[hpsdr] Interfacing to ANAN-10/Hermes J16

[Bill Diaz]

The Hermes schematic detail for J16 pins does not correspond to keyed 
IDC ribbon cable conventions.  The following lists the IDC pin numbers 
and corresponding J16 pin functions.

Hermes J16 pinout for IDC ribbon cable.
(Numbers in parentheses are J16 Pinout shown on schematic)

1.  User Digital input 3: Connected to 3.3V via 1K pullup resistor (26)
2.  Open-drain PTT output (25).
3   OCREf Open-Collector reference/flyback diodes (24)
4.  OC6 User open-collector output 7 (23)
5.  OC5 User open-collector output 6 (22)
6.  OC4 User open-collector output 5 (21)
7.  OC3 User open-collector output 4 (20)
8.  OC2 User open-collector output 3 (19)
9.  OC1 User open-collector output 2 (18).
10. OC0 User open-collector output 1 (17)
11  User Digital input 2: Connected to 3.3V via 1K pullup resistor (16)
12  Right channel speaker Pair with pin 13 (15)
13  Right channel speaker, pair with pin 12 (14).
14  User Digital input 4: connnected to 3.3V via 1K pullup resistor (13)
15  User Analogue input 2: 0-3V max (12)
16  User Analogue input 1: 0-3V max (11)
17  Analogue Ground (10)
18  User Digital input 1: Connected to 3.3V via 1K pullup resistor (9)
19  Right channel line Out (8)
20  Left channel line Out (7)
21  Left channel phones output (6)
22  Right channel phones output(5)
23  Right channel line-level audio input (4)
24  Left channel line-level audio input (3)
25  Analogue Ground (2)
26  PTT : connected to 3.3V via 1k pullup resistor(1) (same as Mic PTT, 
J2 if JP6 used)

Bill KC9XG