Appendix A Pin Assignments
4 5
A.11 UNO-2050 Control Register
Table A-13: UNO-2050 control register
Base Address
7
6
5
4
3
2
1
0
Base+00H
R
Isolated Digital Input Status Register
DI7
DI6
DI5
DI4
DI3
DI2
DI1
DI0
Base+01H R/W
Isolated Digital Output Control/Status Register
DO7
DO6
DO5
DO4
DO3
DO2
DO1
DO0
Base+02H R/W
Interrupt Enable Control/Status Register
DI1EN
DI0EN
Base+03H R/W
Interrupt Triggering Edge Control/Status Register
DI1TE
DI0TE
Base+07H R/W
Interrupt Flag/Clear Register
CTR1F
CTR0F
DI1F
DI0F
Base+08H R/W
82C54 Chip Counter0 Register
Base+09H R/W
82C54 Chip Counter1 Register
Base+0BH R/W
82C54 Chip Control Register
Base+0CH R/W
Counter0 Start Control / Output Status Register
CTR0Out
CTR0Gate
Base+0DH R/W
Counter1 Start Control / Output Status Register
CTR1Out
CTR1Gate
Base+0EH R/W
Counter0 Setting Register
CTR0IntSet
CTR0OutSet CTR0GateSet CTR0CLKSet
Base+0FH R/W
Counter1 Setting Register
CTR32Set
S1
S0
CTR1IntSet
CTR1OutSig CTR1GateSig CTR1CLKSig
Base+10H R/W
LED Control Register
LEDS1
LEDS0
LEDEn
Base+11H R/W
Buzzer Control Register
SPKS1
SPKS0
SPKEn