Dolby Laboratories DP570 User Manual
Page 35
Controlling the DP570
Using the GPI/O Connector
Dolby
®
DP570 Multichannel Audio Tool User’s Manual
23
GPO Setup
Output pins 4 and 7–19 in Figure 3‐7 and Table are user‐defined. To define a function for
an output pin, enter the GPO Setup menu in the System Settings section 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.
Edge‐triggered signals are either positive or negative. Level‐triggered signals are either
high or low.
The Function menu lets you assign a function to the pin you have selected.
GPI Setup
Input pins 23–36 in Figure 3‐7 and Table 3‐8 are user‐defined. To define a function for an
input pin, enter the GPI Setup menu in the System Settings section 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 requires and can be set to Level or Edge. If set to Level, the pin is
triggered by a constant level; if set to Edge, the pin requires a pulse of 100 ms minimum
duration. Polarity can be set to Positive/High or Negative/Low. Edge‐triggered
signals are either positive or negative. Level‐triggered signals are either high or low.
6
Solo control input
High polarity
Level‐triggered
Active state: Engaged
24
User‐defined input
7
User‐defined output
25
User‐defined input
8
User‐defined output
26
User‐defined input
9
User‐defined output
27
User‐defined input
10
User‐defined output
28
User‐defined input
11
User‐defined output
29
User‐defined input
12
User‐defined output
30
User‐defined input
13
User‐defined output
31
User‐defined input
14
User‐defined output
32
User‐defined input
15
User‐defined output
33
User‐defined input
16
User‐defined output
34
User‐defined input
17
User‐defined output
35
User‐defined input
18
User‐defined output
36
User‐defined input
19
User‐defined output
37
Digital ground
a. Available only in units with the Cat. No. 548 Analog Option Card.
Table 3-8 GPI/O Pins Available
Pin
Function
Pin
Function