Sundance SMT943 - Manual (Page 21)

User Manual SMT943 Page 21 of 54 Last Edited: 23/08/2011 17:24:00
0 0 No action.
1 1 Resets the DCM used to send samples to DAC channels.
Setting Bit 11 Description Trigger/nLed
0 0 Led13 flashes at a divided version of the ADCs clock.
1 1 Led13 shows the state of chab trigger. (on=trigger active)
Setting Bit 12 Description Trigger/nLed
0 0 Led12 flashes at a divided version of the DACs clock.
1 1 Led12 shows the state of chcd trigger. (on=trigger active)
Setting Bit 14 Description Tx-enable (chcd)
0 0 Precvents samples to reach the DAC (chcd)
1 1 Allows samples to reach the DAC (chcd)
Setting Bit 15 Description synch (chcd)
0 0
1 1
LED14 shows the lock status of the DCM used to collect samples from the ADC
channels. The DCM is locked when the LED is ON.
LED11 shows the lock status of the DCM used to send samples to the DAC channels.
The DCM is locked when the LED is ON.
CLOCK Register 0 0x10.
Clock Register 0 0x10
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 Reserved Reserved CP_DIR CP_MODE DELAY_PFD REFSELCNTRL VCXO_AUX_SEL
Default ‘0’ ‘0’ ‘0’ ‘0’ ‘00’ ‘0’ ‘0’
0 SECSEL_PRISEL Reserved Reserved
Default ‘00’ ‘00’ ‘0000’
Clock Register 0 0x10
Setting Bit 7:6 Description SECSEL_PRISEL Reference Input Selection
0 00 Nothing Selected
1 01 On-board Reference selected
2 10 External Reference selected
3 11 Auto Selection (Not recommended)
Setting Bit 8 Description VCXO_AUX_SEL VCXO/AUX Selection
0 0 On-board or External Reference. Selected (SECSEL_PRI_SEL)
1 1 On-board VCXO or External Clock selected.
Setting Bit 9 Description REFSELCNTRL Reference selection mode
0 0 Reference selection made externally.
1 1 Reference selection made internally (using SECSEL_PRISEL.).
Setting Bit 11:10 Description DELAY_PFD PFD pulse width
0 00