Version 1.0 06/2001 |
/SEL=0 (ZCTRL register), the high byte can be read out when set /SEL=1 (ZCTRL register).
Register | Add. | R/W | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
INDEX | 0x04 | R |
|
|
|
|
| ZI | YI | XI |
The index input C+/C- can read out from this register. These bits are active high.
XI : indicate the index of
YI : indicate the index of
ZI : indicate the index of
Register | Add. | R/W | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
XCTRL | 0x00 | W |
|
| S1 | S0 |
| /RST | /INH | /SEL |
YCTRL | 0x01 | W |
|
| S1 | S0 |
| /RST | /INH | /SEL |
ZCTRL | 0x02 | W |
|
| S1 | S0 |
| /RST | /INH | /SEL |
The XCTRL,YCTRL and ZCTRL register are control registers for
axis,
/RST : reset counter to zero
/INH : inhibit the counter data latch. This bit must be set 0 before read out the counter value to inhibit the counter data latch to DATA registers.
/SEL : to select low byte or high byte for reading the counter value. 0 : low byte
1 : high byte
S1, S0 : to select counting mode 00 : quadrant counting mode
A
B
counter | 1 | 2 | 3 | 4 | 5 | 6 |
Quadrant Counting Mode
Fig(2) Quadrant counting mode
01 : CW/CCW counting mode
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