RESCTRL

Resistor Control

  0x10 8 PAC Write-Protection 0x0  
Parent topic: Register Description

Resistor Control

Bit  7 6 5 4 3 2 1 0  
  REFBUFLEVEL[1:0] POTMUX[2:0] RES1MUX RES1EN RES2OUT  
Access  R/W R/W R/W R/W R/W R/W R/W R/W  
Reset  0 0 0 0 0 0 0 0  

Bits 7:6 – REFBUFLEVEL[1:0]: Reference output voltage level select

Reference output voltage level select

Reference output voltage level select.

Value Reference Level
0x0 1.1v
0x1 1.25v
0x2 1.6v
0x3 Reserved

Bits 5:3 – POTMUX[2:0]: Potentiometer selection

Potentiometer selection

Resistor selection bits control a numeric potentiometer with eight fixed values.

Value R1 R2
0x0 14R 2R
0x1 12R 4R
0x2 8R 8R
0x3 6R 10R
0x4 4R 12R
0x5 3R 13R
0x6 2R 14R
0x7 1R 15R

Bit 2 – RES1MUX: Resistor 1 Mux

Resistor 1 Mux

These bits select the connection of R1 resistor of the potentiometer.

Value Name Description
0x0 DAC DACOUT
0x1 REFBUF REFBUF

Bit 1 – RES1EN: Resistor 1 Enable

Resistor 1 Enable

RES1EN = 1 is required in order to provide DAC/REFBUF to POSMUX, NEGMUX and RES1MUX.
ValueDescription
0 R1 disconnected from RES1MUX.
1 R1 connected to RES1MUX.

Bit 0 – RES2OUT: Resistor ladder To Output

Resistor ladder To Output

RES2OUT switch can only be closed if all OPAMPs are enabled.
ValueDescription
0 Swith open.
1 Switch closed.