Specifications

APPENDIX C: EVENT PROGRAMMING
Page 204 MRC-565 Packet Data Radio Operations & Maintenance
External Input/Outputs (XIO)
When the XIO controller is attached to the MRC-565 or the MRC-565C, then 8 additional
discrete inputs, 10 discrete outputs, 2 counters and 6 analog inputs are available. The controller
uses three I/O lines, MCLK, MDIR and MSET, for a high speed synchronous port, and can input
and output packets for communicating with the XIO controller.
External Signal Name
Direction or Function
Internal Signal
Name
XIN1
Discrete Input
Port C, bit 2
XIN2
Discrete Input
Port C, bit 1
XIN3
Discrete Input
Port B, bit 7
XIN4
Discrete Input
Port B, bit 6
XIN5
Discrete Input
Port B, bit 5
XIN6
Discrete Input
Port B, bit 4
XIN7
Discrete Input
Port B, bit 3
XIN8
Discrete Input
Port A, bit 4
XIC1
High Speed Input Counter
---
XIC2
High Speed Input Counter
---
XOUT1
Discrete Output
Port D, bit 7
XOUT2
Discrete Output
Port D, bit 6
XOUT3
Discrete Output
Port D, bit 5
XOUT4
Discrete Output
Port D, bit 4
XOUT5
Discrete Output
Port D, bit 3
XOUT6
Discrete Output
Port D, bit 2
XOUT7
Discrete Output
Port D, bit 1
XOUT8
Discrete Output
Port D, bit 0
XOUT9
Discrete Output
Port C, bit 7
XOUT10
Discrete Output
Port C, bit 8
XADC1
10-Bit Analog Input
Port A, bit 0
XADC2
10-Bit Analog Input
Port A, bit 1
XADC3
10-Bit Analog Input
Port A, bit 5
XADC4
10-Bit Analog Input
Port E, bit 0
XADC5
10-Bit Analog Input
Port E, bit 1
XADC6
10-Bit Analog Input
Port E, bit 2