Data Translation DT9835, User Manual

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Chapter 2
8
Figure 1 shows a block diagram of the DT9835 function module. Note
that bold entries indicate signals you can access.
Figure 1: Block Diagram of the DT9835 Function Module
500 V Isolation Barrier
Isolated Power
Power Control
DC to DC
Microcontroller
USB Interface
+5 V D + D - GND
High-Speed
Isolated Data Path
Controller and
Digital Filters
32 Digital Inputs WIth 100 k
Ω Ω Ω Ω
Pull-Ups to +5V_I
WIth Back EMF Protection
64 Digital I/O WIth 100 k
Ω Ω Ω Ω
Pull-Ups to +5V_I
WIth Back EMF Protection
Pins 64 to 96
Lines 63 to 95
Pins 1 to 64
Lines 0 to 63
Isolated
Common
Pins 50 and 100
+5 V
In/Out
Pins 49 and 99