Fig. 9-1 Block Diagram Of A Digital Output Channel - ETAS ES930.1 User Manual

ETAS
9 Digital Output Channels ("DO" Connection)
The ES930.1 provides six TTL-compatible digital output channels at the "DO"
connection.
Each of the digital output channels can output signals independent of each
other (Digital Out, Pulse Out and PWM Out). In addition, the channels for the
control of the Half-bridges (power output stages "PS") can be used.
The output of each channel can be released or blocked with a separate signal
("Enable DO n"). A total of two output channels can each be assigned to one of
the LEDs U1 and U2.
9.1 Assemblies of Digital Output Channels
9.1.1 Overview
Digital Output Channel n
Overvoltage
Protection
Fig. 9-1
The digital output channels "DO 1" to "DO 6" of the ES930.1 feature an identical
design. Each channel consists of the following assemblies (see block diagram
in Fig. 9-1 on page 53):
• Counter unit
• Min pulse
• Output amplifier
• Overvoltage protection
• Min pulse adaptation detection
• LED control
• Power stage control
The functionality of all digital output channels can be configured separately.
9.1.2 Counter Unit
The counter unit generates digital output signals (Dig Out, Pulse Out, PWM Out)
with a 32-bit counter.
The counter unit is controlled by the digital output unit according to the config-
uration in the application program or the definition in the model for rapid proto-
typing applications.
ES930.1 - User Guide
Counter Unit
Block Diagram of a digital Output Channel
Digital Output Channels ("DO" Connection)
DO Enable n
Min Pulse
Min Pulse
Adaptation
Detection
LED Control
PS Control n
Power Stage
Control
Output Unit
Diagnosis
Unit
LED Control LED U1
Unit LED U2
Power Stage
53