Delta Tau Turbo PMAC Clipper, Hardware Reference Manual

Page: 65 / 84

Turbo PMAC Clipper Hardware Reference Manual
Laser Control Output 65
2. Issue SAVE and $$$ .
3. Set I6807=0 and I7007=3 on the same line.
4. Issue SAVE and $$$ .
This will change the clock source from DSPGate1 to DSPGate2. Once the clock source is switched, the
following settings will give you different PWM frequencies on the laser output while keeping the 30 kHz
PWM requirement for Filtered PWM outputs:
Laser Required PWM Frequecy (kHz)
Filtered PWM Frequecy (kHz) 30.0165
Phase Clock Divider
Servo Clock Divider
Settings
Phase Clock (kHz)
20.03138
I6800 = 2943
Servo Clock (kHz)
4.006276
I6801 = 0
I6802 = 4
I7000 = 981
I7001 = 2
I7002 = 4
10.01569027
1
5
Controlling the output
This section includes the memory address settings that you would need in order to change the PWM duty
cycle, PFM frequency, EQU output mode and EQU selection.
Note
Please Set I28=1 and issue a SAVE and $$$ before the following
settings become active. The I28=1 will disable the DISPLAY output
port which in this case will over-write the CTRL outputs.
#define CTRL0 M7000
#define CTRL1 M7001
#define CTRL2 M7002
#define CTRL3 M7003
#define PWM M7004
#define PFM M7005
#define CTRL_TYP M7006
#define CTRL_INV M7007
#define CTRL_DAT M7008
#define CTRL_DIR M7009
#define PWM_CMD_VAL M7010
#define PFM_CMD_VAL M7011
#define EQU1_ON M112=1M111=1
#define EQU1_OFF M112=0M111=1