Datasheet

804
32142D–06/2013
ATUC64/128/256L3/4U
31.7.21 Discharge Current Source Register
Name:
DICS
Access Type: Read/Write
Offset: 0x5C
Reset Value: 0x00000000
• FSOURCES: Force Discharge Current Sources
When FSOURCES[n] is 0, the corresponding discharge current source behavior depends on SOURCES[n].
When FSOURCES[n] is 1, the corresponding discharge current source is forced to be enabled continuously. This is useful for
testing or debugging but should not be done during normal acquisition.
• GLEN: Global Enable
0: The current source module is globally disabled.
1: The current source module is globally enabled.
• INTVREFSEL: Internal Voltage Reference Select
0: The voltage for the reference resistor is generated from the internal band gap circuit.
1: The voltage for the reference resistor is VDDIO/3.
• INTREFSEL: Internal Reference Select
0: The reference current flows through an external resistor on the DIS pin.
1: The reference current flows through the internal reference resistor.
• TRIM: Reference Current Trimming
This field is used to trim the discharge current. 0x00 corresponds to the minimum current value, and 0x1F corresponds to the
maximum current value.
• SOURCES: Enable Discharge Current Sources
When SOURCES[n] is 0, the corresponding discharge current source is disabled.
When SOURCES[n] is 1, the corresponding discharge current source is enabled at appropriate times during acquisition.
31 30 29 28 27 26 25 24
FSOURCES[7:0]
23 22 21 20 19 18 17 16
GLEN-----
INTVREFSEL
INTREFSEL
15 14 13 12 11 10 9 8
--- TRIM
76543210
SOURCES[7:0]