Discrete I/O - Garmin G900X Installation And Maintenance Manual

A.3.9.5 Ethernet HSDB
Pin Name
ETHERNET OUT A
ETHERNET OUT B
ETHERNET IN A
ETHERNET IN B
This Ethernet based high speed data bus (HSDB) provides communications capability with the GDU.
HSDB meets the hardware aspects of IEEE standard 802.3 for 10 base T Ethernet communications.
A.3.10 Discrete I/O
Pin Name
DISCRETE IN
DISCRETE IN*
DISCRETE OUT*
ANNUNCIATE
ANNUNCIATE
DISCRETE IN* pins:
INACTIVE: 10 ≤  V in ≤  3 3VDC or Rin ≥ 100kΩ
ACTIVE: Vin ≤ 1.9VDC with ≥  7 5 uA sink current, or Rin ≤ 375Ω
Sink current is internally limited to 200 uA max for a grounded input
DISCRETE IN pins:
INACTIVE: Vin ≤ 3.5VDC
ACTIVE: 10 ≤  V in ≤  3 3VDC with ≥  7 5 uA source current
Source current is internally limited to 1.5 mA max for a 10-33VDC input
DISCRETE OUT pins:
INACTIVE: Floating (can be pulled up to externally sourced Vout in the range 0 ≤  V out ≤  3 3VDC)
Leakage current in the INACTIVE state is typically ≤ 10 uA to ground
ACTIVE: Vout ≤ 0.5VDC with ≤  2 0 mA sink current
Sink current must be externally limited to 20 mA max
ANNUNCIATE pins:
INACTIVE: Floating (can be pulled up to externally sourced Vout in the range 0 ≤  V out ≤  3 3VDC)
Leakage current in the INACTIVE state is typically ≤ 250 uA to ground
ACTIVE: Vout ≤ 0.5VDC with ≤  5 00 mA sink current
Sink current must be externally limited to 500 mA max
Page A-36
Revision D
Connector
P603
P603
P603
P603
Connector
P604
P605
P604
P605
P605
P606
P605
P604
G900X/G950 Installation and Maintenance Manual – Pinouts
Pin I/O
2 Out
3 Out
76 In
77 In
Pin I/O
4, 5, 10, In
15, 16
3, 12, 16, In
50-51,
60, 74
7-9, 12- In
14, 17-
21, 24
37-46, In
49, 52-
55, 59,
73
47, 68-70 Out
67-75, 77 Out
71, 72 Out
6, 25-44 Out
190-00719-00