Silicon Labs /EFM32PG23B200F128IM40 /LCD_S /BIASCTRL

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Interpret as BIASCTRL

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0RESISTOR 0BUFDRV 0BUFBIAS 0 (STEPDOWN)MODE 0VLCD0 (DVDD)VDDXSEL 0 (UNGATE)LCDGATE 0 (DMADISABLE)DMAMODE

LCDGATE=UNGATE, VDDXSEL=DVDD, MODE=STEPDOWN, DMAMODE=DMADISABLE

Description

No Description

Fields

RESISTOR

Resistor strength

BUFDRV

Buffer Drive Strength

BUFBIAS

Buffer Bias Setting

MODE

Mode Setting

0 (STEPDOWN): Use step down control with VLCD less than VDDX. Use VLCD[4:0] to control VLCD level, and use SPEED to adjust VLCD drive strength.

1 (CHARGEPUMP): Use the charge pump to pump VLCD above VDDX.

VLCD

VLCD voltage level

VDDXSEL

VDDX select

0 (DVDD): Connect charge pump to digital DVDD supply

1 (AVDD): Connect charge pump to analog AVDD supply

LCDGATE

LCD Gate

0 (UNGATE): LCD BIAS voltages driven onto pins.

1 (GATE): LCD BIAS MUX tristated at the pins.

DMAMODE

DMA Mode

0 (DMADISABLE): No DMA requests are generated

1 (DMAFC): DMA request on frame counter event. This will also start a DMA transfer during EM23.

2 (DMADISPLAY): DMA request on display counter event. This will also start a DMA transfer during EM23.

Links

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