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Data Interfaces
Pin #
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
A.3.4.2
Auxiliary, J5
This port provides for other modem-specific signals not otherwise defined on the data
connectors.
A.3.4.2.1
Connector Pinout, J5
The connector is a sub-miniature, 9-pin D female, with threaded jack nuts (refer to
Table A-10 for connector pinout).
Differential pairs are LVDS compatible.
Note: The sense of differential signal pairs is a logic "1" when "B" is positive with
respect to "A."
A–18
Signal Function/Name
System GND/REFCLKB
Data 7 A(MSB/Serial)
Data 6 A
Data 5 A
Data 4 A
Data 3 A
Data 2 A
Data 1 A
Data 0 A
DVALID A
SYNC A
Cable Shield
Clock B
System GND/REFCLKA
Data 7 B (MSB/Serial)
Data 6 B
Data 5 B
Data 4 B
Data 3 B
Data 2 B
Data 1 B
Data 0 B
DVALID B
SYNC B
Type
Comment
O/GND
Mod,
Jumper selectable
SCT output for Modulator
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod, Modulator Ignores
I
Mod
I
Mod
I
Mod
O/GND
Mod/Demod
Jumper selectable
SCT output for Modulator
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
I
Mod
SDM-2020 Satellite Demodulator
Rev.3
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