
TX1D
NOTE 1
TX2D
TX2D
X
X
25
0
0
0
1
1
1
1
RX1B-RX1A
TX1D
RX2B-RX2A TR3B-TR3A TR3B-TR3A
X
26
1
0
0
1
1
1
1
RX1B-RX1A
TX1D
RX2B-RX2A
TX3D
X
TX3D
27
0
0
0
0
1
1
1
TX1D
RX1B-RX1A TR3B-TR3A RX2B-RX2A TR3B-TR3A
X
28
1
0
0
0
1
1
1
TX1D
RX1B-RX1A
TX3D
RX2B-RX2A
X
TX3D
29
0
0
0
1
0
1
1
RX1B-RX1A
TX1D
RX2B-RX2A (TR3B-TR3A)* (TR3B-TR3A)*
X
30
1
0
0
1
0
1
1
RX1B-RX1A
TX1D
RX2B-RX2A
TX3D
X
(TX3D)*
31
0
0
0
0
0
1
1
TX1D
RX1B-RX1A (TR3B-TR3A)* RX2B-RX2A (TR3B-TR3A)*
X
32
1
0
0
0
0
1
1
TX1D
RX1B-RX1A
TX3D
RX2B-RX2A
X
(TX3D)*
33
0
0
1
1
1
1
1
RX1B-RX1A
TX1D
RX2B-RX2A
X
TR3B-TR3A
X
34
1
0
1
1
1
1
1
RX1B-RX1A
TX1D
TX3D
TX3D
X
TX3D
35
0
0
1
0
1
1
1
TX1D
RX1B-RX1A TR3B-TR3A
X
TR3B-TR3A
X
36
1
0
1
0
1
1
1
TX1D
RX1B-RX1A
TX3D
TX3D
X
TX3D
37
0
0
1
1
0
1
1
RX1B-RX1A
TX1D
RX2B-RX2A
X
(TR3B-TR3A)*
X
38
1
0
1
1
0
1
1
RX1B-RX1A
TX1D
TX3D
TX3D
X
(TX3D)*
39
0
0
1
0
0
1
1
TX1D
RX1B-RX1A (TR3B-TR3A)*
X
(TR3B-TR3A)*
X
40
1
0
1
0
0
1
1
TX1D
RX1B-RX1A
TX3D
TX3D
X
(TX3D)*
41
0
0
X
1
1
1
1
RX1B-RX1A
TX1D
RX2B-RX2A
X
RX2B-RX2A
X
42
1
0
X
1
1
1
1
RX1B-RX1A
TX1D
TX3D
TX3D
X
X
43
0
0
X
0
1
1
1
TX1D
RX1B-RX1A RX2B-RX2A
X
RX2B-RX2A
X
44
1
0
X
0
1
1
1
TX1D
RX1B-RX1A
TX3D
TX3D
X
X
45
0
0
X
1
0
1
1
RX1B-RX1A
TX1D
RX2B-RX2A
X
(RX2B-RX2A)*
X
46
1
0
X
1
0
1
1
RX1B-RX1A
TX1D
(TX3D)*
TX3D
X
X
47
0
0
X
0
0
1
1
TX1D
RX1B-RX1A RX2B-RX2A
X
RX2B-RX2A
X
48
1
0
X
0
0
1
1
TX1D
NOTE 1
TX3D
TX3D
X
X
X
X
X
X
X
0
1
INVERT
INVERT
UNCHANGED UNCHANGED UNCHANGED UNCHANGED
0
1
X
0
X
X
0
UNCHANGED UNCHANGED UNCHANGED UNCHANGED
32-64 kHz UNCHANGED
0
0
X
0
X
X
0
UNCHANGED UNCHANGED
32-64 kHz UNCHANGED
32-64 kHz UNCHANGED
Table 6. MUX1 Connection Table
Table entries are inputs to MUX1.
Column headings are outputs.
Signal names ending with A or B are analog inputs or outputs.
Rev. 1.00
- 27 -