ADLINK PCIe-7300A User Manual
Page 110
Advertising
100
Appendix
Control Byte: (Base + 7, Base + 11)
X
SC1 & SC1 - Select Counter (Bit7 & Bit 6)
X
RL1 & RL0 - Select Read/Load operation (Bit 5 & Bit 4)
X
M2, M1 & M0 - Select Operating Mode (Bit 3, Bit 2, & Bit 1)
X
BCD - Select Binary/BCD Counting (Bit 0)
Note:
1. The count of the binary counter is from 0 up to 65,535.
Bit
7
6
5
4
3
2
1
0
SC1 SC0 RL1 RL0 M2 M1 M0 BCD
SC1 SC0 COUNTER
0
0
0
0
1
1
1
0
2
1
1
ILLEGAL
RL1 RL0
OPERATION
0
0
COUNTER LATCH
0
1
READ/LOAD LSB
1
0
READ/LOAD MSB
1
1
READ/LOAD LSB FIRST, THEN MSB
M2 M1 M0 MODE
0
0
0
0
0
0
1
1
x
1
0
2
x
1
1
3
1
0
0
4
1
0
1
5
0
BINARY COUNTER 16-BITS
1 BINARY CODED DECIMAL (BCD) COUNTER (4 DECADES)
Advertising