TDT RZ2 Manual page 49

System 3
(serial number < 2000) were limited to 8 bits. By default, all lines are configured
as inputs.
Data direction is configured using the
RZ6_Control macro in RPvdsEx and may
be controlled dynamically through the
macro input port. For more information on
using the RZ6_Control macro see the help
provided in the macro's properties dialog
box.
Byte A
Byte B
Byte C
The Digital I/O connector can be found on the front of the RZ6. See "RZ6 Multi
I/O Technical Specifications" on page 1-45, for pinout.
Voltage outputs and logic thresholds vary by type as shown in the table below.
Digital I/O Type
byte addressable
bit addressable
See "Working with BitIn - BitOut" in the "Digital I/O Circuit Design" section of the
RPvdsEx Manual
digital I/O. See "Working with WordIn -WordOut" in the "Digital I/O Circuit Design"
section of the
Bytes A and B of the digital I/O.
DSP Status Displays
The RZ6 includes status lights and a VFD (Vacuum Fluorescent Display) screen to
report the status of the individual processors.
Status Lights
LEDs report the status of the multiprocessor's individual DSPs and will be lit solid
green when the corresponding DSP is installed and running. The LED will be lit dim
green if the cycle usage on a DSP is 0%. If the demands on a DSP exceed 99%
of its capacity on any given cycle, the corresponding LED will flash red (~1 time
per second). For QZDSPs, the LED represents the highest core cycle usage.
Digital I/O Description
bits 0 - 7
bits 0 - 7
bits 0 – 7
Voltage Output
logic high
5 V
3.3 V
for more information on programming and addressing Byte C of the
RPvdsEx Manual
for more information on programming and addressing
Notes
byte addressable
byte addressable
bit addressable
Voltage Input
logic low logic high
0 V ≥ 2.5 V
0 V ≥ 1.5 V
1-43
logic low
0 - 2.45 V
0 - 1.4 V
RZ6 Multi I/O Processor