User manual

RS232-ADC16/24
REG_SYSCLK 0x000F
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
clock
SYS
select
The system clock can be choosen in five steps from 3.0625 MHz to 49 MHz.
Any register setting outside range will result in default clock
SYS
at 12.25 MHz.
Altering the system clock will cause a short delay before sending the boot
message. All pin and register settings remain untouched by clock change.
Changing clock and baud rate together (by Write Multiple Registers) will result
in sending one boot message not two.
Using 12.25 MHz as system clock is recommended since this offers best results
in dependence to ADC output rate. Increasing clock
SYS
will provide better
reaction time and higher output rates at cost to accuracy. Decreasing clock
SYS
mainly lowers power consumption.
REG_SYSCLK Resulting system
clock in MHz
0 3.0625
1 6.125
2 12.25
3 24.5
4 49
Note : Setting REG_SYSCLK to 0 will reduce the maximal baud rate to 57600.
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