sis3820 create name ?option value ...?
sis3820 config name option value ?...?
sis3820 cget name ?option?
The SIS3820 scalers has the ability to run two channels (0 and 16) as 48 bit counters this, along with their external latching function, makes them suitable as event timestamp modules. The modules can also output a clock train and, therefore, provide a common clock input both to themselves and other sources of a multi-source system.
When used, the module contributes four longwords to the event when read. The low 32 bit of channel zero, followed by its high 16 bits (in a long word with the top 16 bits zero), followed by the same for channel 16:
+------------------------------------------------+
| Least significant 32 bits of ch 0 |
+-----------------------+------------------------+
| 0 | top 16 bits of ch 0 |
+-----------------------+------------------------+
+------------------------------------------------+
| Least significant 32 bits of ch 16 |
+-----------------------+------------------------+
| 0 | top 16 bits of ch 16 |
+-----------------------+------------------------+
Configuration options are:
-base base-addressSpecifies the base address of the module in VME space.
-outputmodeoutput-modeSpecifies the meaning of the outputs of the module. This can be one of:
clock50MHz - Output 5 echoes the latch signal. Ouptut 7 is a 50MHz clock.k <
LNEandLed - Output5 echos the latch signal and output 8 application specific LED. The user has no control over the LED in this software.
clock2x10Mhz - Output 5 is the latch, outputs 6 and 7 are a 10MHz clock, while output 8 is the application LED.
clock1x10Mhz - Output 5 is the latch, Output 6 is a 10MHz clock. The other outputs are not used.