Table 3-8, Gpi/o pins available – Dolby Laboratories Multichannel Audio Tool DP570 User Manual
Page 36
20
Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Controlling the DP570
lists the pins available for GPO and GPI functions.
GPO Setup
are user‐defined. To define a function
for an output pin, enter the GPO Setup menu in the System Settings portion of the
Setup
menu, use the arrow buttons to select the pin number you wish to define, and press
Enter
. Three submenus are available: Trigger, Polarity, and Function. Trigger
defines the type of signal the pin produces and can be set to Level or Edge. If set to Level,
the pin produces a constant level; if set to Edge, the pin produces a pulse of about 200 ms
duration (185 ms minimum). Polarity can be set to Positive/High or Negative/Low.
Table 3-8
GPI/O Pins Available
Pin
Function
Pin
Function
1
+5 V (150 mA)
20
Volume Control Shaft Encoder
A input
High polarity
Edge‐triggered
2
Fault output
Low polarity
Level‐triggered
Active state: Fault
21
Volume Control Shaft Encoder
B input
High polarity
Edge‐triggered
3
Error output
High polarity
Level‐triggered
Active state: Error
22
Volume Control Shaft Encoder
present input
Low polarity
Level‐triggered
Active state: Volume Control
Shaft Encoder present
4
User‐defined output
23
User‐defined input
5
Solo tally output
a
High polarity
Level‐triggered
Active state: Enabled
a Available only in units with the Cat. No. 548 Analog Ouput Card.
24
User‐defined input
6
Solo control input
High polarity
Level‐triggered
Active state: Engaged
25
User‐defined input
7
User‐defined output
26
User‐defined input
8
User‐defined output
27
User‐defined input
9
User‐defined output
28
User‐defined input
10
User‐defined output
29
User‐defined input
11
User‐defined output
30
User‐defined input
12
User‐defined output
31
User‐defined input
13
User‐defined output
32
User‐defined input
14
User‐defined output
33
User‐defined input
15
User‐defined output
34
User‐defined input
16
User‐defined output
35
User‐defined input
17
User‐defined output
36
User‐defined input
18
User‐defined output
37
Digital ground
19
User‐defined output