Kaya Instruments Chameleon II, Hardware Reference And Installation Manual

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Page no. 12 | General Purpose Input Output
9 General Purpose Input Output
9.1 GPIO Connectors
Our second-generation cards come with one of two possible GPIO connectors: the 26-pin, 3-row D-Sub connector
accessible from the front bracket (Komodo II CoaXPress and Predator I CoaXPress) and the 26-pin, dual row pin
header connector that is located on the PCB itself (Komodo II CLHS and Chameleon II CoaXPress).
Figure 5 – GPIO connector schematics
3-row D-Sub connector (left) and dual row pin header (right)
Connector Manufacturer’s Part Number
26-pin, 3-row D-Sub 181-026-213R561
26-pin, dual row pin header CH87262V200
Table 7 – GPIO connectors part numbers
9.2 GPIO Pinout
The pinout for each of these connectors is as described:
Pin Signal Name Function Electrical
Standard Description
1 LVDS Input 0p LVDS input LVDS Positive signal of LVDS pair
2 LVDS Input 0n LVDS input LVDS Positive signal of LVDS pair
3 LVDS Input 1p LVDS input LVDS Negative signal of LVDS pair
4
LVDS Input 1n LVDS input LVDS Negative signal of LVDS pair
5
LVDS Output 0p LVDS output LVDS Positive signal of LVDS pair
6
LVDS Output 0n LVDS output LVDS Positive signal of LVDS pair
7 LVDS Output 1p LVDS output LVDS Negative signal of LVDS pair
8 LVDS Output 1n LVDS output LVDS Negative signal of LVDS pair
9 Optocoupled Output 0 Opto-Isolated output Up to 70V Optically isolated outputs
10 Optocoupled Output 1 Opto-Isolated output Up to 70V Optically isolated outputs
11 Optocoupled Output 2 Opto-Isolated output Up to 70V Optically isolated outputs
12
Optocoupled Output 3 Opto-Isolated output Up to 70V Optically isolated outputs
13
Optocoupled Input 0 Opto-Isolated input Up to 70V Optically isolated inputs
14
Optocoupled Input 1 Opto-Isolated input Up to 70V Optically isolated inputs
15 Optocoupled Input 2 Opto-Isolated input Up to 70V Optically isolated inputs
16 Optocoupled Input 3 Opto-Isolated input Up to 70V Optically isolated inputs
17 Optocoupled GND External GND Ground signal for opto-isolated signals
on this connector
18 GND Board GND Reference ground signal
19 TTL 0 GPIO TTL (Open-drain) General Purpose IO
20 TTL 1 GPIO TTL (Open-drain) General Purpose IO
21 TTL 2 GPIO TTL (Open-drain) General Purpose IO
22 TTL 3 GPIO TTL (Open-drain) General Purpose IO
23 LVTTL 0 GPIO LVTTL General Purpose IO
24 LVTTL 1 GPIO LVTTL General Purpose IO
25 LVTTL 2 GPIO LVTTL General Purpose IO
26 LVTTL 3 GPIO LVTTL General Purpose IO
Table 8 – GPIO connector pinout