General Purpose Input Output; Gpio Connectors; Gpio Pinout - Kaya Instruments Predator II CoaXPress Hardware Reference And Installation Manual

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).
Connector
26-pin, 3-row D-Sub
26-pin, dual row pin header

9.2 GPIO Pinout

The pinout for each of these connectors is as described:
Pin Signal Name
1 LVDS Input 0p
2 LVDS Input 0n
3
LVDS Input 1p
4 LVDS Input 1n
5 LVDS Output 0p
6
LVDS Output 0n
7 LVDS Output 1p
8 LVDS Output 1n
9
Optocoupled Output 0
10 Optocoupled Output 1
11 Optocoupled Output 2
12
Optocoupled Output 3
13 Optocoupled Input 0
14
Optocoupled Input 1
15 Optocoupled Input 2
16 Optocoupled Input 3
17
Optocoupled GND
18 GND
19 TTL 0
20 TTL 1
21 TTL 2
22 TTL 3
23 LVTTL 0
24 LVTTL 1
25 LVTTL 2
26 LVTTL 3
Figure 5 – GPIO connector schematics
3-row D-Sub connector (left) and dual row pin header (right)
Manufacturer's Part Number
181-026-213R561
CH87262V200
Table 7 – GPIO connectors part numbers
Function Electrical
Standard
LVDS input LVDS
LVDS input LVDS
LVDS input LVDS
LVDS input LVDS
LVDS output LVDS
LVDS output LVDS
LVDS output LVDS
LVDS output LVDS
Opto-Isolated output Up to 70V
Opto-Isolated output Up to 70V
Opto-Isolated output Up to 70V
Opto-Isolated output Up to 70V
Opto-Isolated input Up to 70V
Opto-Isolated input Up to 70V
Opto-Isolated input Up to 70V
Opto-Isolated input Up to 70V
External GND
Board GND
GPIO TTL (Open-drain)
GPIO TTL (Open-drain)
GPIO TTL (Open-drain)
GPIO TTL (Open-drain)
GPIO LVTTL
GPIO LVTTL
GPIO LVTTL
GPIO LVTTL
Table 8 – GPIO connector pinout
Description
Positive signal of LVDS pair
Positive signal of LVDS pair
Negative signal of LVDS pair
Negative signal of LVDS pair
Positive signal of LVDS pair
Positive signal of LVDS pair
Negative signal of LVDS pair
Negative signal of LVDS pair
Optically isolated outputs
Optically isolated outputs
Optically isolated outputs
Optically isolated outputs
Optically isolated inputs
Optically isolated inputs
Optically isolated inputs
Optically isolated inputs
Ground signal for opto-isolated signals
on this connector
Reference ground signal
General Purpose IO
General Purpose IO
General Purpose IO
General Purpose IO
General Purpose IO
General Purpose IO
General Purpose IO
General Purpose IO
Page no. 12 | General Purpose Input Output