5.2.2 Group Mode Register

Figure 5-8 Group Mode Register

The 'Group Mode Register' is used to set the mode of the group's CF32006 master device. The slave device is always in mode 0.

The following modes can be selected for the master device.

CF32006 Modes
Mode	M2	M1	M0	Description
Counter
0	0	0	0	16-bit up/down counter (inhibits direction discriminator)
Direction Discriminator
1	0	0	1	Single count pulse synchroneous with Ua1 rising in forward direction and Ua1 falling in backward direction.
2	0	1	0	Single count pulse synchroneous with Ua2 rising in forward direction and Ua2 falling in backward direction.
3	0	1	1	Double count pulse synchroneous with Ua1 rising and falling.
4	1	0	0	Double count pulse synchroneous with Ua2 rising and falling.
5	1	0	1	Quadruple count pulse synchroneous with all edges.
Pulse Width Measurement
6	1	1	0	Ua1 is the gate signal. Ua2 is high for up counting and low for down counting. Count is synchroneous with rising clock.
Frequency Measurement
7	1	1	1	Ua1 is frequency signal to be measured. Ua2 is the gate signal of known time interval. Count is synchroneous with rising edge of Ua1

CC133 - 12 Channel Incremental Encoder Interface With Isolated Inputs - 30 SEP 1996