User's Manual

Table Of Contents
MP9310 User’s Guide
10
Digital Input/Output Setup
The MP9310 is equipped with two logic-level input signals (DIN1/DIN2) and two open-
collector output signals (DOUT1/DOUT2). To activate the digital inputs apply a
minimum 1.5 Volt differential across the DINn+ and DINn-. The outputs require a 4.7K
Ohm pull-up to 5V.
Refer to the SAMSys Forth Programming Language Reference Guide for programming
information.To set up the I/Os to trigger tag reading and indicated tag sensing, refer to the
CHUMP Reference Guide and the Protocol Configuration Word (PCW) register.
Figure 7–Digital Input and Output Port Configuration
4.7K
Digital Inputs
DIN1+
DIN1-
4.7K
Typical input
drive circuit
(user supplied)
Vref
DIN2+
DIN2-
Digital Outputs
DOUT1
Filter
4.7K
+5 Vdc
Typical output circuit
(user supplied)
DOUT2
Output
Common
60 V max
500 mA max
Non-inductive
Typical Filter
Filter